/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 13:52:30,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 13:52:30,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 13:52:30,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 13:52:30,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 13:52:30,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 13:52:30,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 13:52:30,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 13:52:30,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 13:52:30,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 13:52:30,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 13:52:30,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 13:52:30,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 13:52:30,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 13:52:30,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 13:52:30,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 13:52:30,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 13:52:30,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 13:52:30,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 13:52:30,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 13:52:30,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-15 13:52:30,441 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 13:52:30,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 13:52:30,442 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 13:52:30,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 13:52:30,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 13:52:30,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 13:52:30,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 13:52:30,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 13:52:30,443 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 13:52:30,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 13:52:30,444 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 13:52:30,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 13:52:30,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 13:52:30,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 13:52:30,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 13:52:30,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 13:52:30,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 13:52:30,445 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 13:52:30,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 13:52:30,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 13:52:30,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 13:52:30,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 13:52:30,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 13:52:30,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 13:52:30,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 13:52:30,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 13:52:30,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 13:52:30,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 13:52:30,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 13:52:30,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 13:52:30,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 13:52:30,447 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 13:52:30,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 13:52:30,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 13:52:30,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 13:52:30,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 13:52:30,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 13:52:30,647 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 13:52:30,649 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 13:52:30,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2022-03-15 13:52:30,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6d6b881a/0a8395b46c354a6fa3f7d5190eb53d28/FLAG08ef775b4 [2022-03-15 13:52:31,056 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 13:52:31,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2022-03-15 13:52:31,061 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6d6b881a/0a8395b46c354a6fa3f7d5190eb53d28/FLAG08ef775b4 [2022-03-15 13:52:31,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6d6b881a/0a8395b46c354a6fa3f7d5190eb53d28 [2022-03-15 13:52:31,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 13:52:31,076 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 13:52:31,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 13:52:31,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 13:52:31,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 13:52:31,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 01:52:31" (1/1) ... [2022-03-15 13:52:31,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d756311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:52:31, skipping insertion in model container [2022-03-15 13:52:31,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 01:52:31" (1/1) ... [2022-03-15 13:52:31,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 13:52:31,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 13:52:31,238 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c[2848,2861] [2022-03-15 13:52:31,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 13:52:31,247 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 13:52:31,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c[2848,2861] [2022-03-15 13:52:31,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 13:52:31,272 INFO L208 MainTranslator]: Completed translation [2022-03-15 13:52:31,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:52:31 WrapperNode [2022-03-15 13:52:31,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 13:52:31,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 13:52:31,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 13:52:31,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 13:52:31,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:52:31" (1/1) ... [2022-03-15 13:52:31,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:52:31" (1/1) ... [2022-03-15 13:52:31,310 INFO L137 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2022-03-15 13:52:31,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 13:52:31,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 13:52:31,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 13:52:31,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 13:52:31,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:52:31" (1/1) ... [2022-03-15 13:52:31,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:52:31" (1/1) ... [2022-03-15 13:52:31,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:52:31" (1/1) ... [2022-03-15 13:52:31,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:52:31" (1/1) ... [2022-03-15 13:52:31,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:52:31" (1/1) ... [2022-03-15 13:52:31,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:52:31" (1/1) ... [2022-03-15 13:52:31,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:52:31" (1/1) ... [2022-03-15 13:52:31,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 13:52:31,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 13:52:31,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 13:52:31,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 13:52:31,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:52:31" (1/1) ... [2022-03-15 13:52:31,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 13:52:31,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:52:31,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-15 13:52:31,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-15 13:52:31,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 13:52:31,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 13:52:31,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 13:52:31,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 13:52:31,392 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 13:52:31,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 13:52:31,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 13:52:31,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 13:52:31,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-15 13:52:31,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 13:52:31,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 13:52:31,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 13:52:31,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 13:52:31,394 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 13:52:31,453 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 13:52:31,454 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 13:52:31,683 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 13:52:31,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 13:52:31,692 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-03-15 13:52:31,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 01:52:31 BoogieIcfgContainer [2022-03-15 13:52:31,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 13:52:31,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 13:52:31,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 13:52:31,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 13:52:31,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 01:52:31" (1/3) ... [2022-03-15 13:52:31,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58451358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 01:52:31, skipping insertion in model container [2022-03-15 13:52:31,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 01:52:31" (2/3) ... [2022-03-15 13:52:31,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58451358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 01:52:31, skipping insertion in model container [2022-03-15 13:52:31,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 01:52:31" (3/3) ... [2022-03-15 13:52:31,698 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2022-03-15 13:52:31,701 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 13:52:31,701 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 13:52:31,701 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 13:52:31,702 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 13:52:31,783 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,784 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,784 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,784 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,785 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,785 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,785 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,787 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,788 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,788 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,788 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,789 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,789 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,789 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,789 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,789 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,789 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,790 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,791 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,793 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,793 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,794 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,794 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,794 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,795 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,795 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,795 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,797 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,798 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,798 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,798 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,798 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,798 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,798 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,798 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,799 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,799 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,807 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,809 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,813 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,813 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,813 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,814 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,814 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,814 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,814 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,814 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,814 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,815 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,815 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,815 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,815 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,815 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,816 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,816 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,817 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,817 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,817 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,818 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,819 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,819 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,820 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,820 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,820 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,820 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,820 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,820 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,820 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,820 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,821 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,821 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,821 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,821 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,821 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,821 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,821 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,821 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,822 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,823 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,823 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,823 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,831 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,832 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,832 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,832 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,832 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,832 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,837 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,837 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,838 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,838 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,843 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,844 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 13:52:31,853 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 13:52:31,887 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 13:52:31,892 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 13:52:31,892 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 13:52:31,909 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 228 places, 246 transitions, 508 flow [2022-03-15 13:52:32,097 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5062 states, 5061 states have (on average 2.9948626753606007) internal successors, (15157), 5061 states have internal predecessors, (15157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:32,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 5062 states, 5061 states have (on average 2.9948626753606007) internal successors, (15157), 5061 states have internal predecessors, (15157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:32,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-15 13:52:32,152 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:32,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:32,154 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:32,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:32,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1888425211, now seen corresponding path program 1 times [2022-03-15 13:52:32,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:32,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489611512] [2022-03-15 13:52:32,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:32,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:32,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:32,421 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489611512] [2022-03-15 13:52:32,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489611512] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:32,424 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:32,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 13:52:32,425 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122840169] [2022-03-15 13:52:32,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:32,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-15 13:52:32,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:32,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-15 13:52:32,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 13:52:32,480 INFO L87 Difference]: Start difference. First operand has 5062 states, 5061 states have (on average 2.9948626753606007) internal successors, (15157), 5061 states have internal predecessors, (15157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:32,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:32,558 INFO L93 Difference]: Finished difference Result 5062 states and 14867 transitions. [2022-03-15 13:52:32,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-15 13:52:32,561 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-03-15 13:52:32,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:32,606 INFO L225 Difference]: With dead ends: 5062 [2022-03-15 13:52:32,607 INFO L226 Difference]: Without dead ends: 5055 [2022-03-15 13:52:32,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-15 13:52:32,612 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:32,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 220 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:52:32,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5055 states. [2022-03-15 13:52:32,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5055 to 5055. [2022-03-15 13:52:32,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5055 states, 5054 states have (on average 2.9402453502176495) internal successors, (14860), 5054 states have internal predecessors, (14860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5055 states to 5055 states and 14860 transitions. [2022-03-15 13:52:32,846 INFO L78 Accepts]: Start accepts. Automaton has 5055 states and 14860 transitions. Word has length 139 [2022-03-15 13:52:32,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:32,847 INFO L470 AbstractCegarLoop]: Abstraction has 5055 states and 14860 transitions. [2022-03-15 13:52:32,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:32,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5055 states and 14860 transitions. [2022-03-15 13:52:32,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-03-15 13:52:32,862 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:32,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:32,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 13:52:32,863 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:32,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:32,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1099516835, now seen corresponding path program 1 times [2022-03-15 13:52:32,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:32,866 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714787013] [2022-03-15 13:52:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:32,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:32,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:32,994 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714787013] [2022-03-15 13:52:32,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714787013] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:32,994 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:32,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 13:52:32,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217839874] [2022-03-15 13:52:32,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:32,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 13:52:32,995 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:32,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 13:52:32,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:52:32,996 INFO L87 Difference]: Start difference. First operand 5055 states and 14860 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:33,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:33,064 INFO L93 Difference]: Finished difference Result 5771 states and 16742 transitions. [2022-03-15 13:52:33,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 13:52:33,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-03-15 13:52:33,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:33,091 INFO L225 Difference]: With dead ends: 5771 [2022-03-15 13:52:33,091 INFO L226 Difference]: Without dead ends: 5771 [2022-03-15 13:52:33,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:52:33,093 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 99 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:33,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 433 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:52:33,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2022-03-15 13:52:33,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5194. [2022-03-15 13:52:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5194 states, 5193 states have (on average 2.938571153475833) internal successors, (15260), 5193 states have internal predecessors, (15260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 15260 transitions. [2022-03-15 13:52:33,323 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 15260 transitions. Word has length 139 [2022-03-15 13:52:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:33,324 INFO L470 AbstractCegarLoop]: Abstraction has 5194 states and 15260 transitions. [2022-03-15 13:52:33,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:33,325 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 15260 transitions. [2022-03-15 13:52:33,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-03-15 13:52:33,382 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:33,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:33,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 13:52:33,382 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:33,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:33,383 INFO L85 PathProgramCache]: Analyzing trace with hash 689073211, now seen corresponding path program 1 times [2022-03-15 13:52:33,383 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:33,383 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32132718] [2022-03-15 13:52:33,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:33,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:33,472 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:33,472 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32132718] [2022-03-15 13:52:33,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32132718] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:33,472 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:33,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 13:52:33,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077209789] [2022-03-15 13:52:33,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:33,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 13:52:33,473 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:33,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 13:52:33,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:52:33,474 INFO L87 Difference]: Start difference. First operand 5194 states and 15260 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:33,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:33,521 INFO L93 Difference]: Finished difference Result 6050 states and 17445 transitions. [2022-03-15 13:52:33,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 13:52:33,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-03-15 13:52:33,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:33,560 INFO L225 Difference]: With dead ends: 6050 [2022-03-15 13:52:33,560 INFO L226 Difference]: Without dead ends: 6050 [2022-03-15 13:52:33,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:52:33,566 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 88 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:33,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 436 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:52:33,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2022-03-15 13:52:33,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 5340. [2022-03-15 13:52:33,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5340 states, 5339 states have (on average 2.9363176624836114) internal successors, (15677), 5339 states have internal predecessors, (15677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:33,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 15677 transitions. [2022-03-15 13:52:33,713 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 15677 transitions. Word has length 140 [2022-03-15 13:52:33,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:33,715 INFO L470 AbstractCegarLoop]: Abstraction has 5340 states and 15677 transitions. [2022-03-15 13:52:33,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:33,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 15677 transitions. [2022-03-15 13:52:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:33,727 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:33,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:33,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 13:52:33,728 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:33,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:33,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1007108905, now seen corresponding path program 1 times [2022-03-15 13:52:33,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:33,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121881500] [2022-03-15 13:52:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:33,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:34,388 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:34,388 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121881500] [2022-03-15 13:52:34,389 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121881500] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:34,389 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:34,389 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:52:34,389 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063108387] [2022-03-15 13:52:34,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:34,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:52:34,389 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:34,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:52:34,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:52:34,390 INFO L87 Difference]: Start difference. First operand 5340 states and 15677 transitions. Second operand has 21 states, 21 states have (on average 6.714285714285714) internal successors, (141), 21 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:35,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:35,589 INFO L93 Difference]: Finished difference Result 17892 states and 52122 transitions. [2022-03-15 13:52:35,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:52:35,589 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.714285714285714) internal successors, (141), 21 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:35,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:35,633 INFO L225 Difference]: With dead ends: 17892 [2022-03-15 13:52:35,634 INFO L226 Difference]: Without dead ends: 17721 [2022-03-15 13:52:35,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=402, Invalid=1578, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 13:52:35,641 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 3616 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3616 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:35,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3616 Valid, 3192 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:52:35,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17721 states. [2022-03-15 13:52:35,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17721 to 9090. [2022-03-15 13:52:35,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9090 states, 9089 states have (on average 2.942457916162394) internal successors, (26744), 9089 states have internal predecessors, (26744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:35,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9090 states to 9090 states and 26744 transitions. [2022-03-15 13:52:35,916 INFO L78 Accepts]: Start accepts. Automaton has 9090 states and 26744 transitions. Word has length 141 [2022-03-15 13:52:35,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:35,916 INFO L470 AbstractCegarLoop]: Abstraction has 9090 states and 26744 transitions. [2022-03-15 13:52:35,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.714285714285714) internal successors, (141), 21 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:35,916 INFO L276 IsEmpty]: Start isEmpty. Operand 9090 states and 26744 transitions. [2022-03-15 13:52:35,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:35,932 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:35,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:35,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 13:52:35,932 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:35,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:35,934 INFO L85 PathProgramCache]: Analyzing trace with hash -810308121, now seen corresponding path program 1 times [2022-03-15 13:52:35,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:35,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074530858] [2022-03-15 13:52:35,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:35,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:36,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:36,003 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:36,003 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074530858] [2022-03-15 13:52:36,003 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074530858] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:36,003 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:36,003 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 13:52:36,003 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300574374] [2022-03-15 13:52:36,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:36,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 13:52:36,004 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:36,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 13:52:36,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:52:36,004 INFO L87 Difference]: Start difference. First operand 9090 states and 26744 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:36,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:36,060 INFO L93 Difference]: Finished difference Result 9363 states and 26702 transitions. [2022-03-15 13:52:36,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 13:52:36,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:36,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:36,081 INFO L225 Difference]: With dead ends: 9363 [2022-03-15 13:52:36,081 INFO L226 Difference]: Without dead ends: 9363 [2022-03-15 13:52:36,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:52:36,081 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 92 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:36,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 376 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:52:36,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9363 states. [2022-03-15 13:52:36,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9363 to 9189. [2022-03-15 13:52:36,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9189 states, 9188 states have (on average 2.866238572050501) internal successors, (26335), 9188 states have internal predecessors, (26335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:36,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9189 states to 9189 states and 26335 transitions. [2022-03-15 13:52:36,303 INFO L78 Accepts]: Start accepts. Automaton has 9189 states and 26335 transitions. Word has length 141 [2022-03-15 13:52:36,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:36,304 INFO L470 AbstractCegarLoop]: Abstraction has 9189 states and 26335 transitions. [2022-03-15 13:52:36,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:36,304 INFO L276 IsEmpty]: Start isEmpty. Operand 9189 states and 26335 transitions. [2022-03-15 13:52:36,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:36,321 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:36,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:36,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 13:52:36,321 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:36,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:36,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1850227483, now seen corresponding path program 1 times [2022-03-15 13:52:36,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:36,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031472893] [2022-03-15 13:52:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:36,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:36,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:36,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031472893] [2022-03-15 13:52:36,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031472893] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:36,371 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:36,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 13:52:36,372 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365292190] [2022-03-15 13:52:36,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:36,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 13:52:36,373 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:36,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 13:52:36,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:52:36,373 INFO L87 Difference]: Start difference. First operand 9189 states and 26335 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:36,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:36,417 INFO L93 Difference]: Finished difference Result 8228 states and 23405 transitions. [2022-03-15 13:52:36,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 13:52:36,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:36,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:36,437 INFO L225 Difference]: With dead ends: 8228 [2022-03-15 13:52:36,437 INFO L226 Difference]: Without dead ends: 8228 [2022-03-15 13:52:36,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:52:36,439 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 38 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:36,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 418 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:52:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8228 states. [2022-03-15 13:52:36,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8228 to 8162. [2022-03-15 13:52:36,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8162 states, 8161 states have (on average 2.8543070702119837) internal successors, (23294), 8161 states have internal predecessors, (23294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:36,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8162 states to 8162 states and 23294 transitions. [2022-03-15 13:52:36,604 INFO L78 Accepts]: Start accepts. Automaton has 8162 states and 23294 transitions. Word has length 141 [2022-03-15 13:52:36,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:36,605 INFO L470 AbstractCegarLoop]: Abstraction has 8162 states and 23294 transitions. [2022-03-15 13:52:36,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:36,605 INFO L276 IsEmpty]: Start isEmpty. Operand 8162 states and 23294 transitions. [2022-03-15 13:52:36,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:36,620 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:36,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:36,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 13:52:36,620 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:36,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:36,621 INFO L85 PathProgramCache]: Analyzing trace with hash 627322787, now seen corresponding path program 1 times [2022-03-15 13:52:36,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:36,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37879481] [2022-03-15 13:52:36,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:36,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:36,662 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:36,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37879481] [2022-03-15 13:52:36,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37879481] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:36,662 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:36,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 13:52:36,663 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547118452] [2022-03-15 13:52:36,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:36,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 13:52:36,663 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:36,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 13:52:36,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:52:36,664 INFO L87 Difference]: Start difference. First operand 8162 states and 23294 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:36,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:36,714 INFO L93 Difference]: Finished difference Result 8443 states and 23912 transitions. [2022-03-15 13:52:36,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 13:52:36,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:36,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:36,735 INFO L225 Difference]: With dead ends: 8443 [2022-03-15 13:52:36,735 INFO L226 Difference]: Without dead ends: 8443 [2022-03-15 13:52:36,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 13:52:36,737 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 30 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:36,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 432 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:52:36,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8443 states. [2022-03-15 13:52:36,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8443 to 8261. [2022-03-15 13:52:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8261 states, 8260 states have (on average 2.846852300242131) internal successors, (23515), 8260 states have internal predecessors, (23515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:36,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8261 states to 8261 states and 23515 transitions. [2022-03-15 13:52:36,891 INFO L78 Accepts]: Start accepts. Automaton has 8261 states and 23515 transitions. Word has length 141 [2022-03-15 13:52:36,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:36,891 INFO L470 AbstractCegarLoop]: Abstraction has 8261 states and 23515 transitions. [2022-03-15 13:52:36,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:36,891 INFO L276 IsEmpty]: Start isEmpty. Operand 8261 states and 23515 transitions. [2022-03-15 13:52:36,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:36,905 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:36,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:36,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-15 13:52:36,905 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:36,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:36,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1619956611, now seen corresponding path program 1 times [2022-03-15 13:52:36,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:36,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700376836] [2022-03-15 13:52:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:36,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:36,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:37,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:37,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700376836] [2022-03-15 13:52:37,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700376836] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:37,010 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:37,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 13:52:37,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105370762] [2022-03-15 13:52:37,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:37,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 13:52:37,011 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 13:52:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 13:52:37,011 INFO L87 Difference]: Start difference. First operand 8261 states and 23515 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:37,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:37,150 INFO L93 Difference]: Finished difference Result 8550 states and 24135 transitions. [2022-03-15 13:52:37,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 13:52:37,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:37,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:37,167 INFO L225 Difference]: With dead ends: 8550 [2022-03-15 13:52:37,167 INFO L226 Difference]: Without dead ends: 8343 [2022-03-15 13:52:37,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-03-15 13:52:37,168 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 117 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:37,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 1269 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:52:37,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8343 states. [2022-03-15 13:52:37,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8343 to 8184. [2022-03-15 13:52:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8184 states, 8183 states have (on average 2.8502994011976046) internal successors, (23324), 8183 states have internal predecessors, (23324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:37,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8184 states to 8184 states and 23324 transitions. [2022-03-15 13:52:37,376 INFO L78 Accepts]: Start accepts. Automaton has 8184 states and 23324 transitions. Word has length 141 [2022-03-15 13:52:37,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:37,376 INFO L470 AbstractCegarLoop]: Abstraction has 8184 states and 23324 transitions. [2022-03-15 13:52:37,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:37,376 INFO L276 IsEmpty]: Start isEmpty. Operand 8184 states and 23324 transitions. [2022-03-15 13:52:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:37,393 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:37,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:37,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-15 13:52:37,393 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:37,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:37,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1621927651, now seen corresponding path program 2 times [2022-03-15 13:52:37,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:37,394 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127555171] [2022-03-15 13:52:37,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:37,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:37,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:37,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127555171] [2022-03-15 13:52:37,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127555171] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:37,504 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:37,504 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 13:52:37,504 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95466231] [2022-03-15 13:52:37,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:37,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 13:52:37,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:37,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 13:52:37,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 13:52:37,505 INFO L87 Difference]: Start difference. First operand 8184 states and 23324 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:37,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:37,619 INFO L93 Difference]: Finished difference Result 8366 states and 23739 transitions. [2022-03-15 13:52:37,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 13:52:37,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:37,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:37,636 INFO L225 Difference]: With dead ends: 8366 [2022-03-15 13:52:37,637 INFO L226 Difference]: Without dead ends: 8259 [2022-03-15 13:52:37,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-15 13:52:37,638 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 49 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:37,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1197 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:52:37,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8259 states. [2022-03-15 13:52:37,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8259 to 8188. [2022-03-15 13:52:37,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8188 states, 8187 states have (on average 2.8497618175155734) internal successors, (23331), 8187 states have internal predecessors, (23331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:37,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 23331 transitions. [2022-03-15 13:52:37,786 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 23331 transitions. Word has length 141 [2022-03-15 13:52:37,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:37,786 INFO L470 AbstractCegarLoop]: Abstraction has 8188 states and 23331 transitions. [2022-03-15 13:52:37,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:37,786 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 23331 transitions. [2022-03-15 13:52:37,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:37,799 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:37,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:37,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-15 13:52:37,799 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:37,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:37,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1818903025, now seen corresponding path program 3 times [2022-03-15 13:52:37,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:37,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330748625] [2022-03-15 13:52:37,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:37,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:37,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:37,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:37,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330748625] [2022-03-15 13:52:37,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330748625] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:37,891 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:37,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 13:52:37,891 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996895482] [2022-03-15 13:52:37,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:37,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 13:52:37,891 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:37,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 13:52:37,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 13:52:37,892 INFO L87 Difference]: Start difference. First operand 8188 states and 23331 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:38,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:38,022 INFO L93 Difference]: Finished difference Result 8340 states and 23672 transitions. [2022-03-15 13:52:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 13:52:38,022 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:38,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:38,038 INFO L225 Difference]: With dead ends: 8340 [2022-03-15 13:52:38,038 INFO L226 Difference]: Without dead ends: 8210 [2022-03-15 13:52:38,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-15 13:52:38,039 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 35 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:38,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1585 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:52:38,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8210 states. [2022-03-15 13:52:38,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8210 to 8162. [2022-03-15 13:52:38,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8162 states, 8161 states have (on average 2.8511211861291508) internal successors, (23268), 8161 states have internal predecessors, (23268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:38,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8162 states to 8162 states and 23268 transitions. [2022-03-15 13:52:38,180 INFO L78 Accepts]: Start accepts. Automaton has 8162 states and 23268 transitions. Word has length 141 [2022-03-15 13:52:38,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:38,180 INFO L470 AbstractCegarLoop]: Abstraction has 8162 states and 23268 transitions. [2022-03-15 13:52:38,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 8162 states and 23268 transitions. [2022-03-15 13:52:38,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:38,194 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:38,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:38,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-15 13:52:38,194 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:38,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:38,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1913029597, now seen corresponding path program 4 times [2022-03-15 13:52:38,195 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:38,195 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109848186] [2022-03-15 13:52:38,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:38,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:38,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:38,297 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:38,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109848186] [2022-03-15 13:52:38,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109848186] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:38,297 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:38,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 13:52:38,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196798281] [2022-03-15 13:52:38,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:38,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 13:52:38,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 13:52:38,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-15 13:52:38,298 INFO L87 Difference]: Start difference. First operand 8162 states and 23268 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:38,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:38,478 INFO L93 Difference]: Finished difference Result 8502 states and 24043 transitions. [2022-03-15 13:52:38,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 13:52:38,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:38,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:38,494 INFO L225 Difference]: With dead ends: 8502 [2022-03-15 13:52:38,494 INFO L226 Difference]: Without dead ends: 8382 [2022-03-15 13:52:38,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-03-15 13:52:38,496 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 124 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:38,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1057 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:52:38,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8382 states. [2022-03-15 13:52:38,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8382 to 8226. [2022-03-15 13:52:38,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8226 states, 8225 states have (on average 2.84887537993921) internal successors, (23432), 8225 states have internal predecessors, (23432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8226 states to 8226 states and 23432 transitions. [2022-03-15 13:52:38,638 INFO L78 Accepts]: Start accepts. Automaton has 8226 states and 23432 transitions. Word has length 141 [2022-03-15 13:52:38,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:38,638 INFO L470 AbstractCegarLoop]: Abstraction has 8226 states and 23432 transitions. [2022-03-15 13:52:38,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:38,638 INFO L276 IsEmpty]: Start isEmpty. Operand 8226 states and 23432 transitions. [2022-03-15 13:52:38,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:38,650 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:38,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:38,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-15 13:52:38,651 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:38,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:38,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1405816603, now seen corresponding path program 5 times [2022-03-15 13:52:38,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:38,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144155082] [2022-03-15 13:52:38,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:38,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:38,742 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:38,742 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144155082] [2022-03-15 13:52:38,742 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144155082] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:38,742 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:38,742 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 13:52:38,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877226216] [2022-03-15 13:52:38,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:38,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 13:52:38,743 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:38,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 13:52:38,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-15 13:52:38,743 INFO L87 Difference]: Start difference. First operand 8226 states and 23432 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:38,857 INFO L93 Difference]: Finished difference Result 8414 states and 23859 transitions. [2022-03-15 13:52:38,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 13:52:38,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:38,872 INFO L225 Difference]: With dead ends: 8414 [2022-03-15 13:52:38,873 INFO L226 Difference]: Without dead ends: 8307 [2022-03-15 13:52:38,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-03-15 13:52:38,874 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 59 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:38,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 1160 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:52:38,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8307 states. [2022-03-15 13:52:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8307 to 8230. [2022-03-15 13:52:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8230 states, 8229 states have (on average 2.8483412322274884) internal successors, (23439), 8229 states have internal predecessors, (23439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:38,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8230 states to 8230 states and 23439 transitions. [2022-03-15 13:52:38,999 INFO L78 Accepts]: Start accepts. Automaton has 8230 states and 23439 transitions. Word has length 141 [2022-03-15 13:52:39,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:39,000 INFO L470 AbstractCegarLoop]: Abstraction has 8230 states and 23439 transitions. [2022-03-15 13:52:39,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 8230 states and 23439 transitions. [2022-03-15 13:52:39,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:39,012 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:39,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:39,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-15 13:52:39,012 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:39,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:39,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1602791977, now seen corresponding path program 6 times [2022-03-15 13:52:39,013 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:39,013 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021858673] [2022-03-15 13:52:39,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:39,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:39,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:39,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021858673] [2022-03-15 13:52:39,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021858673] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:39,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:39,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 13:52:39,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968914038] [2022-03-15 13:52:39,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:39,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 13:52:39,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:39,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 13:52:39,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 13:52:39,109 INFO L87 Difference]: Start difference. First operand 8230 states and 23439 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:39,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:39,252 INFO L93 Difference]: Finished difference Result 8388 states and 23792 transitions. [2022-03-15 13:52:39,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 13:52:39,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:39,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:39,266 INFO L225 Difference]: With dead ends: 8388 [2022-03-15 13:52:39,266 INFO L226 Difference]: Without dead ends: 8254 [2022-03-15 13:52:39,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-15 13:52:39,267 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 48 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:39,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1178 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:52:39,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8254 states. [2022-03-15 13:52:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8254 to 8200. [2022-03-15 13:52:39,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8200 states, 8199 states have (on average 2.849737772899134) internal successors, (23365), 8199 states have internal predecessors, (23365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:39,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 23365 transitions. [2022-03-15 13:52:39,384 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 23365 transitions. Word has length 141 [2022-03-15 13:52:39,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:39,384 INFO L470 AbstractCegarLoop]: Abstraction has 8200 states and 23365 transitions. [2022-03-15 13:52:39,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:39,385 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 23365 transitions. [2022-03-15 13:52:39,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:39,396 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:39,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:39,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-15 13:52:39,396 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:39,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:39,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2098111613, now seen corresponding path program 1 times [2022-03-15 13:52:39,397 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:39,397 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137643323] [2022-03-15 13:52:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:39,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:39,557 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:39,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137643323] [2022-03-15 13:52:39,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137643323] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:39,557 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:39,557 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 13:52:39,557 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524369476] [2022-03-15 13:52:39,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:39,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 13:52:39,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:39,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 13:52:39,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-15 13:52:39,558 INFO L87 Difference]: Start difference. First operand 8200 states and 23365 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:39,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:39,695 INFO L93 Difference]: Finished difference Result 8460 states and 23922 transitions. [2022-03-15 13:52:39,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 13:52:39,696 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:39,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:39,710 INFO L225 Difference]: With dead ends: 8460 [2022-03-15 13:52:39,710 INFO L226 Difference]: Without dead ends: 8340 [2022-03-15 13:52:39,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-03-15 13:52:39,711 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 112 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:39,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1044 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:52:39,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8340 states. [2022-03-15 13:52:39,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8340 to 8204. [2022-03-15 13:52:39,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8204 states, 8203 states have (on average 2.8468852858710227) internal successors, (23353), 8203 states have internal predecessors, (23353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:39,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 23353 transitions. [2022-03-15 13:52:39,832 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 23353 transitions. Word has length 141 [2022-03-15 13:52:39,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:39,832 INFO L470 AbstractCegarLoop]: Abstraction has 8204 states and 23353 transitions. [2022-03-15 13:52:39,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:39,833 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 23353 transitions. [2022-03-15 13:52:39,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:39,844 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:39,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:39,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-15 13:52:39,845 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:39,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:39,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1105477789, now seen corresponding path program 1 times [2022-03-15 13:52:39,845 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:39,845 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106556411] [2022-03-15 13:52:39,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:39,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:39,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:39,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:39,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106556411] [2022-03-15 13:52:39,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106556411] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:39,871 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:39,871 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 13:52:39,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071121911] [2022-03-15 13:52:39,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:39,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 13:52:39,872 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:39,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 13:52:39,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 13:52:39,872 INFO L87 Difference]: Start difference. First operand 8204 states and 23353 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:39,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:39,920 INFO L93 Difference]: Finished difference Result 8223 states and 23294 transitions. [2022-03-15 13:52:39,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 13:52:39,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:39,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:39,934 INFO L225 Difference]: With dead ends: 8223 [2022-03-15 13:52:39,934 INFO L226 Difference]: Without dead ends: 8142 [2022-03-15 13:52:39,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 13:52:39,935 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 55 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:39,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 636 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:52:39,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8142 states. [2022-03-15 13:52:40,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8142 to 8016. [2022-03-15 13:52:40,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8016 states, 8015 states have (on average 2.8510293200249532) internal successors, (22851), 8015 states have internal predecessors, (22851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 22851 transitions. [2022-03-15 13:52:40,054 INFO L78 Accepts]: Start accepts. Automaton has 8016 states and 22851 transitions. Word has length 141 [2022-03-15 13:52:40,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:40,054 INFO L470 AbstractCegarLoop]: Abstraction has 8016 states and 22851 transitions. [2022-03-15 13:52:40,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:40,055 INFO L276 IsEmpty]: Start isEmpty. Operand 8016 states and 22851 transitions. [2022-03-15 13:52:40,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:40,067 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:40,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:40,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-03-15 13:52:40,067 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:40,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:40,067 INFO L85 PathProgramCache]: Analyzing trace with hash 54678179, now seen corresponding path program 2 times [2022-03-15 13:52:40,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:40,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117500008] [2022-03-15 13:52:40,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:40,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:40,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:40,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:40,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117500008] [2022-03-15 13:52:40,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117500008] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:40,148 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:40,148 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 13:52:40,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353239873] [2022-03-15 13:52:40,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:40,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 13:52:40,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:40,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 13:52:40,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 13:52:40,149 INFO L87 Difference]: Start difference. First operand 8016 states and 22851 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:40,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:40,271 INFO L93 Difference]: Finished difference Result 8144 states and 23136 transitions. [2022-03-15 13:52:40,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 13:52:40,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:40,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:40,285 INFO L225 Difference]: With dead ends: 8144 [2022-03-15 13:52:40,285 INFO L226 Difference]: Without dead ends: 8043 [2022-03-15 13:52:40,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-15 13:52:40,286 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 49 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:40,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1180 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:52:40,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8043 states. [2022-03-15 13:52:40,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8043 to 8020. [2022-03-15 13:52:40,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8020 states, 8019 states have (on average 2.850480109739369) internal successors, (22858), 8019 states have internal predecessors, (22858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8020 states to 8020 states and 22858 transitions. [2022-03-15 13:52:40,397 INFO L78 Accepts]: Start accepts. Automaton has 8020 states and 22858 transitions. Word has length 141 [2022-03-15 13:52:40,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:40,397 INFO L470 AbstractCegarLoop]: Abstraction has 8020 states and 22858 transitions. [2022-03-15 13:52:40,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:40,397 INFO L276 IsEmpty]: Start isEmpty. Operand 8020 states and 22858 transitions. [2022-03-15 13:52:40,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:40,408 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:40,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:40,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-03-15 13:52:40,409 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:40,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:40,409 INFO L85 PathProgramCache]: Analyzing trace with hash 251653553, now seen corresponding path program 3 times [2022-03-15 13:52:40,409 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:40,409 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500190481] [2022-03-15 13:52:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:40,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:40,540 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:40,540 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500190481] [2022-03-15 13:52:40,540 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500190481] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:40,540 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:40,540 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 13:52:40,540 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336395752] [2022-03-15 13:52:40,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:40,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 13:52:40,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:40,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 13:52:40,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 13:52:40,541 INFO L87 Difference]: Start difference. First operand 8020 states and 22858 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:40,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:40,670 INFO L93 Difference]: Finished difference Result 8118 states and 23069 transitions. [2022-03-15 13:52:40,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 13:52:40,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:40,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:40,685 INFO L225 Difference]: With dead ends: 8118 [2022-03-15 13:52:40,685 INFO L226 Difference]: Without dead ends: 7994 [2022-03-15 13:52:40,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-15 13:52:40,688 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 39 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:40,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 1153 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:52:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7994 states. [2022-03-15 13:52:40,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7994 to 7994. [2022-03-15 13:52:40,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7994 states, 7993 states have (on average 2.851870386588265) internal successors, (22795), 7993 states have internal predecessors, (22795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:40,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7994 states to 7994 states and 22795 transitions. [2022-03-15 13:52:40,817 INFO L78 Accepts]: Start accepts. Automaton has 7994 states and 22795 transitions. Word has length 141 [2022-03-15 13:52:40,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:40,818 INFO L470 AbstractCegarLoop]: Abstraction has 7994 states and 22795 transitions. [2022-03-15 13:52:40,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:40,818 INFO L276 IsEmpty]: Start isEmpty. Operand 7994 states and 22795 transitions. [2022-03-15 13:52:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:40,829 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:40,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:40,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-03-15 13:52:40,830 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:40,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:40,830 INFO L85 PathProgramCache]: Analyzing trace with hash 215087779, now seen corresponding path program 4 times [2022-03-15 13:52:40,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:40,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941182422] [2022-03-15 13:52:40,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:40,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:40,917 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:40,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941182422] [2022-03-15 13:52:40,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941182422] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:40,917 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:40,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 13:52:40,917 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89854517] [2022-03-15 13:52:40,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:40,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 13:52:40,917 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:40,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 13:52:40,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 13:52:40,918 INFO L87 Difference]: Start difference. First operand 7994 states and 22795 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:41,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:41,079 INFO L93 Difference]: Finished difference Result 8308 states and 23493 transitions. [2022-03-15 13:52:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 13:52:41,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:41,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:41,093 INFO L225 Difference]: With dead ends: 8308 [2022-03-15 13:52:41,093 INFO L226 Difference]: Without dead ends: 8146 [2022-03-15 13:52:41,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-03-15 13:52:41,094 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 109 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:41,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1593 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:52:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8146 states. [2022-03-15 13:52:41,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8146 to 8010. [2022-03-15 13:52:41,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8010 states, 8009 states have (on average 2.849669122237483) internal successors, (22823), 8009 states have internal predecessors, (22823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:41,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8010 states to 8010 states and 22823 transitions. [2022-03-15 13:52:41,227 INFO L78 Accepts]: Start accepts. Automaton has 8010 states and 22823 transitions. Word has length 141 [2022-03-15 13:52:41,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:41,227 INFO L470 AbstractCegarLoop]: Abstraction has 8010 states and 22823 transitions. [2022-03-15 13:52:41,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:41,227 INFO L276 IsEmpty]: Start isEmpty. Operand 8010 states and 22823 transitions. [2022-03-15 13:52:41,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:41,239 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:41,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:41,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-03-15 13:52:41,240 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:41,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:41,240 INFO L85 PathProgramCache]: Analyzing trace with hash -934606403, now seen corresponding path program 5 times [2022-03-15 13:52:41,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:41,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421821023] [2022-03-15 13:52:41,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:41,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:41,328 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:41,328 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421821023] [2022-03-15 13:52:41,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421821023] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:41,328 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:41,328 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 13:52:41,328 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406755024] [2022-03-15 13:52:41,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:41,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 13:52:41,329 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 13:52:41,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 13:52:41,330 INFO L87 Difference]: Start difference. First operand 8010 states and 22823 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:41,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:41,458 INFO L93 Difference]: Finished difference Result 8138 states and 23108 transitions. [2022-03-15 13:52:41,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 13:52:41,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:41,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:41,475 INFO L225 Difference]: With dead ends: 8138 [2022-03-15 13:52:41,475 INFO L226 Difference]: Without dead ends: 8037 [2022-03-15 13:52:41,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-15 13:52:41,477 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 52 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:41,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1132 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:52:41,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8037 states. [2022-03-15 13:52:41,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8037 to 8014. [2022-03-15 13:52:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8014 states, 8013 states have (on average 2.8491201797079744) internal successors, (22830), 8013 states have internal predecessors, (22830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8014 states to 8014 states and 22830 transitions. [2022-03-15 13:52:41,616 INFO L78 Accepts]: Start accepts. Automaton has 8014 states and 22830 transitions. Word has length 141 [2022-03-15 13:52:41,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:41,618 INFO L470 AbstractCegarLoop]: Abstraction has 8014 states and 22830 transitions. [2022-03-15 13:52:41,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand 8014 states and 22830 transitions. [2022-03-15 13:52:41,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:41,630 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:41,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:41,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-03-15 13:52:41,631 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:41,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:41,631 INFO L85 PathProgramCache]: Analyzing trace with hash -737631029, now seen corresponding path program 6 times [2022-03-15 13:52:41,631 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:41,631 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954080444] [2022-03-15 13:52:41,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:41,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:41,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:41,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954080444] [2022-03-15 13:52:41,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954080444] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:41,723 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:41,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 13:52:41,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115411584] [2022-03-15 13:52:41,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:41,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 13:52:41,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:41,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 13:52:41,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 13:52:41,724 INFO L87 Difference]: Start difference. First operand 8014 states and 22830 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:41,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:41,829 INFO L93 Difference]: Finished difference Result 8112 states and 23041 transitions. [2022-03-15 13:52:41,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 13:52:41,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:41,844 INFO L225 Difference]: With dead ends: 8112 [2022-03-15 13:52:41,844 INFO L226 Difference]: Without dead ends: 7960 [2022-03-15 13:52:41,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-15 13:52:41,846 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 47 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:41,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 930 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:52:41,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7960 states. [2022-03-15 13:52:41,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7960 to 7960. [2022-03-15 13:52:41,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7960 states, 7959 states have (on average 2.851865812287976) internal successors, (22698), 7959 states have internal predecessors, (22698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7960 states to 7960 states and 22698 transitions. [2022-03-15 13:52:41,986 INFO L78 Accepts]: Start accepts. Automaton has 7960 states and 22698 transitions. Word has length 141 [2022-03-15 13:52:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:41,987 INFO L470 AbstractCegarLoop]: Abstraction has 7960 states and 22698 transitions. [2022-03-15 13:52:41,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 7960 states and 22698 transitions. [2022-03-15 13:52:41,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-15 13:52:41,999 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:41,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:42,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-03-15 13:52:42,000 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:42,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:42,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1753409837, now seen corresponding path program 2 times [2022-03-15 13:52:42,001 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:42,001 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249552692] [2022-03-15 13:52:42,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:42,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:42,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:42,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249552692] [2022-03-15 13:52:42,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249552692] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:42,030 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:42,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 13:52:42,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056303246] [2022-03-15 13:52:42,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:42,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 13:52:42,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:42,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 13:52:42,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 13:52:42,032 INFO L87 Difference]: Start difference. First operand 7960 states and 22698 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:42,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:42,073 INFO L93 Difference]: Finished difference Result 7843 states and 22383 transitions. [2022-03-15 13:52:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 13:52:42,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-03-15 13:52:42,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:42,087 INFO L225 Difference]: With dead ends: 7843 [2022-03-15 13:52:42,087 INFO L226 Difference]: Without dead ends: 7745 [2022-03-15 13:52:42,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 13:52:42,088 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 16 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:42,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 423 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:52:42,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7745 states. [2022-03-15 13:52:42,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7745 to 7745. [2022-03-15 13:52:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7745 states, 7744 states have (on average 2.8574380165289255) internal successors, (22128), 7744 states have internal predecessors, (22128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:42,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 22128 transitions. [2022-03-15 13:52:42,219 INFO L78 Accepts]: Start accepts. Automaton has 7745 states and 22128 transitions. Word has length 141 [2022-03-15 13:52:42,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:42,219 INFO L470 AbstractCegarLoop]: Abstraction has 7745 states and 22128 transitions. [2022-03-15 13:52:42,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:42,220 INFO L276 IsEmpty]: Start isEmpty. Operand 7745 states and 22128 transitions. [2022-03-15 13:52:42,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 13:52:42,231 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:42,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:42,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-03-15 13:52:42,232 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:42,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:42,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1986433718, now seen corresponding path program 1 times [2022-03-15 13:52:42,232 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:42,232 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953627767] [2022-03-15 13:52:42,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:42,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:42,399 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:42,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953627767] [2022-03-15 13:52:42,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953627767] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:52:42,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788979790] [2022-03-15 13:52:42,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:42,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:52:42,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:52:42,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:52:42,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 13:52:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:42,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 13:52:42,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:52:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:43,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:52:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:43,451 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788979790] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 13:52:43,451 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 13:52:43,451 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2022-03-15 13:52:43,451 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182609032] [2022-03-15 13:52:43,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:43,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 13:52:43,452 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:43,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 13:52:43,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-03-15 13:52:43,452 INFO L87 Difference]: Start difference. First operand 7745 states and 22128 transitions. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:43,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:43,927 INFO L93 Difference]: Finished difference Result 13005 states and 36572 transitions. [2022-03-15 13:52:43,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 13:52:43,927 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 13:52:43,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:43,955 INFO L225 Difference]: With dead ends: 13005 [2022-03-15 13:52:43,955 INFO L226 Difference]: Without dead ends: 12924 [2022-03-15 13:52:43,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 279 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=362, Invalid=1530, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 13:52:43,956 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 878 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:43,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 2533 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:52:43,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12924 states. [2022-03-15 13:52:44,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12924 to 9243. [2022-03-15 13:52:44,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9243 states, 9242 states have (on average 2.8779484959965376) internal successors, (26598), 9242 states have internal predecessors, (26598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:44,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9243 states to 9243 states and 26598 transitions. [2022-03-15 13:52:44,125 INFO L78 Accepts]: Start accepts. Automaton has 9243 states and 26598 transitions. Word has length 148 [2022-03-15 13:52:44,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:44,125 INFO L470 AbstractCegarLoop]: Abstraction has 9243 states and 26598 transitions. [2022-03-15 13:52:44,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:44,126 INFO L276 IsEmpty]: Start isEmpty. Operand 9243 states and 26598 transitions. [2022-03-15 13:52:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 13:52:44,139 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:44,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:44,158 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-15 13:52:44,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-15 13:52:44,356 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:44,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:44,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1487913134, now seen corresponding path program 2 times [2022-03-15 13:52:44,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:44,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830056723] [2022-03-15 13:52:44,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:44,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:44,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:44,500 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:44,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830056723] [2022-03-15 13:52:44,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830056723] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:52:44,500 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548675657] [2022-03-15 13:52:44,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 13:52:44,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:52:44,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:52:44,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:52:44,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 13:52:44,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 13:52:44,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:52:44,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 13:52:44,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:52:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:52:45,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 13:52:45,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548675657] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:45,185 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 13:52:45,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [15] total 28 [2022-03-15 13:52:45,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72374441] [2022-03-15 13:52:45,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:45,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 13:52:45,186 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:45,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 13:52:45,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-03-15 13:52:45,187 INFO L87 Difference]: Start difference. First operand 9243 states and 26598 transitions. Second operand has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 18 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:46,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:46,077 INFO L93 Difference]: Finished difference Result 10514 states and 29630 transitions. [2022-03-15 13:52:46,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 13:52:46,077 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 18 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 13:52:46,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:46,096 INFO L225 Difference]: With dead ends: 10514 [2022-03-15 13:52:46,096 INFO L226 Difference]: Without dead ends: 10411 [2022-03-15 13:52:46,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=373, Invalid=1883, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 13:52:46,099 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 995 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 2430 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:46,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 2430 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:52:46,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10411 states. [2022-03-15 13:52:46,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10411 to 7793. [2022-03-15 13:52:46,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7793 states, 7792 states have (on average 2.8488193018480494) internal successors, (22198), 7792 states have internal predecessors, (22198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:46,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7793 states to 7793 states and 22198 transitions. [2022-03-15 13:52:46,233 INFO L78 Accepts]: Start accepts. Automaton has 7793 states and 22198 transitions. Word has length 148 [2022-03-15 13:52:46,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:46,234 INFO L470 AbstractCegarLoop]: Abstraction has 7793 states and 22198 transitions. [2022-03-15 13:52:46,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.222222222222221) internal successors, (148), 18 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:46,234 INFO L276 IsEmpty]: Start isEmpty. Operand 7793 states and 22198 transitions. [2022-03-15 13:52:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 13:52:46,245 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:46,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:46,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 13:52:46,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-15 13:52:46,460 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:46,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:46,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2133376293, now seen corresponding path program 1 times [2022-03-15 13:52:46,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:46,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103293119] [2022-03-15 13:52:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:46,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:46,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:46,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:46,609 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:46,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103293119] [2022-03-15 13:52:46,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103293119] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:52:46,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553134014] [2022-03-15 13:52:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:46,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:52:46,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:52:46,611 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:52:46,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 13:52:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:46,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 13:52:46,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:52:47,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:47,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:52:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:47,616 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553134014] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 13:52:47,616 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 13:52:47,616 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2022-03-15 13:52:47,616 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157508212] [2022-03-15 13:52:47,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:47,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 13:52:47,617 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:47,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 13:52:47,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-03-15 13:52:47,617 INFO L87 Difference]: Start difference. First operand 7793 states and 22198 transitions. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:48,018 INFO L93 Difference]: Finished difference Result 13053 states and 36642 transitions. [2022-03-15 13:52:48,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 13:52:48,018 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 13:52:48,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:48,042 INFO L225 Difference]: With dead ends: 13053 [2022-03-15 13:52:48,043 INFO L226 Difference]: Without dead ends: 12966 [2022-03-15 13:52:48,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 279 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=334, Invalid=1388, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:52:48,044 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 964 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 2858 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:48,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [964 Valid, 2858 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:52:48,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12966 states. [2022-03-15 13:52:48,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12966 to 10881. [2022-03-15 13:52:48,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10881 states, 10880 states have (on average 2.8889705882352943) internal successors, (31432), 10880 states have internal predecessors, (31432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:48,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10881 states to 10881 states and 31432 transitions. [2022-03-15 13:52:48,245 INFO L78 Accepts]: Start accepts. Automaton has 10881 states and 31432 transitions. Word has length 148 [2022-03-15 13:52:48,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:48,245 INFO L470 AbstractCegarLoop]: Abstraction has 10881 states and 31432 transitions. [2022-03-15 13:52:48,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:48,245 INFO L276 IsEmpty]: Start isEmpty. Operand 10881 states and 31432 transitions. [2022-03-15 13:52:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-15 13:52:48,326 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:48,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:48,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 13:52:48,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:52:48,545 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:48,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:48,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1663070419, now seen corresponding path program 2 times [2022-03-15 13:52:48,546 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:48,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021513393] [2022-03-15 13:52:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:48,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:48,705 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:48,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021513393] [2022-03-15 13:52:48,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021513393] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:52:48,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371234229] [2022-03-15 13:52:48,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 13:52:48,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:52:48,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:52:48,724 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:52:48,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 13:52:48,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 13:52:48,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:52:48,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 13:52:48,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:52:49,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:52:49,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 13:52:49,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371234229] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:49,295 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 13:52:49,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 27 [2022-03-15 13:52:49,295 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947368182] [2022-03-15 13:52:49,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:49,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 13:52:49,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:49,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 13:52:49,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-03-15 13:52:49,296 INFO L87 Difference]: Start difference. First operand 10881 states and 31432 transitions. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:49,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:49,762 INFO L93 Difference]: Finished difference Result 11334 states and 32482 transitions. [2022-03-15 13:52:49,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 13:52:49,763 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-03-15 13:52:49,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:49,784 INFO L225 Difference]: With dead ends: 11334 [2022-03-15 13:52:49,784 INFO L226 Difference]: Without dead ends: 11231 [2022-03-15 13:52:49,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=1474, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:52:49,789 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 426 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:49,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1533 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:52:49,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11231 states. [2022-03-15 13:52:49,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11231 to 7794. [2022-03-15 13:52:49,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7794 states, 7793 states have (on average 2.847683818811754) internal successors, (22192), 7793 states have internal predecessors, (22192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7794 states to 7794 states and 22192 transitions. [2022-03-15 13:52:49,934 INFO L78 Accepts]: Start accepts. Automaton has 7794 states and 22192 transitions. Word has length 148 [2022-03-15 13:52:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:49,934 INFO L470 AbstractCegarLoop]: Abstraction has 7794 states and 22192 transitions. [2022-03-15 13:52:49,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:49,934 INFO L276 IsEmpty]: Start isEmpty. Operand 7794 states and 22192 transitions. [2022-03-15 13:52:49,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-03-15 13:52:49,945 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:49,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:49,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 13:52:50,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:52:50,163 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:50,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:50,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2060043732, now seen corresponding path program 1 times [2022-03-15 13:52:50,163 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:50,163 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602577442] [2022-03-15 13:52:50,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:50,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:50,214 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:50,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602577442] [2022-03-15 13:52:50,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602577442] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:50,214 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:50,214 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 13:52:50,214 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252552593] [2022-03-15 13:52:50,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:50,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 13:52:50,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:50,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 13:52:50,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-15 13:52:50,216 INFO L87 Difference]: Start difference. First operand 7794 states and 22192 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:50,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:50,328 INFO L93 Difference]: Finished difference Result 9154 states and 25619 transitions. [2022-03-15 13:52:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 13:52:50,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-03-15 13:52:50,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:50,343 INFO L225 Difference]: With dead ends: 9154 [2022-03-15 13:52:50,343 INFO L226 Difference]: Without dead ends: 9032 [2022-03-15 13:52:50,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-03-15 13:52:50,344 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 220 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:50,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 1059 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:52:50,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9032 states. [2022-03-15 13:52:50,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9032 to 8431. [2022-03-15 13:52:50,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8431 states, 8430 states have (on average 2.82502965599051) internal successors, (23815), 8430 states have internal predecessors, (23815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8431 states to 8431 states and 23815 transitions. [2022-03-15 13:52:50,470 INFO L78 Accepts]: Start accepts. Automaton has 8431 states and 23815 transitions. Word has length 154 [2022-03-15 13:52:50,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:50,470 INFO L470 AbstractCegarLoop]: Abstraction has 8431 states and 23815 transitions. [2022-03-15 13:52:50,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:50,471 INFO L276 IsEmpty]: Start isEmpty. Operand 8431 states and 23815 transitions. [2022-03-15 13:52:50,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-03-15 13:52:50,482 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:50,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:50,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-03-15 13:52:50,483 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:50,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:50,483 INFO L85 PathProgramCache]: Analyzing trace with hash -174767826, now seen corresponding path program 1 times [2022-03-15 13:52:50,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:50,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964085056] [2022-03-15 13:52:50,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:50,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:50,530 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:50,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964085056] [2022-03-15 13:52:50,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964085056] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:50,531 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:50,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 13:52:50,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543512595] [2022-03-15 13:52:50,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:50,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 13:52:50,531 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:50,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 13:52:50,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-15 13:52:50,532 INFO L87 Difference]: Start difference. First operand 8431 states and 23815 transitions. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:50,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:50,643 INFO L93 Difference]: Finished difference Result 7976 states and 22592 transitions. [2022-03-15 13:52:50,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 13:52:50,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-03-15 13:52:50,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:50,657 INFO L225 Difference]: With dead ends: 7976 [2022-03-15 13:52:50,658 INFO L226 Difference]: Without dead ends: 7766 [2022-03-15 13:52:50,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-03-15 13:52:50,659 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 132 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:50,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 1058 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:52:50,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7766 states. [2022-03-15 13:52:50,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7766 to 7761. [2022-03-15 13:52:50,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7761 states, 7760 states have (on average 2.855283505154639) internal successors, (22157), 7760 states have internal predecessors, (22157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:50,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7761 states to 7761 states and 22157 transitions. [2022-03-15 13:52:50,776 INFO L78 Accepts]: Start accepts. Automaton has 7761 states and 22157 transitions. Word has length 154 [2022-03-15 13:52:50,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:50,776 INFO L470 AbstractCegarLoop]: Abstraction has 7761 states and 22157 transitions. [2022-03-15 13:52:50,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:50,776 INFO L276 IsEmpty]: Start isEmpty. Operand 7761 states and 22157 transitions. [2022-03-15 13:52:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-03-15 13:52:50,787 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:50,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:50,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-03-15 13:52:50,788 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:50,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:50,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2131040572, now seen corresponding path program 1 times [2022-03-15 13:52:50,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:50,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145846782] [2022-03-15 13:52:50,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:50,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:50,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:50,907 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:50,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145846782] [2022-03-15 13:52:50,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145846782] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:52:50,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147517137] [2022-03-15 13:52:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:50,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:52:50,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:52:50,908 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:52:50,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 13:52:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:51,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 13:52:51,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:52:51,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:51,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:52:51,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:52:51,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147517137] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 13:52:51,939 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 13:52:51,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-03-15 13:52:51,940 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510029651] [2022-03-15 13:52:51,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:51,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 13:52:51,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:51,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 13:52:51,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-03-15 13:52:51,940 INFO L87 Difference]: Start difference. First operand 7761 states and 22157 transitions. Second operand has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:52,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:52,190 INFO L93 Difference]: Finished difference Result 9967 states and 27609 transitions. [2022-03-15 13:52:52,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 13:52:52,191 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-03-15 13:52:52,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:52,207 INFO L225 Difference]: With dead ends: 9967 [2022-03-15 13:52:52,207 INFO L226 Difference]: Without dead ends: 9967 [2022-03-15 13:52:52,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 297 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=724, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:52:52,208 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1131 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:52,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 1024 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:52:52,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9967 states. [2022-03-15 13:52:52,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9967 to 7947. [2022-03-15 13:52:52,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7947 states, 7946 states have (on average 2.8492323181474957) internal successors, (22640), 7946 states have internal predecessors, (22640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:52,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7947 states to 7947 states and 22640 transitions. [2022-03-15 13:52:52,343 INFO L78 Accepts]: Start accepts. Automaton has 7947 states and 22640 transitions. Word has length 155 [2022-03-15 13:52:52,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:52,344 INFO L470 AbstractCegarLoop]: Abstraction has 7947 states and 22640 transitions. [2022-03-15 13:52:52,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:52,344 INFO L276 IsEmpty]: Start isEmpty. Operand 7947 states and 22640 transitions. [2022-03-15 13:52:52,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:52:52,389 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:52,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:52,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 13:52:52,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-15 13:52:52,590 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:52,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:52,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1234806942, now seen corresponding path program 1 times [2022-03-15 13:52:52,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:52,591 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951371451] [2022-03-15 13:52:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:52,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:52:52,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:52,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951371451] [2022-03-15 13:52:52,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951371451] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:52,642 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:52,642 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 13:52:52,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737557924] [2022-03-15 13:52:52,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:52,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 13:52:52,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:52,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 13:52:52,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-15 13:52:52,643 INFO L87 Difference]: Start difference. First operand 7947 states and 22640 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:52,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:52,746 INFO L93 Difference]: Finished difference Result 5780 states and 15833 transitions. [2022-03-15 13:52:52,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 13:52:52,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 13:52:52,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:52,754 INFO L225 Difference]: With dead ends: 5780 [2022-03-15 13:52:52,754 INFO L226 Difference]: Without dead ends: 5658 [2022-03-15 13:52:52,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-15 13:52:52,755 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 625 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:52,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 795 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:52:52,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2022-03-15 13:52:52,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 5257. [2022-03-15 13:52:52,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5256 states have (on average 2.776826484018265) internal successors, (14595), 5256 states have internal predecessors, (14595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:52,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 14595 transitions. [2022-03-15 13:52:52,824 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 14595 transitions. Word has length 161 [2022-03-15 13:52:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:52,824 INFO L470 AbstractCegarLoop]: Abstraction has 5257 states and 14595 transitions. [2022-03-15 13:52:52,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 14595 transitions. [2022-03-15 13:52:52,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-15 13:52:52,831 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:52,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:52,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-03-15 13:52:52,832 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:52,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:52,832 INFO L85 PathProgramCache]: Analyzing trace with hash 825348796, now seen corresponding path program 1 times [2022-03-15 13:52:52,832 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:52,832 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751618976] [2022-03-15 13:52:52,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:52,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:52:52,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:52,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751618976] [2022-03-15 13:52:52,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751618976] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:52,877 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:52,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-15 13:52:52,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846322355] [2022-03-15 13:52:52,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:52,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 13:52:52,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:52,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 13:52:52,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-15 13:52:52,878 INFO L87 Difference]: Start difference. First operand 5257 states and 14595 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:52,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:52,968 INFO L93 Difference]: Finished difference Result 4602 states and 12806 transitions. [2022-03-15 13:52:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 13:52:52,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2022-03-15 13:52:52,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:52,975 INFO L225 Difference]: With dead ends: 4602 [2022-03-15 13:52:52,975 INFO L226 Difference]: Without dead ends: 4425 [2022-03-15 13:52:52,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-03-15 13:52:52,976 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 369 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:52,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 832 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 13:52:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2022-03-15 13:52:53,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 4420. [2022-03-15 13:52:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4420 states, 4419 states have (on average 2.807196198234895) internal successors, (12405), 4419 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 12405 transitions. [2022-03-15 13:52:53,035 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 12405 transitions. Word has length 161 [2022-03-15 13:52:53,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:53,036 INFO L470 AbstractCegarLoop]: Abstraction has 4420 states and 12405 transitions. [2022-03-15 13:52:53,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:53,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 12405 transitions. [2022-03-15 13:52:53,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-15 13:52:53,041 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:53,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:53,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-03-15 13:52:53,042 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:53,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:53,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2054720919, now seen corresponding path program 1 times [2022-03-15 13:52:53,042 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:53,042 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500585706] [2022-03-15 13:52:53,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:53,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:53,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:52:53,176 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:53,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500585706] [2022-03-15 13:52:53,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500585706] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:52:53,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825301573] [2022-03-15 13:52:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:53,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:52:53,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:52:53,177 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:52:53,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 13:52:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:53,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 13:52:53,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:52:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:52:53,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:52:54,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:52:54,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825301573] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 13:52:54,187 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 13:52:54,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-03-15 13:52:54,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573220100] [2022-03-15 13:52:54,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:54,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 13:52:54,188 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:54,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 13:52:54,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-03-15 13:52:54,188 INFO L87 Difference]: Start difference. First operand 4420 states and 12405 transitions. Second operand has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:54,358 INFO L93 Difference]: Finished difference Result 5196 states and 14341 transitions. [2022-03-15 13:52:54,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 13:52:54,359 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2022-03-15 13:52:54,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:54,368 INFO L225 Difference]: With dead ends: 5196 [2022-03-15 13:52:54,368 INFO L226 Difference]: Without dead ends: 5196 [2022-03-15 13:52:54,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 315 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=678, Unknown=0, NotChecked=0, Total=930 [2022-03-15 13:52:54,369 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 708 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:54,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 658 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 13:52:54,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2022-03-15 13:52:54,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 4550. [2022-03-15 13:52:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4550 states, 4549 states have (on average 2.807210375906793) internal successors, (12770), 4549 states have internal predecessors, (12770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4550 states to 4550 states and 12770 transitions. [2022-03-15 13:52:54,442 INFO L78 Accepts]: Start accepts. Automaton has 4550 states and 12770 transitions. Word has length 164 [2022-03-15 13:52:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:54,442 INFO L470 AbstractCegarLoop]: Abstraction has 4550 states and 12770 transitions. [2022-03-15 13:52:54,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 11 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4550 states and 12770 transitions. [2022-03-15 13:52:54,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-03-15 13:52:54,448 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:54,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:54,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 13:52:54,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:52:54,666 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:54,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:54,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1659523190, now seen corresponding path program 1 times [2022-03-15 13:52:54,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:54,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288649005] [2022-03-15 13:52:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:54,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:55,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:52:55,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:55,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288649005] [2022-03-15 13:52:55,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288649005] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:52:55,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826354122] [2022-03-15 13:52:55,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:55,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:52:55,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:52:55,073 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:52:55,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 13:52:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:55,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-15 13:52:55,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:52:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:52:56,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:52:57,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:52:57,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826354122] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:52:57,188 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:52:57,188 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 20] total 46 [2022-03-15 13:52:57,188 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447240710] [2022-03-15 13:52:57,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:52:57,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-15 13:52:57,188 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:57,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-15 13:52:57,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1784, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 13:52:57,190 INFO L87 Difference]: Start difference. First operand 4550 states and 12770 transitions. Second operand has 46 states, 46 states have (on average 7.782608695652174) internal successors, (358), 46 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:58,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:52:58,839 INFO L93 Difference]: Finished difference Result 18134 states and 50616 transitions. [2022-03-15 13:52:58,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 13:52:58,839 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 7.782608695652174) internal successors, (358), 46 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2022-03-15 13:52:58,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:52:58,875 INFO L225 Difference]: With dead ends: 18134 [2022-03-15 13:52:58,875 INFO L226 Difference]: Without dead ends: 17924 [2022-03-15 13:52:58,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 319 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1307 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1157, Invalid=4849, Unknown=0, NotChecked=0, Total=6006 [2022-03-15 13:52:58,876 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 2375 mSDsluCounter, 7334 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 7423 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:52:58,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2375 Valid, 7423 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 13:52:58,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17924 states. [2022-03-15 13:52:59,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17924 to 8265. [2022-03-15 13:52:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8265 states, 8264 states have (on average 2.8457163601161666) internal successors, (23517), 8264 states have internal predecessors, (23517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8265 states to 8265 states and 23517 transitions. [2022-03-15 13:52:59,073 INFO L78 Accepts]: Start accepts. Automaton has 8265 states and 23517 transitions. Word has length 173 [2022-03-15 13:52:59,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:52:59,073 INFO L470 AbstractCegarLoop]: Abstraction has 8265 states and 23517 transitions. [2022-03-15 13:52:59,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 7.782608695652174) internal successors, (358), 46 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:52:59,074 INFO L276 IsEmpty]: Start isEmpty. Operand 8265 states and 23517 transitions. [2022-03-15 13:52:59,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:52:59,086 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:52:59,086 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:52:59,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-15 13:52:59,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:52:59,307 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:52:59,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:52:59,307 INFO L85 PathProgramCache]: Analyzing trace with hash -130323262, now seen corresponding path program 1 times [2022-03-15 13:52:59,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:52:59,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741837649] [2022-03-15 13:52:59,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:52:59,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:52:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:52:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:52:59,635 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:52:59,635 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741837649] [2022-03-15 13:52:59,635 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741837649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:52:59,635 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:52:59,635 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:52:59,635 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366179574] [2022-03-15 13:52:59,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:52:59,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:52:59,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:52:59,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:52:59,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:52:59,636 INFO L87 Difference]: Start difference. First operand 8265 states and 23517 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:00,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:00,400 INFO L93 Difference]: Finished difference Result 20121 states and 57525 transitions. [2022-03-15 13:53:00,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:53:00,401 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:00,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:00,442 INFO L225 Difference]: With dead ends: 20121 [2022-03-15 13:53:00,442 INFO L226 Difference]: Without dead ends: 20121 [2022-03-15 13:53:00,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=429, Invalid=1293, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:53:00,443 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 1371 mSDsluCounter, 3406 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 3715 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:00,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 3715 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:53:00,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20121 states. [2022-03-15 13:53:00,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20121 to 8909. [2022-03-15 13:53:00,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8909 states, 8908 states have (on average 2.8431746744499327) internal successors, (25327), 8908 states have internal predecessors, (25327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8909 states to 8909 states and 25327 transitions. [2022-03-15 13:53:00,669 INFO L78 Accepts]: Start accepts. Automaton has 8909 states and 25327 transitions. Word has length 177 [2022-03-15 13:53:00,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:00,670 INFO L470 AbstractCegarLoop]: Abstraction has 8909 states and 25327 transitions. [2022-03-15 13:53:00,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 8909 states and 25327 transitions. [2022-03-15 13:53:00,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:00,683 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:00,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:00,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-03-15 13:53:00,683 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:00,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:00,684 INFO L85 PathProgramCache]: Analyzing trace with hash 778847230, now seen corresponding path program 1 times [2022-03-15 13:53:00,684 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:00,684 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569754853] [2022-03-15 13:53:00,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:00,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:01,014 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:01,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569754853] [2022-03-15 13:53:01,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569754853] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:53:01,014 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177597796] [2022-03-15 13:53:01,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:01,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:53:01,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:53:01,015 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:53:01,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 13:53:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:01,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-15 13:53:01,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:53:01,691 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:53:01,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-15 13:53:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:01,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:53:01,943 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-03-15 13:53:01,943 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 59 [2022-03-15 13:53:02,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:02,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177597796] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:53:02,097 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:53:02,097 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 31 [2022-03-15 13:53:02,097 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434196393] [2022-03-15 13:53:02,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:53:02,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 13:53:02,098 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:02,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 13:53:02,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2022-03-15 13:53:02,099 INFO L87 Difference]: Start difference. First operand 8909 states and 25327 transitions. Second operand has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 31 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:03,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:03,808 INFO L93 Difference]: Finished difference Result 29545 states and 84669 transitions. [2022-03-15 13:53:03,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 13:53:03,809 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 31 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:03,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:03,874 INFO L225 Difference]: With dead ends: 29545 [2022-03-15 13:53:03,874 INFO L226 Difference]: Without dead ends: 29545 [2022-03-15 13:53:03,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 998 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1050, Invalid=3920, Unknown=0, NotChecked=0, Total=4970 [2022-03-15 13:53:03,876 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 1992 mSDsluCounter, 6697 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 7122 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 614 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:03,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1992 Valid, 7122 Invalid, 2254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1618 Invalid, 0 Unknown, 614 Unchecked, 0.7s Time] [2022-03-15 13:53:03,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29545 states. [2022-03-15 13:53:04,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29545 to 11625. [2022-03-15 13:53:04,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11625 states, 11624 states have (on average 2.8681176875430143) internal successors, (33339), 11624 states have internal predecessors, (33339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11625 states to 11625 states and 33339 transitions. [2022-03-15 13:53:04,211 INFO L78 Accepts]: Start accepts. Automaton has 11625 states and 33339 transitions. Word has length 177 [2022-03-15 13:53:04,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:04,212 INFO L470 AbstractCegarLoop]: Abstraction has 11625 states and 33339 transitions. [2022-03-15 13:53:04,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.451612903225806) internal successors, (293), 31 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:04,212 INFO L276 IsEmpty]: Start isEmpty. Operand 11625 states and 33339 transitions. [2022-03-15 13:53:04,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:04,229 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:04,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:04,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 13:53:04,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-03-15 13:53:04,446 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:04,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:04,446 INFO L85 PathProgramCache]: Analyzing trace with hash 466177484, now seen corresponding path program 2 times [2022-03-15 13:53:04,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:04,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078220020] [2022-03-15 13:53:04,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:04,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:04,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:04,854 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:04,854 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078220020] [2022-03-15 13:53:04,854 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078220020] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:04,854 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:04,854 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:53:04,854 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474593677] [2022-03-15 13:53:04,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:04,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:53:04,854 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:04,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:53:04,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:53:04,855 INFO L87 Difference]: Start difference. First operand 11625 states and 33339 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:05,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:05,333 INFO L93 Difference]: Finished difference Result 23067 states and 66157 transitions. [2022-03-15 13:53:05,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 13:53:05,336 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:05,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:05,400 INFO L225 Difference]: With dead ends: 23067 [2022-03-15 13:53:05,400 INFO L226 Difference]: Without dead ends: 23067 [2022-03-15 13:53:05,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=312, Invalid=1020, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:53:05,402 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 1049 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 3223 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:05,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1049 Valid, 3223 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:53:05,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23067 states. [2022-03-15 13:53:05,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23067 to 11799. [2022-03-15 13:53:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11799 states, 11798 states have (on average 2.8687065604339717) internal successors, (33845), 11798 states have internal predecessors, (33845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11799 states to 11799 states and 33845 transitions. [2022-03-15 13:53:05,660 INFO L78 Accepts]: Start accepts. Automaton has 11799 states and 33845 transitions. Word has length 177 [2022-03-15 13:53:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:05,660 INFO L470 AbstractCegarLoop]: Abstraction has 11799 states and 33845 transitions. [2022-03-15 13:53:05,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:05,660 INFO L276 IsEmpty]: Start isEmpty. Operand 11799 states and 33845 transitions. [2022-03-15 13:53:05,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:05,676 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:05,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:05,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-03-15 13:53:05,677 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:05,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:05,677 INFO L85 PathProgramCache]: Analyzing trace with hash -586655790, now seen corresponding path program 2 times [2022-03-15 13:53:05,677 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:05,677 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84949606] [2022-03-15 13:53:05,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:05,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:06,024 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:06,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84949606] [2022-03-15 13:53:06,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84949606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:06,024 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:06,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:06,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617784150] [2022-03-15 13:53:06,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:06,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:06,025 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:06,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:06,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:06,025 INFO L87 Difference]: Start difference. First operand 11799 states and 33845 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:06,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:06,774 INFO L93 Difference]: Finished difference Result 23171 states and 66451 transitions. [2022-03-15 13:53:06,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 13:53:06,774 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:06,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:06,818 INFO L225 Difference]: With dead ends: 23171 [2022-03-15 13:53:06,819 INFO L226 Difference]: Without dead ends: 23171 [2022-03-15 13:53:06,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 13:53:06,819 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1123 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:06,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 3109 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:06,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23171 states. [2022-03-15 13:53:07,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23171 to 12037. [2022-03-15 13:53:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-03-15 13:53:07,078 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-03-15 13:53:07,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:07,078 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-03-15 13:53:07,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:07,078 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-03-15 13:53:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:07,095 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:07,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:07,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-03-15 13:53:07,095 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:07,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:07,096 INFO L85 PathProgramCache]: Analyzing trace with hash -859187188, now seen corresponding path program 3 times [2022-03-15 13:53:07,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:07,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399612295] [2022-03-15 13:53:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:07,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:07,459 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:07,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399612295] [2022-03-15 13:53:07,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399612295] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:07,459 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:07,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:53:07,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428080231] [2022-03-15 13:53:07,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:07,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:53:07,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:07,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:53:07,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:53:07,460 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:08,071 INFO L93 Difference]: Finished difference Result 23085 states and 66203 transitions. [2022-03-15 13:53:08,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:53:08,071 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:08,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:08,119 INFO L225 Difference]: With dead ends: 23085 [2022-03-15 13:53:08,119 INFO L226 Difference]: Without dead ends: 23085 [2022-03-15 13:53:08,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:53:08,120 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1168 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:08,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 2739 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:08,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23085 states. [2022-03-15 13:53:08,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23085 to 12037. [2022-03-15 13:53:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:08,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-03-15 13:53:08,410 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-03-15 13:53:08,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:08,410 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-03-15 13:53:08,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:08,410 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-03-15 13:53:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:08,428 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:08,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:08,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-03-15 13:53:08,428 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:08,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:08,429 INFO L85 PathProgramCache]: Analyzing trace with hash -395612446, now seen corresponding path program 1 times [2022-03-15 13:53:08,429 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:08,429 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133611259] [2022-03-15 13:53:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:08,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:08,840 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:08,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133611259] [2022-03-15 13:53:08,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133611259] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:08,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:08,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:08,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818759033] [2022-03-15 13:53:08,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:08,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:08,841 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:08,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:08,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:08,842 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:09,392 INFO L93 Difference]: Finished difference Result 23197 states and 66527 transitions. [2022-03-15 13:53:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:53:09,392 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:09,439 INFO L225 Difference]: With dead ends: 23197 [2022-03-15 13:53:09,439 INFO L226 Difference]: Without dead ends: 23197 [2022-03-15 13:53:09,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=1006, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:53:09,440 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 1137 mSDsluCounter, 3846 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 4134 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:09,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 4134 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23197 states. [2022-03-15 13:53:09,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23197 to 12037. [2022-03-15 13:53:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-03-15 13:53:09,805 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-03-15 13:53:09,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:09,805 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-03-15 13:53:09,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:09,805 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-03-15 13:53:09,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:09,823 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:09,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:09,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-03-15 13:53:09,823 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:09,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:09,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1801101254, now seen corresponding path program 4 times [2022-03-15 13:53:09,824 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:09,824 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336351826] [2022-03-15 13:53:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:09,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:10,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:10,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336351826] [2022-03-15 13:53:10,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336351826] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:10,255 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:10,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:53:10,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834188073] [2022-03-15 13:53:10,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:10,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:53:10,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:10,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:53:10,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:53:10,257 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:10,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:10,969 INFO L93 Difference]: Finished difference Result 23477 states and 67305 transitions. [2022-03-15 13:53:10,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:53:10,969 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:10,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:11,015 INFO L225 Difference]: With dead ends: 23477 [2022-03-15 13:53:11,015 INFO L226 Difference]: Without dead ends: 23477 [2022-03-15 13:53:11,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=399, Invalid=1241, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 13:53:11,016 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 927 mSDsluCounter, 3075 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 3381 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:11,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [927 Valid, 3381 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:11,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23477 states. [2022-03-15 13:53:11,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23477 to 12021. [2022-03-15 13:53:11,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12021 states, 12020 states have (on average 2.8681364392678868) internal successors, (34475), 12020 states have internal predecessors, (34475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12021 states to 12021 states and 34475 transitions. [2022-03-15 13:53:11,265 INFO L78 Accepts]: Start accepts. Automaton has 12021 states and 34475 transitions. Word has length 177 [2022-03-15 13:53:11,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:11,266 INFO L470 AbstractCegarLoop]: Abstraction has 12021 states and 34475 transitions. [2022-03-15 13:53:11,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:11,266 INFO L276 IsEmpty]: Start isEmpty. Operand 12021 states and 34475 transitions. [2022-03-15 13:53:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:11,282 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:11,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:11,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-03-15 13:53:11,282 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:11,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:11,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2095983646, now seen corresponding path program 2 times [2022-03-15 13:53:11,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:11,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242805728] [2022-03-15 13:53:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:11,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:11,630 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:11,630 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242805728] [2022-03-15 13:53:11,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242805728] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:11,630 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:11,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:11,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734553699] [2022-03-15 13:53:11,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:11,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:11,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:11,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:11,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:11,631 INFO L87 Difference]: Start difference. First operand 12021 states and 34475 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:12,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:12,156 INFO L93 Difference]: Finished difference Result 23261 states and 66703 transitions. [2022-03-15 13:53:12,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:53:12,157 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:12,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:12,202 INFO L225 Difference]: With dead ends: 23261 [2022-03-15 13:53:12,202 INFO L226 Difference]: Without dead ends: 23261 [2022-03-15 13:53:12,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 13:53:12,203 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1039 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:12,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 3628 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:12,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23261 states. [2022-03-15 13:53:12,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23261 to 12037. [2022-03-15 13:53:12,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12037 states, 12036 states have (on average 2.8679793951478896) internal successors, (34519), 12036 states have internal predecessors, (34519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:12,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-03-15 13:53:12,451 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-03-15 13:53:12,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:12,451 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-03-15 13:53:12,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-03-15 13:53:12,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:12,468 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:12,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:12,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-03-15 13:53:12,468 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:12,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:12,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1620224, now seen corresponding path program 3 times [2022-03-15 13:53:12,469 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:12,469 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758661647] [2022-03-15 13:53:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:12,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:12,810 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:12,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758661647] [2022-03-15 13:53:12,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758661647] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:12,810 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:12,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:12,810 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774929407] [2022-03-15 13:53:12,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:12,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:12,810 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:12,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:12,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:12,812 INFO L87 Difference]: Start difference. First operand 12037 states and 34519 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:13,533 INFO L93 Difference]: Finished difference Result 24125 states and 69175 transitions. [2022-03-15 13:53:13,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:53:13,534 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:13,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:13,583 INFO L225 Difference]: With dead ends: 24125 [2022-03-15 13:53:13,584 INFO L226 Difference]: Without dead ends: 24125 [2022-03-15 13:53:13,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=423, Invalid=1299, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:53:13,584 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 1098 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:13,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 3076 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:13,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24125 states. [2022-03-15 13:53:13,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24125 to 12005. [2022-03-15 13:53:13,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12005 states, 12004 states have (on average 2.8682939020326557) internal successors, (34431), 12004 states have internal predecessors, (34431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:13,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12005 states to 12005 states and 34431 transitions. [2022-03-15 13:53:13,843 INFO L78 Accepts]: Start accepts. Automaton has 12005 states and 34431 transitions. Word has length 177 [2022-03-15 13:53:13,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:13,843 INFO L470 AbstractCegarLoop]: Abstraction has 12005 states and 34431 transitions. [2022-03-15 13:53:13,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:13,843 INFO L276 IsEmpty]: Start isEmpty. Operand 12005 states and 34431 transitions. [2022-03-15 13:53:13,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:13,860 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:13,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:13,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-03-15 13:53:13,860 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:13,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:13,860 INFO L85 PathProgramCache]: Analyzing trace with hash -464494442, now seen corresponding path program 3 times [2022-03-15 13:53:13,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:13,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834092406] [2022-03-15 13:53:13,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:13,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:14,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:14,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834092406] [2022-03-15 13:53:14,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834092406] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:14,207 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:14,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:53:14,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573760318] [2022-03-15 13:53:14,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:14,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:53:14,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:14,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:53:14,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:53:14,208 INFO L87 Difference]: Start difference. First operand 12005 states and 34431 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:14,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:14,895 INFO L93 Difference]: Finished difference Result 23945 states and 68795 transitions. [2022-03-15 13:53:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 13:53:14,895 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:14,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:14,941 INFO L225 Difference]: With dead ends: 23945 [2022-03-15 13:53:14,942 INFO L226 Difference]: Without dead ends: 23945 [2022-03-15 13:53:14,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=377, Invalid=1183, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 13:53:14,943 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1084 mSDsluCounter, 3114 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:14,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 3384 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:14,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23945 states. [2022-03-15 13:53:15,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23945 to 12163. [2022-03-15 13:53:15,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12163 states, 12162 states have (on average 2.867702680480184) internal successors, (34877), 12162 states have internal predecessors, (34877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:15,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12163 states to 12163 states and 34877 transitions. [2022-03-15 13:53:15,211 INFO L78 Accepts]: Start accepts. Automaton has 12163 states and 34877 transitions. Word has length 177 [2022-03-15 13:53:15,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:15,212 INFO L470 AbstractCegarLoop]: Abstraction has 12163 states and 34877 transitions. [2022-03-15 13:53:15,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:15,212 INFO L276 IsEmpty]: Start isEmpty. Operand 12163 states and 34877 transitions. [2022-03-15 13:53:15,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:15,228 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:15,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:15,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-03-15 13:53:15,228 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:15,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:15,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1731127998, now seen corresponding path program 5 times [2022-03-15 13:53:15,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:15,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311423870] [2022-03-15 13:53:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:15,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:15,678 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:15,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311423870] [2022-03-15 13:53:15,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311423870] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:15,679 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:15,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:15,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69618880] [2022-03-15 13:53:15,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:15,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:15,679 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:15,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:15,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:15,680 INFO L87 Difference]: Start difference. First operand 12163 states and 34877 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:16,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:16,407 INFO L93 Difference]: Finished difference Result 23735 states and 68113 transitions. [2022-03-15 13:53:16,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 13:53:16,408 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:16,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:16,453 INFO L225 Difference]: With dead ends: 23735 [2022-03-15 13:53:16,453 INFO L226 Difference]: Without dead ends: 23735 [2022-03-15 13:53:16,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 13:53:16,454 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 853 mSDsluCounter, 3295 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:16,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 3565 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:53:16,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23735 states. [2022-03-15 13:53:16,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23735 to 12195. [2022-03-15 13:53:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12195 states, 12194 states have (on average 2.867393800229621) internal successors, (34965), 12194 states have internal predecessors, (34965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12195 states to 12195 states and 34965 transitions. [2022-03-15 13:53:16,761 INFO L78 Accepts]: Start accepts. Automaton has 12195 states and 34965 transitions. Word has length 177 [2022-03-15 13:53:16,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:16,763 INFO L470 AbstractCegarLoop]: Abstraction has 12195 states and 34965 transitions. [2022-03-15 13:53:16,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:16,763 INFO L276 IsEmpty]: Start isEmpty. Operand 12195 states and 34965 transitions. [2022-03-15 13:53:16,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:16,780 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:16,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:16,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-03-15 13:53:16,781 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:16,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:16,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2137801898, now seen corresponding path program 6 times [2022-03-15 13:53:16,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:16,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382395461] [2022-03-15 13:53:16,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:16,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:17,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:17,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382395461] [2022-03-15 13:53:17,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382395461] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:53:17,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772416806] [2022-03-15 13:53:17,207 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 13:53:17,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:53:17,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:53:17,224 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:53:17,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 13:53:17,352 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 13:53:17,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:53:17,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-15 13:53:17,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:53:17,767 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:53:17,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-15 13:53:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:17,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:53:18,007 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-03-15 13:53:18,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 59 [2022-03-15 13:53:18,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:18,147 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772416806] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:53:18,147 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:53:18,147 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 31 [2022-03-15 13:53:18,147 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835569708] [2022-03-15 13:53:18,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:53:18,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 13:53:18,148 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:18,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 13:53:18,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2022-03-15 13:53:18,148 INFO L87 Difference]: Start difference. First operand 12195 states and 34965 transitions. Second operand has 31 states, 31 states have (on average 9.64516129032258) internal successors, (299), 31 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:20,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:20,363 INFO L93 Difference]: Finished difference Result 35572 states and 102436 transitions. [2022-03-15 13:53:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 13:53:20,363 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.64516129032258) internal successors, (299), 31 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:20,447 INFO L225 Difference]: With dead ends: 35572 [2022-03-15 13:53:20,447 INFO L226 Difference]: Without dead ends: 35572 [2022-03-15 13:53:20,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1236, Invalid=5084, Unknown=0, NotChecked=0, Total=6320 [2022-03-15 13:53:20,449 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1967 mSDsluCounter, 7848 mSDsCounter, 0 mSdLazyCounter, 2284 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 8196 SdHoareTripleChecker+Invalid, 2738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 430 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:20,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1967 Valid, 8196 Invalid, 2738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2284 Invalid, 0 Unknown, 430 Unchecked, 0.8s Time] [2022-03-15 13:53:20,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35572 states. [2022-03-15 13:53:20,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35572 to 14807. [2022-03-15 13:53:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14806 states have (on average 2.8810617317303797) internal successors, (42657), 14806 states have internal predecessors, (42657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 42657 transitions. [2022-03-15 13:53:20,891 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 42657 transitions. Word has length 177 [2022-03-15 13:53:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:20,891 INFO L470 AbstractCegarLoop]: Abstraction has 14807 states and 42657 transitions. [2022-03-15 13:53:20,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.64516129032258) internal successors, (299), 31 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:20,891 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 42657 transitions. [2022-03-15 13:53:20,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:20,915 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:20,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:20,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 13:53:21,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:53:21,132 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:21,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:21,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1374048124, now seen corresponding path program 4 times [2022-03-15 13:53:21,132 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:21,132 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057375987] [2022-03-15 13:53:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:21,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:21,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:21,548 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:21,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057375987] [2022-03-15 13:53:21,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057375987] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:21,548 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:21,548 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:53:21,548 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347185212] [2022-03-15 13:53:21,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:21,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:53:21,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:21,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:53:21,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:53:21,549 INFO L87 Difference]: Start difference. First operand 14807 states and 42657 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:22,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:22,342 INFO L93 Difference]: Finished difference Result 26641 states and 76609 transitions. [2022-03-15 13:53:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:53:22,342 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:22,402 INFO L225 Difference]: With dead ends: 26641 [2022-03-15 13:53:22,402 INFO L226 Difference]: Without dead ends: 26641 [2022-03-15 13:53:22,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:53:22,403 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 788 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:22,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 3709 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:53:22,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26641 states. [2022-03-15 13:53:22,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26641 to 14823. [2022-03-15 13:53:22,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14823 states, 14822 states have (on average 2.8819997301308864) internal successors, (42717), 14822 states have internal predecessors, (42717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14823 states to 14823 states and 42717 transitions. [2022-03-15 13:53:22,740 INFO L78 Accepts]: Start accepts. Automaton has 14823 states and 42717 transitions. Word has length 177 [2022-03-15 13:53:22,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:22,740 INFO L470 AbstractCegarLoop]: Abstraction has 14823 states and 42717 transitions. [2022-03-15 13:53:22,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:22,740 INFO L276 IsEmpty]: Start isEmpty. Operand 14823 states and 42717 transitions. [2022-03-15 13:53:22,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:22,764 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:22,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:22,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-15 13:53:22,765 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:22,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:22,765 INFO L85 PathProgramCache]: Analyzing trace with hash -152865438, now seen corresponding path program 1 times [2022-03-15 13:53:22,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:22,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651441368] [2022-03-15 13:53:22,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:22,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:23,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:23,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651441368] [2022-03-15 13:53:23,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651441368] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:23,111 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:23,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:23,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483615999] [2022-03-15 13:53:23,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:23,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:23,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:23,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:23,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:23,112 INFO L87 Difference]: Start difference. First operand 14823 states and 42717 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:23,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:23,762 INFO L93 Difference]: Finished difference Result 26381 states and 75879 transitions. [2022-03-15 13:53:23,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:53:23,763 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:23,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:23,820 INFO L225 Difference]: With dead ends: 26381 [2022-03-15 13:53:23,820 INFO L226 Difference]: Without dead ends: 26381 [2022-03-15 13:53:23,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:53:23,821 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1149 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:23,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 3056 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:23,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26381 states. [2022-03-15 13:53:24,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26381 to 14831. [2022-03-15 13:53:24,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14831 states, 14830 states have (on average 2.881928523263655) internal successors, (42739), 14830 states have internal predecessors, (42739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14831 states to 14831 states and 42739 transitions. [2022-03-15 13:53:24,178 INFO L78 Accepts]: Start accepts. Automaton has 14831 states and 42739 transitions. Word has length 177 [2022-03-15 13:53:24,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:24,179 INFO L470 AbstractCegarLoop]: Abstraction has 14831 states and 42739 transitions. [2022-03-15 13:53:24,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:24,179 INFO L276 IsEmpty]: Start isEmpty. Operand 14831 states and 42739 transitions. [2022-03-15 13:53:24,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:24,201 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:24,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:24,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-03-15 13:53:24,201 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:24,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:24,202 INFO L85 PathProgramCache]: Analyzing trace with hash 48683452, now seen corresponding path program 7 times [2022-03-15 13:53:24,202 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:24,202 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934004292] [2022-03-15 13:53:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:24,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:24,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:24,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:24,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934004292] [2022-03-15 13:53:24,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934004292] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:24,522 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:24,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:53:24,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303858291] [2022-03-15 13:53:24,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:24,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:53:24,522 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:24,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:53:24,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:53:24,523 INFO L87 Difference]: Start difference. First operand 14831 states and 42739 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:25,058 INFO L93 Difference]: Finished difference Result 26033 states and 74891 transitions. [2022-03-15 13:53:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:53:25,059 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:25,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:25,112 INFO L225 Difference]: With dead ends: 26033 [2022-03-15 13:53:25,113 INFO L226 Difference]: Without dead ends: 26033 [2022-03-15 13:53:25,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:53:25,113 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1231 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 3036 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:25,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 3036 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:53:25,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26033 states. [2022-03-15 13:53:25,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26033 to 14823. [2022-03-15 13:53:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14823 states, 14822 states have (on average 2.8819997301308864) internal successors, (42717), 14822 states have internal predecessors, (42717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:25,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14823 states to 14823 states and 42717 transitions. [2022-03-15 13:53:25,472 INFO L78 Accepts]: Start accepts. Automaton has 14823 states and 42717 transitions. Word has length 177 [2022-03-15 13:53:25,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:25,472 INFO L470 AbstractCegarLoop]: Abstraction has 14823 states and 42717 transitions. [2022-03-15 13:53:25,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:25,472 INFO L276 IsEmpty]: Start isEmpty. Operand 14823 states and 42717 transitions. [2022-03-15 13:53:25,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:25,497 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:25,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:25,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-03-15 13:53:25,497 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:25,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:25,498 INFO L85 PathProgramCache]: Analyzing trace with hash 512258194, now seen corresponding path program 4 times [2022-03-15 13:53:25,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:25,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484655853] [2022-03-15 13:53:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:25,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:25,864 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:25,864 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484655853] [2022-03-15 13:53:25,864 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484655853] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:25,864 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:25,864 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:25,864 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467154979] [2022-03-15 13:53:25,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:25,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:25,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:25,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:25,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:25,865 INFO L87 Difference]: Start difference. First operand 14823 states and 42717 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:26,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:26,527 INFO L93 Difference]: Finished difference Result 26145 states and 75215 transitions. [2022-03-15 13:53:26,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:53:26,527 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:26,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:26,579 INFO L225 Difference]: With dead ends: 26145 [2022-03-15 13:53:26,579 INFO L226 Difference]: Without dead ends: 26145 [2022-03-15 13:53:26,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:53:26,580 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1375 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:26,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 3191 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:53:26,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26145 states. [2022-03-15 13:53:26,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26145 to 14807. [2022-03-15 13:53:26,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14806 states have (on average 2.8810617317303797) internal successors, (42657), 14806 states have internal predecessors, (42657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 42657 transitions. [2022-03-15 13:53:26,896 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 42657 transitions. Word has length 177 [2022-03-15 13:53:26,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:26,896 INFO L470 AbstractCegarLoop]: Abstraction has 14807 states and 42657 transitions. [2022-03-15 13:53:26,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:26,896 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 42657 transitions. [2022-03-15 13:53:26,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:26,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:26,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:26,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-03-15 13:53:26,919 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:26,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:26,920 INFO L85 PathProgramCache]: Analyzing trace with hash -301873108, now seen corresponding path program 5 times [2022-03-15 13:53:26,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:26,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400243555] [2022-03-15 13:53:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:26,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:27,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:27,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400243555] [2022-03-15 13:53:27,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400243555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:27,330 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:27,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:53:27,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057370336] [2022-03-15 13:53:27,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:27,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:53:27,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:27,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:53:27,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:53:27,331 INFO L87 Difference]: Start difference. First operand 14807 states and 42657 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:27,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:27,912 INFO L93 Difference]: Finished difference Result 26625 states and 76533 transitions. [2022-03-15 13:53:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:53:27,912 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:27,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:27,968 INFO L225 Difference]: With dead ends: 26625 [2022-03-15 13:53:27,968 INFO L226 Difference]: Without dead ends: 26625 [2022-03-15 13:53:27,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:53:27,969 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 979 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:27,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 3064 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:27,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26625 states. [2022-03-15 13:53:28,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26625 to 14839. [2022-03-15 13:53:28,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14839 states, 14838 states have (on average 2.882396549400189) internal successors, (42769), 14838 states have internal predecessors, (42769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:28,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14839 states to 14839 states and 42769 transitions. [2022-03-15 13:53:28,417 INFO L78 Accepts]: Start accepts. Automaton has 14839 states and 42769 transitions. Word has length 177 [2022-03-15 13:53:28,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:28,417 INFO L470 AbstractCegarLoop]: Abstraction has 14839 states and 42769 transitions. [2022-03-15 13:53:28,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:28,418 INFO L276 IsEmpty]: Start isEmpty. Operand 14839 states and 42769 transitions. [2022-03-15 13:53:28,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:28,443 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:28,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:28,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-03-15 13:53:28,444 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:28,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:28,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1828786670, now seen corresponding path program 2 times [2022-03-15 13:53:28,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:28,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072982887] [2022-03-15 13:53:28,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:28,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:28,769 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:28,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072982887] [2022-03-15 13:53:28,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072982887] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:28,769 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:28,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:28,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730158390] [2022-03-15 13:53:28,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:28,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:28,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:28,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:28,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:28,770 INFO L87 Difference]: Start difference. First operand 14839 states and 42769 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:29,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:29,413 INFO L93 Difference]: Finished difference Result 26373 states and 75825 transitions. [2022-03-15 13:53:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:53:29,413 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:29,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:29,473 INFO L225 Difference]: With dead ends: 26373 [2022-03-15 13:53:29,473 INFO L226 Difference]: Without dead ends: 26373 [2022-03-15 13:53:29,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:53:29,473 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1091 mSDsluCounter, 2618 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:29,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 2904 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:29,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26373 states. [2022-03-15 13:53:29,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26373 to 14855. [2022-03-15 13:53:29,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14855 states, 14854 states have (on average 2.882253938333109) internal successors, (42813), 14854 states have internal predecessors, (42813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:29,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14855 states to 14855 states and 42813 transitions. [2022-03-15 13:53:29,812 INFO L78 Accepts]: Start accepts. Automaton has 14855 states and 42813 transitions. Word has length 177 [2022-03-15 13:53:29,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:29,812 INFO L470 AbstractCegarLoop]: Abstraction has 14855 states and 42813 transitions. [2022-03-15 13:53:29,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:29,812 INFO L276 IsEmpty]: Start isEmpty. Operand 14855 states and 42813 transitions. [2022-03-15 13:53:29,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:29,838 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:29,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:29,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-03-15 13:53:29,838 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:29,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:29,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1627237780, now seen corresponding path program 8 times [2022-03-15 13:53:29,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:29,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31286555] [2022-03-15 13:53:29,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:29,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:30,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:30,156 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:30,156 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31286555] [2022-03-15 13:53:30,156 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31286555] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:30,156 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:30,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:53:30,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457501227] [2022-03-15 13:53:30,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:30,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:53:30,156 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:30,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:53:30,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:53:30,157 INFO L87 Difference]: Start difference. First operand 14855 states and 42813 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:30,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:30,886 INFO L93 Difference]: Finished difference Result 26041 states and 74881 transitions. [2022-03-15 13:53:30,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:53:30,886 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:30,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:30,943 INFO L225 Difference]: With dead ends: 26041 [2022-03-15 13:53:30,943 INFO L226 Difference]: Without dead ends: 26041 [2022-03-15 13:53:30,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 13:53:30,944 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 1281 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:30,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1281 Valid, 3368 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:53:30,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26041 states. [2022-03-15 13:53:31,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26041 to 14855. [2022-03-15 13:53:31,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14855 states, 14854 states have (on average 2.882253938333109) internal successors, (42813), 14854 states have internal predecessors, (42813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14855 states to 14855 states and 42813 transitions. [2022-03-15 13:53:31,275 INFO L78 Accepts]: Start accepts. Automaton has 14855 states and 42813 transitions. Word has length 177 [2022-03-15 13:53:31,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:31,275 INFO L470 AbstractCegarLoop]: Abstraction has 14855 states and 42813 transitions. [2022-03-15 13:53:31,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:31,275 INFO L276 IsEmpty]: Start isEmpty. Operand 14855 states and 42813 transitions. [2022-03-15 13:53:31,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:31,299 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:31,299 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:31,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-03-15 13:53:31,299 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:31,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:31,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1163663038, now seen corresponding path program 5 times [2022-03-15 13:53:31,299 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:31,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812378387] [2022-03-15 13:53:31,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:31,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:31,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:31,748 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:31,748 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812378387] [2022-03-15 13:53:31,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812378387] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:31,748 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:31,749 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:31,749 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863318921] [2022-03-15 13:53:31,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:31,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:31,749 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:31,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:31,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:31,749 INFO L87 Difference]: Start difference. First operand 14855 states and 42813 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:32,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:32,363 INFO L93 Difference]: Finished difference Result 26161 states and 75227 transitions. [2022-03-15 13:53:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:53:32,363 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:32,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:32,420 INFO L225 Difference]: With dead ends: 26161 [2022-03-15 13:53:32,420 INFO L226 Difference]: Without dead ends: 26161 [2022-03-15 13:53:32,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:53:32,421 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 1103 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:32,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 2480 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:32,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26161 states. [2022-03-15 13:53:32,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26161 to 14847. [2022-03-15 13:53:32,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14847 states, 14846 states have (on average 2.881247474067089) internal successors, (42775), 14846 states have internal predecessors, (42775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14847 states to 14847 states and 42775 transitions. [2022-03-15 13:53:32,766 INFO L78 Accepts]: Start accepts. Automaton has 14847 states and 42775 transitions. Word has length 177 [2022-03-15 13:53:32,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:32,766 INFO L470 AbstractCegarLoop]: Abstraction has 14847 states and 42775 transitions. [2022-03-15 13:53:32,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:32,766 INFO L276 IsEmpty]: Start isEmpty. Operand 14847 states and 42775 transitions. [2022-03-15 13:53:32,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:32,790 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:32,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:32,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-03-15 13:53:32,790 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:32,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:32,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1033050662, now seen corresponding path program 9 times [2022-03-15 13:53:32,791 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:32,791 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992045040] [2022-03-15 13:53:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:32,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:33,143 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:33,143 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992045040] [2022-03-15 13:53:33,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992045040] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:33,143 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:33,143 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:53:33,143 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975447367] [2022-03-15 13:53:33,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:33,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:53:33,143 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:33,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:53:33,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:53:33,144 INFO L87 Difference]: Start difference. First operand 14847 states and 42775 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:33,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:33,845 INFO L93 Difference]: Finished difference Result 26377 states and 75813 transitions. [2022-03-15 13:53:33,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:53:33,845 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:33,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:33,904 INFO L225 Difference]: With dead ends: 26377 [2022-03-15 13:53:33,904 INFO L226 Difference]: Without dead ends: 26377 [2022-03-15 13:53:33,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=399, Invalid=1241, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 13:53:33,905 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1346 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:33,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 3152 Invalid, 850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26377 states. [2022-03-15 13:53:34,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26377 to 14831. [2022-03-15 13:53:34,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14831 states, 14830 states have (on average 2.881389076196898) internal successors, (42731), 14830 states have internal predecessors, (42731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:34,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14831 states to 14831 states and 42731 transitions. [2022-03-15 13:53:34,250 INFO L78 Accepts]: Start accepts. Automaton has 14831 states and 42731 transitions. Word has length 177 [2022-03-15 13:53:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:34,251 INFO L470 AbstractCegarLoop]: Abstraction has 14831 states and 42731 transitions. [2022-03-15 13:53:34,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:34,251 INFO L276 IsEmpty]: Start isEmpty. Operand 14831 states and 42731 transitions. [2022-03-15 13:53:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:34,278 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:34,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:34,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-03-15 13:53:34,278 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:34,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:34,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1327933054, now seen corresponding path program 6 times [2022-03-15 13:53:34,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:34,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803948844] [2022-03-15 13:53:34,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:34,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:34,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:34,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803948844] [2022-03-15 13:53:34,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803948844] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:34,659 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:34,659 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:34,659 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240626414] [2022-03-15 13:53:34,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:34,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:34,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:34,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:34,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:34,660 INFO L87 Difference]: Start difference. First operand 14831 states and 42731 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:35,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:35,390 INFO L93 Difference]: Finished difference Result 26169 states and 75233 transitions. [2022-03-15 13:53:35,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:53:35,390 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:35,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:35,448 INFO L225 Difference]: With dead ends: 26169 [2022-03-15 13:53:35,448 INFO L226 Difference]: Without dead ends: 26169 [2022-03-15 13:53:35,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 13:53:35,448 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 1042 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 3255 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:35,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 3255 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:35,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26169 states. [2022-03-15 13:53:35,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26169 to 14847. [2022-03-15 13:53:35,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14847 states, 14846 states have (on average 2.881247474067089) internal successors, (42775), 14846 states have internal predecessors, (42775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:35,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14847 states to 14847 states and 42775 transitions. [2022-03-15 13:53:35,806 INFO L78 Accepts]: Start accepts. Automaton has 14847 states and 42775 transitions. Word has length 177 [2022-03-15 13:53:35,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:35,806 INFO L470 AbstractCegarLoop]: Abstraction has 14847 states and 42775 transitions. [2022-03-15 13:53:35,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:35,806 INFO L276 IsEmpty]: Start isEmpty. Operand 14847 states and 42775 transitions. [2022-03-15 13:53:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:35,829 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:35,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:35,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-03-15 13:53:35,829 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:35,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:35,830 INFO L85 PathProgramCache]: Analyzing trace with hash -766430368, now seen corresponding path program 7 times [2022-03-15 13:53:35,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:35,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785248620] [2022-03-15 13:53:35,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:35,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:36,161 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:36,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785248620] [2022-03-15 13:53:36,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785248620] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:36,161 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:36,161 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:36,161 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183597187] [2022-03-15 13:53:36,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:36,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:36,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:36,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:36,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:36,162 INFO L87 Difference]: Start difference. First operand 14847 states and 42775 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:36,899 INFO L93 Difference]: Finished difference Result 27033 states and 77705 transitions. [2022-03-15 13:53:36,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:53:36,900 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:36,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:36,958 INFO L225 Difference]: With dead ends: 27033 [2022-03-15 13:53:36,958 INFO L226 Difference]: Without dead ends: 27033 [2022-03-15 13:53:36,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=423, Invalid=1299, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:53:36,959 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1051 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:36,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 3142 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:36,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27033 states. [2022-03-15 13:53:37,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27033 to 14807. [2022-03-15 13:53:37,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14806 states have (on average 2.8810617317303797) internal successors, (42657), 14806 states have internal predecessors, (42657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 42657 transitions. [2022-03-15 13:53:37,304 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 42657 transitions. Word has length 177 [2022-03-15 13:53:37,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:37,304 INFO L470 AbstractCegarLoop]: Abstraction has 14807 states and 42657 transitions. [2022-03-15 13:53:37,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 42657 transitions. [2022-03-15 13:53:37,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:37,328 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:37,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:37,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-03-15 13:53:37,329 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:37,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:37,329 INFO L85 PathProgramCache]: Analyzing trace with hash 482623248, now seen corresponding path program 6 times [2022-03-15 13:53:37,329 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:37,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291163445] [2022-03-15 13:53:37,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:37,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:37,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:37,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:37,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291163445] [2022-03-15 13:53:37,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291163445] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:37,684 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:37,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:53:37,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668751302] [2022-03-15 13:53:37,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:37,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:53:37,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:37,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:53:37,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:53:37,685 INFO L87 Difference]: Start difference. First operand 14807 states and 42657 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:38,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:38,462 INFO L93 Difference]: Finished difference Result 30614 states and 87966 transitions. [2022-03-15 13:53:38,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:53:38,462 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:38,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:38,541 INFO L225 Difference]: With dead ends: 30614 [2022-03-15 13:53:38,541 INFO L226 Difference]: Without dead ends: 30614 [2022-03-15 13:53:38,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=442, Invalid=1364, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 13:53:38,542 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 1374 mSDsluCounter, 2777 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:38,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 3104 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:38,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30614 states. [2022-03-15 13:53:38,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30614 to 15091. [2022-03-15 13:53:38,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15091 states, 15090 states have (on average 2.8790589794565937) internal successors, (43445), 15090 states have internal predecessors, (43445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15091 states to 15091 states and 43445 transitions. [2022-03-15 13:53:39,002 INFO L78 Accepts]: Start accepts. Automaton has 15091 states and 43445 transitions. Word has length 177 [2022-03-15 13:53:39,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:39,003 INFO L470 AbstractCegarLoop]: Abstraction has 15091 states and 43445 transitions. [2022-03-15 13:53:39,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:39,003 INFO L276 IsEmpty]: Start isEmpty. Operand 15091 states and 43445 transitions. [2022-03-15 13:53:39,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:39,028 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:39,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:39,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-03-15 13:53:39,029 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:39,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:39,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1354846062, now seen corresponding path program 7 times [2022-03-15 13:53:39,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:39,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146179798] [2022-03-15 13:53:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:39,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:39,370 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:39,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146179798] [2022-03-15 13:53:39,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146179798] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:39,370 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:39,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:53:39,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354298093] [2022-03-15 13:53:39,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:39,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:53:39,370 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:39,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:53:39,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:53:39,371 INFO L87 Difference]: Start difference. First operand 15091 states and 43445 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:40,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:40,129 INFO L93 Difference]: Finished difference Result 27911 states and 80413 transitions. [2022-03-15 13:53:40,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:53:40,129 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:40,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:40,191 INFO L225 Difference]: With dead ends: 27911 [2022-03-15 13:53:40,191 INFO L226 Difference]: Without dead ends: 27911 [2022-03-15 13:53:40,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=396, Invalid=1244, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 13:53:40,192 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 1182 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 3308 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:40,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1182 Valid, 3308 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:53:40,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27911 states. [2022-03-15 13:53:40,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27911 to 15099. [2022-03-15 13:53:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15099 states, 15098 states have (on average 2.8795204662869254) internal successors, (43475), 15098 states have internal predecessors, (43475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:40,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15099 states to 15099 states and 43475 transitions. [2022-03-15 13:53:40,539 INFO L78 Accepts]: Start accepts. Automaton has 15099 states and 43475 transitions. Word has length 177 [2022-03-15 13:53:40,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:40,540 INFO L470 AbstractCegarLoop]: Abstraction has 15099 states and 43475 transitions. [2022-03-15 13:53:40,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:40,540 INFO L276 IsEmpty]: Start isEmpty. Operand 15099 states and 43475 transitions. [2022-03-15 13:53:40,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:40,563 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:40,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:40,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-03-15 13:53:40,563 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:40,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:40,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1218579082, now seen corresponding path program 3 times [2022-03-15 13:53:40,564 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:40,564 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201756253] [2022-03-15 13:53:40,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:40,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:40,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:40,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:40,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201756253] [2022-03-15 13:53:40,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201756253] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:40,883 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:40,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:40,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560232038] [2022-03-15 13:53:40,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:40,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:40,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:40,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:40,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:40,884 INFO L87 Difference]: Start difference. First operand 15099 states and 43475 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:41,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:41,495 INFO L93 Difference]: Finished difference Result 27361 states and 78781 transitions. [2022-03-15 13:53:41,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:53:41,496 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:41,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:41,560 INFO L225 Difference]: With dead ends: 27361 [2022-03-15 13:53:41,561 INFO L226 Difference]: Without dead ends: 27361 [2022-03-15 13:53:41,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 13:53:41,561 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 909 mSDsluCounter, 2816 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:41,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 3132 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:53:41,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27361 states. [2022-03-15 13:53:42,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27361 to 15131. [2022-03-15 13:53:42,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15131 states, 15130 states have (on average 2.8792465300727033) internal successors, (43563), 15130 states have internal predecessors, (43563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15131 states to 15131 states and 43563 transitions. [2022-03-15 13:53:42,093 INFO L78 Accepts]: Start accepts. Automaton has 15131 states and 43563 transitions. Word has length 177 [2022-03-15 13:53:42,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:42,093 INFO L470 AbstractCegarLoop]: Abstraction has 15131 states and 43563 transitions. [2022-03-15 13:53:42,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:42,094 INFO L276 IsEmpty]: Start isEmpty. Operand 15131 states and 43563 transitions. [2022-03-15 13:53:42,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:42,117 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:42,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:42,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-03-15 13:53:42,118 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:42,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:42,122 INFO L85 PathProgramCache]: Analyzing trace with hash 24291170, now seen corresponding path program 4 times [2022-03-15 13:53:42,122 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:42,122 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305273736] [2022-03-15 13:53:42,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:42,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:42,464 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:42,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305273736] [2022-03-15 13:53:42,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305273736] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:53:42,464 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696318752] [2022-03-15 13:53:42,464 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 13:53:42,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:53:42,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:53:42,465 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:53:42,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 13:53:42,595 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 13:53:42,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:53:42,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-15 13:53:42,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:53:43,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:53:43,293 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:53:43,401 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:53:43,634 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:53:43,634 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:53:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:53:43,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:53:45,907 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_996 (Array Int Int)) (~get1~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_996))) (let ((.cse1 (select .cse3 c_~get2~0.base)) (.cse0 (select .cse3 ~get1~0.base))) (or (= (select .cse0 c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse1 (+ c_~get2~0.offset .cse2)) (select .cse0 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-15 13:53:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-15 13:53:46,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696318752] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:53:46,024 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:53:46,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 46 [2022-03-15 13:53:46,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908080370] [2022-03-15 13:53:46,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:53:46,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-15 13:53:46,025 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:46,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-15 13:53:46,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1780, Unknown=5, NotChecked=86, Total=2070 [2022-03-15 13:53:46,025 INFO L87 Difference]: Start difference. First operand 15131 states and 43563 transitions. Second operand has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:49,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:49,306 INFO L93 Difference]: Finished difference Result 31404 states and 90428 transitions. [2022-03-15 13:53:49,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 13:53:49,306 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:49,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:49,381 INFO L225 Difference]: With dead ends: 31404 [2022-03-15 13:53:49,381 INFO L226 Difference]: Without dead ends: 31404 [2022-03-15 13:53:49,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 338 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2055 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1773, Invalid=6968, Unknown=5, NotChecked=184, Total=8930 [2022-03-15 13:53:49,383 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 2683 mSDsluCounter, 8403 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 8627 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1162 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:49,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2683 Valid, 8627 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2602 Invalid, 0 Unknown, 1162 Unchecked, 1.1s Time] [2022-03-15 13:53:49,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31404 states. [2022-03-15 13:53:49,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31404 to 15099. [2022-03-15 13:53:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15099 states, 15098 states have (on average 2.8795204662869254) internal successors, (43475), 15098 states have internal predecessors, (43475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15099 states to 15099 states and 43475 transitions. [2022-03-15 13:53:49,858 INFO L78 Accepts]: Start accepts. Automaton has 15099 states and 43475 transitions. Word has length 177 [2022-03-15 13:53:49,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:49,858 INFO L470 AbstractCegarLoop]: Abstraction has 15099 states and 43475 transitions. [2022-03-15 13:53:49,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:49,858 INFO L276 IsEmpty]: Start isEmpty. Operand 15099 states and 43475 transitions. [2022-03-15 13:53:49,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:49,881 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:49,881 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:49,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 13:53:50,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-03-15 13:53:50,098 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:50,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:50,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1101578668, now seen corresponding path program 8 times [2022-03-15 13:53:50,099 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:50,099 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497599738] [2022-03-15 13:53:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:50,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:50,454 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:50,454 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497599738] [2022-03-15 13:53:50,454 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497599738] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:50,454 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:50,454 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:53:50,454 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439494760] [2022-03-15 13:53:50,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:50,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:53:50,454 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:50,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:53:50,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:53:50,455 INFO L87 Difference]: Start difference. First operand 15099 states and 43475 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:51,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:51,085 INFO L93 Difference]: Finished difference Result 27477 states and 79051 transitions. [2022-03-15 13:53:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:53:51,085 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:51,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:51,145 INFO L225 Difference]: With dead ends: 27477 [2022-03-15 13:53:51,145 INFO L226 Difference]: Without dead ends: 27477 [2022-03-15 13:53:51,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:53:51,146 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1020 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:51,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 3186 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:51,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27477 states. [2022-03-15 13:53:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27477 to 15115. [2022-03-15 13:53:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15115 states, 15114 states have (on average 2.8804419743284373) internal successors, (43535), 15114 states have internal predecessors, (43535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:51,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15115 states to 15115 states and 43535 transitions. [2022-03-15 13:53:51,572 INFO L78 Accepts]: Start accepts. Automaton has 15115 states and 43535 transitions. Word has length 177 [2022-03-15 13:53:51,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:51,572 INFO L470 AbstractCegarLoop]: Abstraction has 15115 states and 43535 transitions. [2022-03-15 13:53:51,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:51,572 INFO L276 IsEmpty]: Start isEmpty. Operand 15115 states and 43535 transitions. [2022-03-15 13:53:51,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:51,597 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:51,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:51,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-03-15 13:53:51,597 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:51,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:51,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1666475066, now seen corresponding path program 5 times [2022-03-15 13:53:51,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:51,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339518328] [2022-03-15 13:53:51,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:51,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:51,937 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:51,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339518328] [2022-03-15 13:53:51,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339518328] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:51,937 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:51,937 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:51,937 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208699836] [2022-03-15 13:53:51,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:51,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:51,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:51,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:51,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:51,938 INFO L87 Difference]: Start difference. First operand 15115 states and 43535 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:52,619 INFO L93 Difference]: Finished difference Result 27233 states and 78373 transitions. [2022-03-15 13:53:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:53:52,620 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:52,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:52,678 INFO L225 Difference]: With dead ends: 27233 [2022-03-15 13:53:52,678 INFO L226 Difference]: Without dead ends: 27233 [2022-03-15 13:53:52,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:53:52,679 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 873 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:52,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 2884 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:52,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27233 states. [2022-03-15 13:53:52,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27233 to 15123. [2022-03-15 13:53:53,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15123 states, 15122 states have (on average 2.880372966538818) internal successors, (43557), 15122 states have internal predecessors, (43557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:53,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15123 states to 15123 states and 43557 transitions. [2022-03-15 13:53:53,041 INFO L78 Accepts]: Start accepts. Automaton has 15123 states and 43557 transitions. Word has length 177 [2022-03-15 13:53:53,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:53,042 INFO L470 AbstractCegarLoop]: Abstraction has 15123 states and 43557 transitions. [2022-03-15 13:53:53,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:53,042 INFO L276 IsEmpty]: Start isEmpty. Operand 15123 states and 43557 transitions. [2022-03-15 13:53:53,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:53,067 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:53,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:53,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-03-15 13:53:53,067 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:53,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:53,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1868023956, now seen corresponding path program 10 times [2022-03-15 13:53:53,068 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:53,068 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055348431] [2022-03-15 13:53:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:53,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:53,416 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:53,416 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055348431] [2022-03-15 13:53:53,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055348431] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:53,416 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:53,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:53:53,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613025905] [2022-03-15 13:53:53,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:53,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:53:53,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:53,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:53:53,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:53:53,417 INFO L87 Difference]: Start difference. First operand 15123 states and 43557 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:53,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:53,937 INFO L93 Difference]: Finished difference Result 27005 states and 77715 transitions. [2022-03-15 13:53:53,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:53:53,938 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:53,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:53,995 INFO L225 Difference]: With dead ends: 27005 [2022-03-15 13:53:53,995 INFO L226 Difference]: Without dead ends: 27005 [2022-03-15 13:53:53,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=336, Invalid=1070, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:53:53,996 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 1070 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 3250 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:53,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 3250 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:53:54,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27005 states. [2022-03-15 13:53:54,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27005 to 15115. [2022-03-15 13:53:54,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15115 states, 15114 states have (on average 2.8804419743284373) internal successors, (43535), 15114 states have internal predecessors, (43535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:54,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15115 states to 15115 states and 43535 transitions. [2022-03-15 13:53:54,338 INFO L78 Accepts]: Start accepts. Automaton has 15115 states and 43535 transitions. Word has length 177 [2022-03-15 13:53:54,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:54,339 INFO L470 AbstractCegarLoop]: Abstraction has 15115 states and 43535 transitions. [2022-03-15 13:53:54,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:54,339 INFO L276 IsEmpty]: Start isEmpty. Operand 15115 states and 43535 transitions. [2022-03-15 13:53:54,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:54,362 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:54,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:54,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-03-15 13:53:54,363 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:54,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:54,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1963368598, now seen corresponding path program 8 times [2022-03-15 13:53:54,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:54,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806749599] [2022-03-15 13:53:54,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:54,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:54,683 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:54,683 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806749599] [2022-03-15 13:53:54,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806749599] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:54,683 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:54,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:54,683 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263784276] [2022-03-15 13:53:54,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:54,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:54,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:54,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:54,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:54,684 INFO L87 Difference]: Start difference. First operand 15115 states and 43535 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:55,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:55,253 INFO L93 Difference]: Finished difference Result 26989 states and 77679 transitions. [2022-03-15 13:53:55,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:53:55,253 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:55,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:55,307 INFO L225 Difference]: With dead ends: 26989 [2022-03-15 13:53:55,308 INFO L226 Difference]: Without dead ends: 26989 [2022-03-15 13:53:55,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=1002, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:53:55,308 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 972 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:55,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 3239 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:53:55,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26989 states. [2022-03-15 13:53:55,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26989 to 15107. [2022-03-15 13:53:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15107 states, 15106 states have (on average 2.8789222825367404) internal successors, (43489), 15106 states have internal predecessors, (43489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:55,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15107 states to 15107 states and 43489 transitions. [2022-03-15 13:53:55,696 INFO L78 Accepts]: Start accepts. Automaton has 15107 states and 43489 transitions. Word has length 177 [2022-03-15 13:53:55,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:55,696 INFO L470 AbstractCegarLoop]: Abstraction has 15107 states and 43489 transitions. [2022-03-15 13:53:55,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:55,697 INFO L276 IsEmpty]: Start isEmpty. Operand 15107 states and 43489 transitions. [2022-03-15 13:53:55,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:55,721 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:55,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:55,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-03-15 13:53:55,721 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:55,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:55,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1840144822, now seen corresponding path program 6 times [2022-03-15 13:53:55,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:55,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553378663] [2022-03-15 13:53:55,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:55,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:55,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:55,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553378663] [2022-03-15 13:53:55,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553378663] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:53:55,970 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:53:55,970 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:53:55,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207455824] [2022-03-15 13:53:55,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:53:55,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:53:55,971 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:55,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:53:55,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:53:55,974 INFO L87 Difference]: Start difference. First operand 15107 states and 43489 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:56,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:53:56,474 INFO L93 Difference]: Finished difference Result 27625 states and 79443 transitions. [2022-03-15 13:53:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:53:56,474 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:53:56,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:53:56,539 INFO L225 Difference]: With dead ends: 27625 [2022-03-15 13:53:56,539 INFO L226 Difference]: Without dead ends: 27625 [2022-03-15 13:53:56,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=433, Invalid=1289, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:53:56,542 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 881 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:53:56,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 3164 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:53:56,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27625 states. [2022-03-15 13:53:56,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27625 to 15127. [2022-03-15 13:53:56,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15127 states, 15126 states have (on average 2.878553484067169) internal successors, (43541), 15126 states have internal predecessors, (43541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15127 states to 15127 states and 43541 transitions. [2022-03-15 13:53:56,910 INFO L78 Accepts]: Start accepts. Automaton has 15127 states and 43541 transitions. Word has length 177 [2022-03-15 13:53:56,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:53:56,911 INFO L470 AbstractCegarLoop]: Abstraction has 15127 states and 43541 transitions. [2022-03-15 13:53:56,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:53:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 15127 states and 43541 transitions. [2022-03-15 13:53:56,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:53:56,936 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:53:56,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:53:56,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-03-15 13:53:56,936 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:53:56,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:53:56,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1211952222, now seen corresponding path program 7 times [2022-03-15 13:53:56,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:53:56,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204482019] [2022-03-15 13:53:56,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:53:56,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:53:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:53:57,346 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:53:57,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204482019] [2022-03-15 13:53:57,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204482019] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:53:57,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830367490] [2022-03-15 13:53:57,346 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 13:53:57,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:53:57,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:53:57,347 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:53:57,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 13:53:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:53:57,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-15 13:53:57,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:53:57,498 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:53:57,629 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-03-15 13:53:57,630 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-03-15 13:53:57,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:53:57,985 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-15 13:53:57,986 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-03-15 13:53:58,086 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:53:58,230 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:53:58,313 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:53:58,548 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-15 13:53:58,548 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:53:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:53:58,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:53:58,896 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1115 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1115))) (let ((.cse2 (select .cse3 c_~get1~0.base)) (.cse0 (select .cse3 ~get2~0.base))) (or (not (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse1)) (select .cse2 (+ c_~get1~0.offset .cse1))))) (= (select .cse2 c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-15 13:53:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-15 13:53:59,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830367490] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:53:59,007 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:53:59,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-03-15 13:53:59,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813211495] [2022-03-15 13:53:59,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:53:59,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-15 13:53:59,007 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:53:59,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-15 13:53:59,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2162, Unknown=1, NotChecked=94, Total=2450 [2022-03-15 13:53:59,008 INFO L87 Difference]: Start difference. First operand 15127 states and 43541 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:02,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:02,203 INFO L93 Difference]: Finished difference Result 33129 states and 95235 transitions. [2022-03-15 13:54:02,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 13:54:02,204 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:02,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:02,267 INFO L225 Difference]: With dead ends: 33129 [2022-03-15 13:54:02,267 INFO L226 Difference]: Without dead ends: 33129 [2022-03-15 13:54:02,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1826 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1765, Invalid=7358, Unknown=1, NotChecked=188, Total=9312 [2022-03-15 13:54:02,268 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 3787 mSDsluCounter, 8253 mSDsCounter, 0 mSdLazyCounter, 2157 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3787 SdHoareTripleChecker+Valid, 8493 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1371 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:02,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3787 Valid, 8493 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2157 Invalid, 0 Unknown, 1371 Unchecked, 1.0s Time] [2022-03-15 13:54:02,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33129 states. [2022-03-15 13:54:02,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33129 to 15031. [2022-03-15 13:54:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15031 states, 15030 states have (on average 2.8793745841650034) internal successors, (43277), 15030 states have internal predecessors, (43277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:02,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15031 states to 15031 states and 43277 transitions. [2022-03-15 13:54:02,620 INFO L78 Accepts]: Start accepts. Automaton has 15031 states and 43277 transitions. Word has length 177 [2022-03-15 13:54:02,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:02,621 INFO L470 AbstractCegarLoop]: Abstraction has 15031 states and 43277 transitions. [2022-03-15 13:54:02,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 15031 states and 43277 transitions. [2022-03-15 13:54:02,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:02,642 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:02,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:02,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 13:54:02,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-03-15 13:54:02,859 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1165193162, now seen corresponding path program 9 times [2022-03-15 13:54:02,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:02,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609581294] [2022-03-15 13:54:02,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:02,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:03,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:03,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609581294] [2022-03-15 13:54:03,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609581294] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:03,201 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:03,201 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:54:03,201 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577443918] [2022-03-15 13:54:03,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:03,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:54:03,201 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:03,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:54:03,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:54:03,202 INFO L87 Difference]: Start difference. First operand 15031 states and 43277 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:03,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:03,952 INFO L93 Difference]: Finished difference Result 27887 states and 80315 transitions. [2022-03-15 13:54:03,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:54:03,952 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:03,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:04,012 INFO L225 Difference]: With dead ends: 27887 [2022-03-15 13:54:04,012 INFO L226 Difference]: Without dead ends: 27887 [2022-03-15 13:54:04,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=396, Invalid=1244, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 13:54:04,012 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1013 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:04,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 3657 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:54:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27887 states. [2022-03-15 13:54:04,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27887 to 15031. [2022-03-15 13:54:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15031 states, 15030 states have (on average 2.8793745841650034) internal successors, (43277), 15030 states have internal predecessors, (43277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:04,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15031 states to 15031 states and 43277 transitions. [2022-03-15 13:54:04,411 INFO L78 Accepts]: Start accepts. Automaton has 15031 states and 43277 transitions. Word has length 177 [2022-03-15 13:54:04,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:04,412 INFO L470 AbstractCegarLoop]: Abstraction has 15031 states and 43277 transitions. [2022-03-15 13:54:04,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:04,412 INFO L276 IsEmpty]: Start isEmpty. Operand 15031 states and 43277 transitions. [2022-03-15 13:54:04,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:04,433 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:04,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:04,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-03-15 13:54:04,433 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:04,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:04,434 INFO L85 PathProgramCache]: Analyzing trace with hash 556348990, now seen corresponding path program 8 times [2022-03-15 13:54:04,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:04,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748357635] [2022-03-15 13:54:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:04,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:04,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:04,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748357635] [2022-03-15 13:54:04,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748357635] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:04,778 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:04,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:54:04,778 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019291935] [2022-03-15 13:54:04,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:04,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:54:04,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:04,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:54:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:54:04,778 INFO L87 Difference]: Start difference. First operand 15031 states and 43277 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:05,420 INFO L93 Difference]: Finished difference Result 27257 states and 78431 transitions. [2022-03-15 13:54:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:54:05,420 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:05,468 INFO L225 Difference]: With dead ends: 27257 [2022-03-15 13:54:05,469 INFO L226 Difference]: Without dead ends: 27257 [2022-03-15 13:54:05,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 13:54:05,471 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1068 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:05,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 3346 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:54:05,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27257 states. [2022-03-15 13:54:05,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27257 to 15033. [2022-03-15 13:54:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15033 states, 15032 states have (on average 2.8792575838211816) internal successors, (43281), 15032 states have internal predecessors, (43281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:05,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15033 states to 15033 states and 43281 transitions. [2022-03-15 13:54:05,771 INFO L78 Accepts]: Start accepts. Automaton has 15033 states and 43281 transitions. Word has length 177 [2022-03-15 13:54:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:05,772 INFO L470 AbstractCegarLoop]: Abstraction has 15033 states and 43281 transitions. [2022-03-15 13:54:05,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 15033 states and 43281 transitions. [2022-03-15 13:54:05,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:05,794 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:05,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:05,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-03-15 13:54:05,794 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:05,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:05,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1799219242, now seen corresponding path program 9 times [2022-03-15 13:54:05,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:05,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293951149] [2022-03-15 13:54:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:05,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:06,218 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:06,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293951149] [2022-03-15 13:54:06,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293951149] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:54:06,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176707738] [2022-03-15 13:54:06,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 13:54:06,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:54:06,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:54:06,219 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:54:06,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 13:54:06,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 13:54:06,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:54:06,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-15 13:54:06,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:54:06,678 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:54:06,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:54:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:06,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:54:06,878 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-03-15 13:54:06,878 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 60 [2022-03-15 13:54:07,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:07,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176707738] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:54:07,008 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:54:07,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 29 [2022-03-15 13:54:07,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555029781] [2022-03-15 13:54:07,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:54:07,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-15 13:54:07,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:07,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-15 13:54:07,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2022-03-15 13:54:07,009 INFO L87 Difference]: Start difference. First operand 15033 states and 43281 transitions. Second operand has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:08,896 INFO L93 Difference]: Finished difference Result 49915 states and 143127 transitions. [2022-03-15 13:54:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 13:54:08,896 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:08,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:09,028 INFO L225 Difference]: With dead ends: 49915 [2022-03-15 13:54:09,029 INFO L226 Difference]: Without dead ends: 49915 [2022-03-15 13:54:09,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 361 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1924 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1322, Invalid=5650, Unknown=0, NotChecked=0, Total=6972 [2022-03-15 13:54:09,040 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 2310 mSDsluCounter, 5784 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 6066 SdHoareTripleChecker+Invalid, 2340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 911 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:09,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2310 Valid, 6066 Invalid, 2340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1409 Invalid, 0 Unknown, 911 Unchecked, 0.4s Time] [2022-03-15 13:54:09,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49915 states. [2022-03-15 13:54:09,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49915 to 15149. [2022-03-15 13:54:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15149 states, 15148 states have (on average 2.8801822022709267) internal successors, (43629), 15148 states have internal predecessors, (43629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15149 states to 15149 states and 43629 transitions. [2022-03-15 13:54:09,533 INFO L78 Accepts]: Start accepts. Automaton has 15149 states and 43629 transitions. Word has length 177 [2022-03-15 13:54:09,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:09,534 INFO L470 AbstractCegarLoop]: Abstraction has 15149 states and 43629 transitions. [2022-03-15 13:54:09,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand 15149 states and 43629 transitions. [2022-03-15 13:54:09,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:09,555 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:09,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:09,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-15 13:54:09,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-03-15 13:54:09,768 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:09,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:09,768 INFO L85 PathProgramCache]: Analyzing trace with hash 673349404, now seen corresponding path program 10 times [2022-03-15 13:54:09,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:09,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751293617] [2022-03-15 13:54:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:09,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:10,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:10,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751293617] [2022-03-15 13:54:10,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751293617] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:10,103 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:10,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:54:10,104 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249883604] [2022-03-15 13:54:10,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:10,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:54:10,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:10,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:54:10,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:54:10,104 INFO L87 Difference]: Start difference. First operand 15149 states and 43629 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:10,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:10,818 INFO L93 Difference]: Finished difference Result 27659 states and 79595 transitions. [2022-03-15 13:54:10,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:54:10,818 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:10,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:10,868 INFO L225 Difference]: With dead ends: 27659 [2022-03-15 13:54:10,868 INFO L226 Difference]: Without dead ends: 27659 [2022-03-15 13:54:10,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=357, Invalid=1125, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 13:54:10,868 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1082 mSDsluCounter, 3512 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 3788 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:10,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 3788 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:54:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27659 states. [2022-03-15 13:54:11,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27659 to 15165. [2022-03-15 13:54:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15165 states, 15164 states have (on average 2.8810999736217355) internal successors, (43689), 15164 states have internal predecessors, (43689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15165 states to 15165 states and 43689 transitions. [2022-03-15 13:54:11,164 INFO L78 Accepts]: Start accepts. Automaton has 15165 states and 43689 transitions. Word has length 177 [2022-03-15 13:54:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:11,164 INFO L470 AbstractCegarLoop]: Abstraction has 15165 states and 43689 transitions. [2022-03-15 13:54:11,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:11,164 INFO L276 IsEmpty]: Start isEmpty. Operand 15165 states and 43689 transitions. [2022-03-15 13:54:11,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:11,184 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:11,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:11,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-03-15 13:54:11,185 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:11,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:11,185 INFO L85 PathProgramCache]: Analyzing trace with hash -853564158, now seen corresponding path program 10 times [2022-03-15 13:54:11,185 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:11,185 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205251061] [2022-03-15 13:54:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:11,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:11,498 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:11,498 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205251061] [2022-03-15 13:54:11,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205251061] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:11,498 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:11,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:54:11,498 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131710497] [2022-03-15 13:54:11,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:11,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:54:11,498 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:11,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:54:11,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:54:11,499 INFO L87 Difference]: Start difference. First operand 15165 states and 43689 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:12,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:12,439 INFO L93 Difference]: Finished difference Result 27399 states and 78865 transitions. [2022-03-15 13:54:12,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:54:12,439 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:12,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:12,500 INFO L225 Difference]: With dead ends: 27399 [2022-03-15 13:54:12,500 INFO L226 Difference]: Without dead ends: 27399 [2022-03-15 13:54:12,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=350, Invalid=1056, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:54:12,500 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1275 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 3080 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:12,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1275 Valid, 3080 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:54:12,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27399 states. [2022-03-15 13:54:12,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27399 to 15173. [2022-03-15 13:54:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15173 states, 15172 states have (on average 2.881030846295808) internal successors, (43711), 15172 states have internal predecessors, (43711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:12,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15173 states to 15173 states and 43711 transitions. [2022-03-15 13:54:12,860 INFO L78 Accepts]: Start accepts. Automaton has 15173 states and 43711 transitions. Word has length 177 [2022-03-15 13:54:12,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:12,861 INFO L470 AbstractCegarLoop]: Abstraction has 15173 states and 43711 transitions. [2022-03-15 13:54:12,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:12,861 INFO L276 IsEmpty]: Start isEmpty. Operand 15173 states and 43711 transitions. [2022-03-15 13:54:12,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:12,963 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:12,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:12,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-03-15 13:54:12,963 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:12,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:12,963 INFO L85 PathProgramCache]: Analyzing trace with hash -652015268, now seen corresponding path program 11 times [2022-03-15 13:54:12,963 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:12,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565461100] [2022-03-15 13:54:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:12,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:13,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:13,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:13,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565461100] [2022-03-15 13:54:13,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565461100] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:13,339 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:13,339 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:54:13,339 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580805242] [2022-03-15 13:54:13,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:13,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:54:13,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:13,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:54:13,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:54:13,340 INFO L87 Difference]: Start difference. First operand 15173 states and 43711 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:13,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:13,997 INFO L93 Difference]: Finished difference Result 27051 states and 77877 transitions. [2022-03-15 13:54:13,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:54:13,997 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:13,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:14,054 INFO L225 Difference]: With dead ends: 27051 [2022-03-15 13:54:14,054 INFO L226 Difference]: Without dead ends: 27051 [2022-03-15 13:54:14,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 13:54:14,065 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1068 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 3144 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:14,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 3144 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:54:14,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27051 states. [2022-03-15 13:54:14,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27051 to 15165. [2022-03-15 13:54:14,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15165 states, 15164 states have (on average 2.8810999736217355) internal successors, (43689), 15164 states have internal predecessors, (43689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15165 states to 15165 states and 43689 transitions. [2022-03-15 13:54:14,370 INFO L78 Accepts]: Start accepts. Automaton has 15165 states and 43689 transitions. Word has length 177 [2022-03-15 13:54:14,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:14,370 INFO L470 AbstractCegarLoop]: Abstraction has 15165 states and 43689 transitions. [2022-03-15 13:54:14,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:14,370 INFO L276 IsEmpty]: Start isEmpty. Operand 15165 states and 43689 transitions. [2022-03-15 13:54:14,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:14,391 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:14,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:14,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-03-15 13:54:14,391 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:14,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:14,391 INFO L85 PathProgramCache]: Analyzing trace with hash -188440526, now seen corresponding path program 9 times [2022-03-15 13:54:14,391 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:14,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575905862] [2022-03-15 13:54:14,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:14,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:14,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:14,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575905862] [2022-03-15 13:54:14,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575905862] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:14,708 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:14,708 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:54:14,708 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875044885] [2022-03-15 13:54:14,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:14,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:54:14,709 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:14,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:54:14,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:54:14,709 INFO L87 Difference]: Start difference. First operand 15165 states and 43689 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:15,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:15,389 INFO L93 Difference]: Finished difference Result 27163 states and 78201 transitions. [2022-03-15 13:54:15,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:54:15,389 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:15,439 INFO L225 Difference]: With dead ends: 27163 [2022-03-15 13:54:15,439 INFO L226 Difference]: Without dead ends: 27163 [2022-03-15 13:54:15,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:54:15,440 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1172 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:15,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 2370 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:54:15,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27163 states. [2022-03-15 13:54:15,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27163 to 15147. [2022-03-15 13:54:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15147 states, 15146 states have (on average 2.8801663805625246) internal successors, (43623), 15146 states have internal predecessors, (43623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:15,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15147 states to 15147 states and 43623 transitions. [2022-03-15 13:54:15,780 INFO L78 Accepts]: Start accepts. Automaton has 15147 states and 43623 transitions. Word has length 177 [2022-03-15 13:54:15,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:15,780 INFO L470 AbstractCegarLoop]: Abstraction has 15147 states and 43623 transitions. [2022-03-15 13:54:15,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 15147 states and 43623 transitions. [2022-03-15 13:54:15,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:15,800 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:15,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:15,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-03-15 13:54:15,800 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:15,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:15,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1002571828, now seen corresponding path program 11 times [2022-03-15 13:54:15,800 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:15,800 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398053408] [2022-03-15 13:54:15,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:15,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:16,214 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:16,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398053408] [2022-03-15 13:54:16,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398053408] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:16,214 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:16,214 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:54:16,214 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775674045] [2022-03-15 13:54:16,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:16,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:54:16,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:16,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:54:16,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:54:16,215 INFO L87 Difference]: Start difference. First operand 15147 states and 43623 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:16,718 INFO L93 Difference]: Finished difference Result 27559 states and 79273 transitions. [2022-03-15 13:54:16,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:54:16,718 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:16,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:16,778 INFO L225 Difference]: With dead ends: 27559 [2022-03-15 13:54:16,779 INFO L226 Difference]: Without dead ends: 27559 [2022-03-15 13:54:16,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:54:16,781 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1295 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:16,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1295 Valid, 2657 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:54:16,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27559 states. [2022-03-15 13:54:17,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27559 to 15147. [2022-03-15 13:54:17,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15147 states, 15146 states have (on average 2.8796381883005413) internal successors, (43615), 15146 states have internal predecessors, (43615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15147 states to 15147 states and 43615 transitions. [2022-03-15 13:54:17,137 INFO L78 Accepts]: Start accepts. Automaton has 15147 states and 43615 transitions. Word has length 177 [2022-03-15 13:54:17,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:17,137 INFO L470 AbstractCegarLoop]: Abstraction has 15147 states and 43615 transitions. [2022-03-15 13:54:17,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:17,137 INFO L276 IsEmpty]: Start isEmpty. Operand 15147 states and 43615 transitions. [2022-03-15 13:54:17,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:17,158 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:17,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:17,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-03-15 13:54:17,158 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:17,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:17,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1765481906, now seen corresponding path program 11 times [2022-03-15 13:54:17,159 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:17,159 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756439538] [2022-03-15 13:54:17,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:17,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:17,389 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:17,390 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756439538] [2022-03-15 13:54:17,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756439538] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:17,390 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:17,390 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:54:17,390 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162392798] [2022-03-15 13:54:17,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:17,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:54:17,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:17,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:54:17,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:54:17,390 INFO L87 Difference]: Start difference. First operand 15147 states and 43615 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:17,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:17,876 INFO L93 Difference]: Finished difference Result 26935 states and 77239 transitions. [2022-03-15 13:54:17,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:54:17,877 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:17,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:17,930 INFO L225 Difference]: With dead ends: 26935 [2022-03-15 13:54:17,930 INFO L226 Difference]: Without dead ends: 26935 [2022-03-15 13:54:17,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:54:17,930 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1274 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2821 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:17,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1274 Valid, 2821 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:54:17,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26935 states. [2022-03-15 13:54:18,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26935 to 14779. [2022-03-15 13:54:18,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14779 states, 14778 states have (on average 2.861753958587089) internal successors, (42291), 14778 states have internal predecessors, (42291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:18,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14779 states to 14779 states and 42291 transitions. [2022-03-15 13:54:18,332 INFO L78 Accepts]: Start accepts. Automaton has 14779 states and 42291 transitions. Word has length 177 [2022-03-15 13:54:18,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:18,332 INFO L470 AbstractCegarLoop]: Abstraction has 14779 states and 42291 transitions. [2022-03-15 13:54:18,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:18,333 INFO L276 IsEmpty]: Start isEmpty. Operand 14779 states and 42291 transitions. [2022-03-15 13:54:18,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:18,355 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:18,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:18,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-03-15 13:54:18,355 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:18,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1967030796, now seen corresponding path program 12 times [2022-03-15 13:54:18,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:18,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715496226] [2022-03-15 13:54:18,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:18,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:18,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:18,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715496226] [2022-03-15 13:54:18,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715496226] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:18,764 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:18,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:54:18,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035569817] [2022-03-15 13:54:18,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:18,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:54:18,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:18,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:54:18,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:54:18,765 INFO L87 Difference]: Start difference. First operand 14779 states and 42291 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:19,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:19,240 INFO L93 Difference]: Finished difference Result 26603 states and 76295 transitions. [2022-03-15 13:54:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:54:19,240 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:19,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:19,301 INFO L225 Difference]: With dead ends: 26603 [2022-03-15 13:54:19,301 INFO L226 Difference]: Without dead ends: 26603 [2022-03-15 13:54:19,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 13:54:19,302 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1068 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:19,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 3132 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:54:19,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26603 states. [2022-03-15 13:54:19,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26603 to 14779. [2022-03-15 13:54:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14779 states, 14778 states have (on average 2.861753958587089) internal successors, (42291), 14778 states have internal predecessors, (42291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14779 states to 14779 states and 42291 transitions. [2022-03-15 13:54:19,715 INFO L78 Accepts]: Start accepts. Automaton has 14779 states and 42291 transitions. Word has length 177 [2022-03-15 13:54:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:19,715 INFO L470 AbstractCegarLoop]: Abstraction has 14779 states and 42291 transitions. [2022-03-15 13:54:19,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:19,716 INFO L276 IsEmpty]: Start isEmpty. Operand 14779 states and 42291 transitions. [2022-03-15 13:54:19,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:19,740 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:19,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:19,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-03-15 13:54:19,740 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:19,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:19,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1864361758, now seen corresponding path program 10 times [2022-03-15 13:54:19,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:19,741 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498664965] [2022-03-15 13:54:19,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:19,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:20,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:20,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498664965] [2022-03-15 13:54:20,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498664965] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:20,081 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:20,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:54:20,082 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493955388] [2022-03-15 13:54:20,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:20,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:54:20,082 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:20,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:54:20,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:54:20,082 INFO L87 Difference]: Start difference. First operand 14779 states and 42291 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:20,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:20,853 INFO L93 Difference]: Finished difference Result 26723 states and 76641 transitions. [2022-03-15 13:54:20,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:54:20,854 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:20,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:20,913 INFO L225 Difference]: With dead ends: 26723 [2022-03-15 13:54:20,914 INFO L226 Difference]: Without dead ends: 26723 [2022-03-15 13:54:20,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:54:20,914 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 1084 mSDsluCounter, 3471 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 3767 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:20,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 3767 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:54:20,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26723 states. [2022-03-15 13:54:21,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26723 to 14771. [2022-03-15 13:54:21,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14771 states, 14770 states have (on average 2.860731211916046) internal successors, (42253), 14770 states have internal predecessors, (42253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14771 states to 14771 states and 42253 transitions. [2022-03-15 13:54:21,238 INFO L78 Accepts]: Start accepts. Automaton has 14771 states and 42253 transitions. Word has length 177 [2022-03-15 13:54:21,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:21,239 INFO L470 AbstractCegarLoop]: Abstraction has 14771 states and 42253 transitions. [2022-03-15 13:54:21,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:21,239 INFO L276 IsEmpty]: Start isEmpty. Operand 14771 states and 42253 transitions. [2022-03-15 13:54:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:21,261 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:21,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:21,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-03-15 13:54:21,262 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:21,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:21,262 INFO L85 PathProgramCache]: Analyzing trace with hash 332351942, now seen corresponding path program 13 times [2022-03-15 13:54:21,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:21,262 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186078779] [2022-03-15 13:54:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:21,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:21,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:21,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186078779] [2022-03-15 13:54:21,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186078779] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:21,817 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:21,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:54:21,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891345102] [2022-03-15 13:54:21,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:21,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:54:21,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:21,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:54:21,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:54:21,817 INFO L87 Difference]: Start difference. First operand 14771 states and 42253 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:22,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:22,635 INFO L93 Difference]: Finished difference Result 25753 states and 73603 transitions. [2022-03-15 13:54:22,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:54:22,635 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:22,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:22,686 INFO L225 Difference]: With dead ends: 25753 [2022-03-15 13:54:22,686 INFO L226 Difference]: Without dead ends: 25753 [2022-03-15 13:54:22,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 13:54:22,687 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1305 mSDsluCounter, 3824 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 4115 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:22,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 4115 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:54:22,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25753 states. [2022-03-15 13:54:23,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25753 to 13913. [2022-03-15 13:54:23,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13913 states, 13912 states have (on average 2.850848188614146) internal successors, (39661), 13912 states have internal predecessors, (39661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:23,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13913 states to 13913 states and 39661 transitions. [2022-03-15 13:54:23,065 INFO L78 Accepts]: Start accepts. Automaton has 13913 states and 39661 transitions. Word has length 177 [2022-03-15 13:54:23,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:23,065 INFO L470 AbstractCegarLoop]: Abstraction has 13913 states and 39661 transitions. [2022-03-15 13:54:23,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 13913 states and 39661 transitions. [2022-03-15 13:54:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:23,084 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:23,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:23,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-03-15 13:54:23,085 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:23,087 INFO L85 PathProgramCache]: Analyzing trace with hash 627234334, now seen corresponding path program 11 times [2022-03-15 13:54:23,087 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:23,087 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098727649] [2022-03-15 13:54:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:23,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:23,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:23,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098727649] [2022-03-15 13:54:23,418 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098727649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:23,418 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:23,418 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:54:23,418 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673693481] [2022-03-15 13:54:23,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:23,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:54:23,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:23,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:54:23,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:54:23,419 INFO L87 Difference]: Start difference. First operand 13913 states and 39661 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:24,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:24,113 INFO L93 Difference]: Finished difference Result 25473 states and 72801 transitions. [2022-03-15 13:54:24,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:54:24,113 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:24,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:24,161 INFO L225 Difference]: With dead ends: 25473 [2022-03-15 13:54:24,162 INFO L226 Difference]: Without dead ends: 25473 [2022-03-15 13:54:24,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 13:54:24,162 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1080 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 3239 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:24,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1080 Valid, 3239 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:54:24,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25473 states. [2022-03-15 13:54:24,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25473 to 13929. [2022-03-15 13:54:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13929 states, 13928 states have (on average 2.850732337736933) internal successors, (39705), 13928 states have internal predecessors, (39705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:24,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13929 states to 13929 states and 39705 transitions. [2022-03-15 13:54:24,511 INFO L78 Accepts]: Start accepts. Automaton has 13929 states and 39705 transitions. Word has length 177 [2022-03-15 13:54:24,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:24,511 INFO L470 AbstractCegarLoop]: Abstraction has 13929 states and 39705 transitions. [2022-03-15 13:54:24,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:24,512 INFO L276 IsEmpty]: Start isEmpty. Operand 13929 states and 39705 transitions. [2022-03-15 13:54:24,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:24,530 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:24,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:24,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-03-15 13:54:24,531 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:24,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:24,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1467129088, now seen corresponding path program 12 times [2022-03-15 13:54:24,531 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:24,531 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571615870] [2022-03-15 13:54:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:24,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:24,848 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:24,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571615870] [2022-03-15 13:54:24,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571615870] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:24,848 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:24,848 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:54:24,848 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673155410] [2022-03-15 13:54:24,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:24,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:54:24,848 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:24,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:54:24,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:54:24,849 INFO L87 Difference]: Start difference. First operand 13929 states and 39705 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:25,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:25,536 INFO L93 Difference]: Finished difference Result 26337 states and 75273 transitions. [2022-03-15 13:54:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:54:25,536 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:25,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:25,583 INFO L225 Difference]: With dead ends: 26337 [2022-03-15 13:54:25,584 INFO L226 Difference]: Without dead ends: 26337 [2022-03-15 13:54:25,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=1295, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:54:25,584 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 1292 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1292 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:25,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1292 Valid, 2703 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:54:25,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26337 states. [2022-03-15 13:54:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26337 to 13887. [2022-03-15 13:54:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13887 states, 13886 states have (on average 2.850568918335014) internal successors, (39583), 13886 states have internal predecessors, (39583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:25,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13887 states to 13887 states and 39583 transitions. [2022-03-15 13:54:25,871 INFO L78 Accepts]: Start accepts. Automaton has 13887 states and 39583 transitions. Word has length 177 [2022-03-15 13:54:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:25,872 INFO L470 AbstractCegarLoop]: Abstraction has 13887 states and 39583 transitions. [2022-03-15 13:54:25,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 13887 states and 39583 transitions. [2022-03-15 13:54:25,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:25,891 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:25,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:25,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-03-15 13:54:25,891 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:25,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:25,891 INFO L85 PathProgramCache]: Analyzing trace with hash -850243970, now seen corresponding path program 12 times [2022-03-15 13:54:25,891 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:25,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747097646] [2022-03-15 13:54:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:25,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:26,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:26,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747097646] [2022-03-15 13:54:26,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747097646] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:54:26,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243437137] [2022-03-15 13:54:26,281 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 13:54:26,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:54:26,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:54:26,282 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:54:26,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 13:54:26,406 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 13:54:26,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:54:26,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-15 13:54:26,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:54:26,803 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-15 13:54:26,805 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:54:26,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:26,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:54:27,042 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-03-15 13:54:27,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 60 [2022-03-15 13:54:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:27,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243437137] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:54:27,128 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:54:27,128 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 9] total 35 [2022-03-15 13:54:27,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085868725] [2022-03-15 13:54:27,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:54:27,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 13:54:27,129 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:27,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 13:54:27,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1011, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 13:54:27,129 INFO L87 Difference]: Start difference. First operand 13887 states and 39583 transitions. Second operand has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 35 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:27,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:27,857 INFO L93 Difference]: Finished difference Result 27255 states and 77861 transitions. [2022-03-15 13:54:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 13:54:27,857 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 35 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:27,916 INFO L225 Difference]: With dead ends: 27255 [2022-03-15 13:54:27,917 INFO L226 Difference]: Without dead ends: 27255 [2022-03-15 13:54:27,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 349 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=736, Invalid=2804, Unknown=0, NotChecked=0, Total=3540 [2022-03-15 13:54:27,917 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 1585 mSDsluCounter, 5414 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 5722 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 302 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:27,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 5722 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1114 Invalid, 0 Unknown, 302 Unchecked, 0.3s Time] [2022-03-15 13:54:27,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27255 states. [2022-03-15 13:54:28,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27255 to 13881. [2022-03-15 13:54:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13881 states, 13880 states have (on average 2.8505043227665707) internal successors, (39565), 13880 states have internal predecessors, (39565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13881 states to 13881 states and 39565 transitions. [2022-03-15 13:54:28,280 INFO L78 Accepts]: Start accepts. Automaton has 13881 states and 39565 transitions. Word has length 177 [2022-03-15 13:54:28,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:28,280 INFO L470 AbstractCegarLoop]: Abstraction has 13881 states and 39565 transitions. [2022-03-15 13:54:28,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 35 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:28,281 INFO L276 IsEmpty]: Start isEmpty. Operand 13881 states and 39565 transitions. [2022-03-15 13:54:28,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:28,303 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:28,303 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:28,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 13:54:28,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-03-15 13:54:28,520 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:28,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:28,521 INFO L85 PathProgramCache]: Analyzing trace with hash -437921898, now seen corresponding path program 13 times [2022-03-15 13:54:28,521 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:28,521 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975559173] [2022-03-15 13:54:28,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:28,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:28,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:28,900 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:28,900 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975559173] [2022-03-15 13:54:28,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975559173] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:54:28,900 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373998311] [2022-03-15 13:54:28,900 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 13:54:28,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:54:28,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:54:28,901 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:54:28,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 13:54:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:29,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-15 13:54:29,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:54:29,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:54:29,161 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-03-15 13:54:29,162 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-03-15 13:54:29,257 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:54:29,501 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-15 13:54:29,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-03-15 13:54:29,570 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:54:29,674 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:54:29,738 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:54:29,937 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-15 13:54:29,938 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:54:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:54:29,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:54:30,177 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1426 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1426))) (let ((.cse0 (select .cse3 c_~get1~0.base)) (.cse2 (select .cse3 ~get2~0.base))) (or (not (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get1~0.offset .cse1)) (select .cse2 (+ c_~get2~0.offset .cse1))))) (= (select .cse0 c_~get1~0.offset) (select .cse2 c_~get2~0.offset)))))) is different from false [2022-03-15 13:54:30,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-15 13:54:30,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373998311] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:54:30,249 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:54:30,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-03-15 13:54:30,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724099913] [2022-03-15 13:54:30,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:54:30,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-15 13:54:30,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:30,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-15 13:54:30,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2149, Unknown=1, NotChecked=94, Total=2450 [2022-03-15 13:54:30,251 INFO L87 Difference]: Start difference. First operand 13881 states and 39565 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:32,577 INFO L93 Difference]: Finished difference Result 27224 states and 77936 transitions. [2022-03-15 13:54:32,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-15 13:54:32,577 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:32,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:32,628 INFO L225 Difference]: With dead ends: 27224 [2022-03-15 13:54:32,628 INFO L226 Difference]: Without dead ends: 27224 [2022-03-15 13:54:32,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1764 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1673, Invalid=7072, Unknown=1, NotChecked=184, Total=8930 [2022-03-15 13:54:32,629 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 3076 mSDsluCounter, 7495 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3076 SdHoareTripleChecker+Valid, 7713 SdHoareTripleChecker+Invalid, 3754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1486 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:32,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3076 Valid, 7713 Invalid, 3754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2212 Invalid, 0 Unknown, 1486 Unchecked, 0.7s Time] [2022-03-15 13:54:32,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27224 states. [2022-03-15 13:54:32,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27224 to 13145. [2022-03-15 13:54:32,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13145 states, 13144 states have (on average 2.8651095556908093) internal successors, (37659), 13144 states have internal predecessors, (37659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13145 states to 13145 states and 37659 transitions. [2022-03-15 13:54:32,954 INFO L78 Accepts]: Start accepts. Automaton has 13145 states and 37659 transitions. Word has length 177 [2022-03-15 13:54:32,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:32,954 INFO L470 AbstractCegarLoop]: Abstraction has 13145 states and 37659 transitions. [2022-03-15 13:54:32,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:32,954 INFO L276 IsEmpty]: Start isEmpty. Operand 13145 states and 37659 transitions. [2022-03-15 13:54:32,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:32,972 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:32,972 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:32,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-03-15 13:54:33,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:54:33,188 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:33,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:33,188 INFO L85 PathProgramCache]: Analyzing trace with hash -190982338, now seen corresponding path program 12 times [2022-03-15 13:54:33,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:33,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204841727] [2022-03-15 13:54:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:33,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:33,457 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:33,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204841727] [2022-03-15 13:54:33,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204841727] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:33,458 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:33,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:54:33,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112929288] [2022-03-15 13:54:33,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:33,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:54:33,458 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:33,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:54:33,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:54:33,458 INFO L87 Difference]: Start difference. First operand 13145 states and 37659 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:34,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:34,002 INFO L93 Difference]: Finished difference Result 28662 states and 82319 transitions. [2022-03-15 13:54:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:54:34,003 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:34,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:34,052 INFO L225 Difference]: With dead ends: 28662 [2022-03-15 13:54:34,052 INFO L226 Difference]: Without dead ends: 28662 [2022-03-15 13:54:34,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:54:34,053 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1028 mSDsluCounter, 4257 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 4580 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:34,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 4580 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:54:34,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28662 states. [2022-03-15 13:54:34,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28662 to 13657. [2022-03-15 13:54:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13657 states, 13656 states have (on average 2.8615260691271236) internal successors, (39077), 13656 states have internal predecessors, (39077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13657 states to 13657 states and 39077 transitions. [2022-03-15 13:54:34,569 INFO L78 Accepts]: Start accepts. Automaton has 13657 states and 39077 transitions. Word has length 177 [2022-03-15 13:54:34,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:34,569 INFO L470 AbstractCegarLoop]: Abstraction has 13657 states and 39077 transitions. [2022-03-15 13:54:34,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:34,570 INFO L276 IsEmpty]: Start isEmpty. Operand 13657 states and 39077 transitions. [2022-03-15 13:54:34,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:34,590 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:34,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:34,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-03-15 13:54:34,590 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:34,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:34,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1068165586, now seen corresponding path program 14 times [2022-03-15 13:54:34,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:34,591 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630227537] [2022-03-15 13:54:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:34,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:34,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:34,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:34,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630227537] [2022-03-15 13:54:34,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630227537] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:34,932 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:34,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:54:34,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587914958] [2022-03-15 13:54:34,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:34,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:54:34,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:34,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:54:34,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:54:34,933 INFO L87 Difference]: Start difference. First operand 13657 states and 39077 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:35,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:35,764 INFO L93 Difference]: Finished difference Result 22774 states and 65512 transitions. [2022-03-15 13:54:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:54:35,764 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:35,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:35,807 INFO L225 Difference]: With dead ends: 22774 [2022-03-15 13:54:35,807 INFO L226 Difference]: Without dead ends: 22774 [2022-03-15 13:54:35,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:54:35,808 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1048 mSDsluCounter, 3534 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 3838 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:35,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1048 Valid, 3838 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 13:54:35,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22774 states. [2022-03-15 13:54:36,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22774 to 13857. [2022-03-15 13:54:36,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13857 states, 13856 states have (on average 2.859483256351039) internal successors, (39621), 13856 states have internal predecessors, (39621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13857 states to 13857 states and 39621 transitions. [2022-03-15 13:54:36,145 INFO L78 Accepts]: Start accepts. Automaton has 13857 states and 39621 transitions. Word has length 177 [2022-03-15 13:54:36,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:36,145 INFO L470 AbstractCegarLoop]: Abstraction has 13857 states and 39621 transitions. [2022-03-15 13:54:36,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:36,145 INFO L276 IsEmpty]: Start isEmpty. Operand 13857 states and 39621 transitions. [2022-03-15 13:54:36,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:36,167 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:36,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:36,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-03-15 13:54:36,167 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:36,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:36,168 INFO L85 PathProgramCache]: Analyzing trace with hash 264718334, now seen corresponding path program 15 times [2022-03-15 13:54:36,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:36,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226588506] [2022-03-15 13:54:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:36,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:36,469 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:36,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226588506] [2022-03-15 13:54:36,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226588506] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:54:36,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817115996] [2022-03-15 13:54:36,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 13:54:36,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:54:36,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:54:36,470 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:54:36,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 13:54:36,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 13:54:36,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:54:36,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-15 13:54:36,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:54:36,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:54:36,646 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 13:54:36,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-15 13:54:36,777 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-03-15 13:54:36,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-03-15 13:54:36,893 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:54:37,283 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-03-15 13:54:37,283 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-03-15 13:54:37,386 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:54:37,519 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:54:37,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:54:38,028 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-15 13:54:38,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-15 13:54:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:54:38,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:54:38,451 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1498 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1498))) (let ((.cse1 (select .cse3 ~get2~0.base)) (.cse0 (select .cse3 c_~get1~0.base))) (or (<= (select .cse0 c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (< (select .cse1 (+ c_~get2~0.offset .cse2)) (select .cse0 (+ c_~get1~0.offset .cse2)))))))) is different from false [2022-03-15 13:54:38,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-15 13:54:38,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817115996] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:54:38,520 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:54:38,520 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 12] total 56 [2022-03-15 13:54:38,520 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74309632] [2022-03-15 13:54:38,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:54:38,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-15 13:54:38,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:38,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-15 13:54:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2738, Unknown=1, NotChecked=106, Total=3080 [2022-03-15 13:54:38,521 INFO L87 Difference]: Start difference. First operand 13857 states and 39621 transitions. Second operand has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:41,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:41,568 INFO L93 Difference]: Finished difference Result 34988 states and 100937 transitions. [2022-03-15 13:54:41,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 13:54:41,568 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:41,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:41,650 INFO L225 Difference]: With dead ends: 34988 [2022-03-15 13:54:41,650 INFO L226 Difference]: Without dead ends: 34988 [2022-03-15 13:54:41,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 330 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2625 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2031, Invalid=9528, Unknown=1, NotChecked=212, Total=11772 [2022-03-15 13:54:41,651 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 3811 mSDsluCounter, 13606 mSDsCounter, 0 mSdLazyCounter, 3611 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3811 SdHoareTripleChecker+Valid, 13847 SdHoareTripleChecker+Invalid, 5279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1606 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:41,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3811 Valid, 13847 Invalid, 5279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3611 Invalid, 0 Unknown, 1606 Unchecked, 1.0s Time] [2022-03-15 13:54:41,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34988 states. [2022-03-15 13:54:42,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34988 to 16569. [2022-03-15 13:54:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16569 states, 16568 states have (on average 2.8684814099468854) internal successors, (47525), 16568 states have internal predecessors, (47525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:42,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16569 states to 16569 states and 47525 transitions. [2022-03-15 13:54:42,170 INFO L78 Accepts]: Start accepts. Automaton has 16569 states and 47525 transitions. Word has length 177 [2022-03-15 13:54:42,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:42,170 INFO L470 AbstractCegarLoop]: Abstraction has 16569 states and 47525 transitions. [2022-03-15 13:54:42,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:42,171 INFO L276 IsEmpty]: Start isEmpty. Operand 16569 states and 47525 transitions. [2022-03-15 13:54:42,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:42,197 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:42,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:42,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 13:54:42,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:54:42,404 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:42,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:42,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1010134096, now seen corresponding path program 14 times [2022-03-15 13:54:42,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:42,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83745392] [2022-03-15 13:54:42,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:42,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:42,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:42,702 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:42,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83745392] [2022-03-15 13:54:42,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83745392] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:54:42,702 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367427141] [2022-03-15 13:54:42,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 13:54:42,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:54:42,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:54:42,712 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:54:42,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 13:54:42,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 13:54:42,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:54:42,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-15 13:54:42,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:54:43,281 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:54:43,281 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:54:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:43,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:54:43,511 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-03-15 13:54:43,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-03-15 13:54:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:43,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367427141] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:54:43,650 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:54:43,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 30 [2022-03-15 13:54:43,650 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159713398] [2022-03-15 13:54:43,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:54:43,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-15 13:54:43,650 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:43,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-15 13:54:43,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2022-03-15 13:54:43,651 INFO L87 Difference]: Start difference. First operand 16569 states and 47525 transitions. Second operand has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:44,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:44,904 INFO L93 Difference]: Finished difference Result 35449 states and 102230 transitions. [2022-03-15 13:54:44,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 13:54:44,904 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:44,985 INFO L225 Difference]: With dead ends: 35449 [2022-03-15 13:54:44,985 INFO L226 Difference]: Without dead ends: 35449 [2022-03-15 13:54:44,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=783, Invalid=2999, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 13:54:44,986 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 1938 mSDsluCounter, 6863 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1938 SdHoareTripleChecker+Valid, 7164 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:44,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1938 Valid, 7164 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1558 Invalid, 0 Unknown, 290 Unchecked, 0.5s Time] [2022-03-15 13:54:45,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35449 states. [2022-03-15 13:54:45,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35449 to 17289. [2022-03-15 13:54:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17289 states, 17288 states have (on average 2.8649352151781584) internal successors, (49529), 17288 states have internal predecessors, (49529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:45,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17289 states to 17289 states and 49529 transitions. [2022-03-15 13:54:45,399 INFO L78 Accepts]: Start accepts. Automaton has 17289 states and 49529 transitions. Word has length 177 [2022-03-15 13:54:45,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:45,399 INFO L470 AbstractCegarLoop]: Abstraction has 17289 states and 49529 transitions. [2022-03-15 13:54:45,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:45,399 INFO L276 IsEmpty]: Start isEmpty. Operand 17289 states and 49529 transitions. [2022-03-15 13:54:45,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:45,425 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:45,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:45,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 13:54:45,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:54:45,643 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:45,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:45,643 INFO L85 PathProgramCache]: Analyzing trace with hash -219886214, now seen corresponding path program 13 times [2022-03-15 13:54:45,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:45,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464356565] [2022-03-15 13:54:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:45,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:45,990 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:45,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464356565] [2022-03-15 13:54:45,990 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464356565] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:45,990 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:45,990 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:54:45,990 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212408490] [2022-03-15 13:54:45,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:45,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:54:45,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:45,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:54:45,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:54:45,991 INFO L87 Difference]: Start difference. First operand 17289 states and 49529 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:46,882 INFO L93 Difference]: Finished difference Result 30015 states and 86391 transitions. [2022-03-15 13:54:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 13:54:46,882 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:46,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:46,945 INFO L225 Difference]: With dead ends: 30015 [2022-03-15 13:54:46,945 INFO L226 Difference]: Without dead ends: 30015 [2022-03-15 13:54:46,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:54:46,945 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 1046 mSDsluCounter, 4259 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 4578 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:46,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1046 Valid, 4578 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:54:46,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30015 states. [2022-03-15 13:54:47,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30015 to 17305. [2022-03-15 13:54:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17305 states, 17304 states have (on average 2.8657535829865926) internal successors, (49589), 17304 states have internal predecessors, (49589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:47,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17305 states to 17305 states and 49589 transitions. [2022-03-15 13:54:47,325 INFO L78 Accepts]: Start accepts. Automaton has 17305 states and 49589 transitions. Word has length 177 [2022-03-15 13:54:47,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:47,325 INFO L470 AbstractCegarLoop]: Abstraction has 17305 states and 49589 transitions. [2022-03-15 13:54:47,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:47,325 INFO L276 IsEmpty]: Start isEmpty. Operand 17305 states and 49589 transitions. [2022-03-15 13:54:47,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:47,350 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:47,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:47,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-03-15 13:54:47,351 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:47,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:47,351 INFO L85 PathProgramCache]: Analyzing trace with hash 652336600, now seen corresponding path program 14 times [2022-03-15 13:54:47,351 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:47,351 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672408179] [2022-03-15 13:54:47,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:47,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:47,650 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:47,650 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672408179] [2022-03-15 13:54:47,650 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672408179] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:47,650 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:47,650 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:54:47,650 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937013555] [2022-03-15 13:54:47,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:47,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:54:47,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:47,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:54:47,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:54:47,651 INFO L87 Difference]: Start difference. First operand 17305 states and 49589 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:48,363 INFO L93 Difference]: Finished difference Result 26780 states and 77304 transitions. [2022-03-15 13:54:48,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:54:48,363 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:48,423 INFO L225 Difference]: With dead ends: 26780 [2022-03-15 13:54:48,423 INFO L226 Difference]: Without dead ends: 26780 [2022-03-15 13:54:48,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=338, Invalid=1144, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 13:54:48,423 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 1057 mSDsluCounter, 3280 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:48,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 3581 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:54:48,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26780 states. [2022-03-15 13:54:48,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26780 to 17313. [2022-03-15 13:54:48,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17313 states, 17312 states have (on average 2.866162199630314) internal successors, (49619), 17312 states have internal predecessors, (49619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:48,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17313 states to 17313 states and 49619 transitions. [2022-03-15 13:54:48,793 INFO L78 Accepts]: Start accepts. Automaton has 17313 states and 49619 transitions. Word has length 177 [2022-03-15 13:54:48,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:48,793 INFO L470 AbstractCegarLoop]: Abstraction has 17313 states and 49619 transitions. [2022-03-15 13:54:48,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:48,793 INFO L276 IsEmpty]: Start isEmpty. Operand 17313 states and 49619 transitions. [2022-03-15 13:54:48,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:48,819 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:48,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:48,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-03-15 13:54:48,819 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:48,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:48,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1447008256, now seen corresponding path program 16 times [2022-03-15 13:54:48,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:48,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810076496] [2022-03-15 13:54:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:48,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:49,096 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:49,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810076496] [2022-03-15 13:54:49,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810076496] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:49,096 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:49,096 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:54:49,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156986944] [2022-03-15 13:54:49,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:49,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:54:49,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:49,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:54:49,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:54:49,097 INFO L87 Difference]: Start difference. First operand 17313 states and 49619 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:49,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:49,706 INFO L93 Difference]: Finished difference Result 26444 states and 76272 transitions. [2022-03-15 13:54:49,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:54:49,706 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:49,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:49,769 INFO L225 Difference]: With dead ends: 26444 [2022-03-15 13:54:49,769 INFO L226 Difference]: Without dead ends: 26444 [2022-03-15 13:54:49,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:54:49,770 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 987 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 3148 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:49,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [987 Valid, 3148 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:54:49,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26444 states. [2022-03-15 13:54:50,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26444 to 17345. [2022-03-15 13:54:50,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17345 states, 17344 states have (on average 2.8659478782287824) internal successors, (49707), 17344 states have internal predecessors, (49707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:50,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17345 states to 17345 states and 49707 transitions. [2022-03-15 13:54:50,202 INFO L78 Accepts]: Start accepts. Automaton has 17345 states and 49707 transitions. Word has length 177 [2022-03-15 13:54:50,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:50,202 INFO L470 AbstractCegarLoop]: Abstraction has 17345 states and 49707 transitions. [2022-03-15 13:54:50,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:50,202 INFO L276 IsEmpty]: Start isEmpty. Operand 17345 states and 49707 transitions. [2022-03-15 13:54:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:50,229 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:50,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:50,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-03-15 13:54:50,230 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:50,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:50,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1040334356, now seen corresponding path program 17 times [2022-03-15 13:54:50,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:50,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778310439] [2022-03-15 13:54:50,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:50,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:50,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:50,586 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:50,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778310439] [2022-03-15 13:54:50,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778310439] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:54:50,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457224825] [2022-03-15 13:54:50,586 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 13:54:50,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:54:50,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:54:50,587 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:54:50,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 13:54:50,731 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 13:54:50,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:54:50,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-15 13:54:50,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:54:51,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:54:51,409 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:54:51,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:54:51,778 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:54:51,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:54:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:54:51,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:54:52,089 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1614 (Array Int Int)) (~get1~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1614))) (let ((.cse0 (select .cse3 c_~get2~0.base)) (.cse1 (select .cse3 ~get1~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select .cse1 c_~get1~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse2)) (select .cse1 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-15 13:54:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-15 13:54:52,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457224825] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:54:52,190 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:54:52,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 47 [2022-03-15 13:54:52,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804575168] [2022-03-15 13:54:52,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:54:52,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 13:54:52,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:52,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 13:54:52,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1869, Unknown=1, NotChecked=88, Total=2162 [2022-03-15 13:54:52,192 INFO L87 Difference]: Start difference. First operand 17345 states and 49707 transitions. Second operand has 47 states, 47 states have (on average 7.9787234042553195) internal successors, (375), 47 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:54,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:54,882 INFO L93 Difference]: Finished difference Result 30265 states and 87287 transitions. [2022-03-15 13:54:54,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-15 13:54:54,882 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 7.9787234042553195) internal successors, (375), 47 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:54,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:54,946 INFO L225 Difference]: With dead ends: 30265 [2022-03-15 13:54:54,946 INFO L226 Difference]: Without dead ends: 30265 [2022-03-15 13:54:54,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 343 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 2076 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1852, Invalid=7081, Unknown=1, NotChecked=186, Total=9120 [2022-03-15 13:54:54,947 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 2908 mSDsluCounter, 5413 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 5723 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 893 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:54,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2908 Valid, 5723 Invalid, 2909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1963 Invalid, 0 Unknown, 893 Unchecked, 0.7s Time] [2022-03-15 13:54:54,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30265 states. [2022-03-15 13:54:55,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30265 to 17327. [2022-03-15 13:54:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17327 states, 17326 states have (on average 2.865808611335565) internal successors, (49653), 17326 states have internal predecessors, (49653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17327 states to 17327 states and 49653 transitions. [2022-03-15 13:54:55,331 INFO L78 Accepts]: Start accepts. Automaton has 17327 states and 49653 transitions. Word has length 177 [2022-03-15 13:54:55,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:55,331 INFO L470 AbstractCegarLoop]: Abstraction has 17327 states and 49653 transitions. [2022-03-15 13:54:55,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 7.9787234042553195) internal successors, (375), 47 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:55,331 INFO L276 IsEmpty]: Start isEmpty. Operand 17327 states and 49653 transitions. [2022-03-15 13:54:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:55,358 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:55,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:55,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 13:54:55,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:54:55,576 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:55,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:55,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1804088130, now seen corresponding path program 15 times [2022-03-15 13:54:55,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:55,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025252707] [2022-03-15 13:54:55,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:55,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:55,906 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:55,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025252707] [2022-03-15 13:54:55,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025252707] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:55,906 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:55,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:54:55,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009611643] [2022-03-15 13:54:55,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:55,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:54:55,907 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:55,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:54:55,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:54:55,907 INFO L87 Difference]: Start difference. First operand 17327 states and 49653 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:56,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:56,545 INFO L93 Difference]: Finished difference Result 26344 states and 75932 transitions. [2022-03-15 13:54:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 13:54:56,545 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:56,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:56,605 INFO L225 Difference]: With dead ends: 26344 [2022-03-15 13:54:56,606 INFO L226 Difference]: Without dead ends: 26344 [2022-03-15 13:54:56,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 13:54:56,606 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 974 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:56,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 2748 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:54:56,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26344 states. [2022-03-15 13:54:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26344 to 17343. [2022-03-15 13:54:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17343 states, 17342 states have (on average 2.8666243801176337) internal successors, (49713), 17342 states have internal predecessors, (49713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17343 states to 17343 states and 49713 transitions. [2022-03-15 13:54:57,082 INFO L78 Accepts]: Start accepts. Automaton has 17343 states and 49713 transitions. Word has length 177 [2022-03-15 13:54:57,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:57,082 INFO L470 AbstractCegarLoop]: Abstraction has 17343 states and 49713 transitions. [2022-03-15 13:54:57,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 17343 states and 49713 transitions. [2022-03-15 13:54:57,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:57,106 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:57,107 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:57,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-03-15 13:54:57,107 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:57,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:57,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1438045892, now seen corresponding path program 18 times [2022-03-15 13:54:57,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:57,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013891083] [2022-03-15 13:54:57,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:57,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:57,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:57,479 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:57,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013891083] [2022-03-15 13:54:57,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013891083] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:57,480 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:57,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:54:57,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097174290] [2022-03-15 13:54:57,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:57,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:54:57,480 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:57,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:54:57,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:54:57,480 INFO L87 Difference]: Start difference. First operand 17343 states and 49713 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:58,109 INFO L93 Difference]: Finished difference Result 26188 states and 75512 transitions. [2022-03-15 13:54:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 13:54:58,109 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:58,165 INFO L225 Difference]: With dead ends: 26188 [2022-03-15 13:54:58,165 INFO L226 Difference]: Without dead ends: 26188 [2022-03-15 13:54:58,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 13:54:58,165 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 823 mSDsluCounter, 2892 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:58,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 3200 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:54:58,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26188 states. [2022-03-15 13:54:58,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26188 to 17351. [2022-03-15 13:54:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17351 states, 17350 states have (on average 2.86657060518732) internal successors, (49735), 17350 states have internal predecessors, (49735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:58,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17351 states to 17351 states and 49735 transitions. [2022-03-15 13:54:58,530 INFO L78 Accepts]: Start accepts. Automaton has 17351 states and 49735 transitions. Word has length 177 [2022-03-15 13:54:58,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:58,530 INFO L470 AbstractCegarLoop]: Abstraction has 17351 states and 49735 transitions. [2022-03-15 13:54:58,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:58,530 INFO L276 IsEmpty]: Start isEmpty. Operand 17351 states and 49735 transitions. [2022-03-15 13:54:58,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:58,557 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:58,557 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:58,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-03-15 13:54:58,558 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:58,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:58,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1165514494, now seen corresponding path program 19 times [2022-03-15 13:54:58,558 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:58,558 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315901264] [2022-03-15 13:54:58,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:58,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:54:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:54:58,902 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:54:58,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315901264] [2022-03-15 13:54:58,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315901264] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:54:58,902 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:54:58,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:54:58,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009283575] [2022-03-15 13:54:58,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:54:58,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:54:58,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:54:58,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:54:58,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:54:58,903 INFO L87 Difference]: Start difference. First operand 17351 states and 49735 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:59,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:54:59,402 INFO L93 Difference]: Finished difference Result 25888 states and 74536 transitions. [2022-03-15 13:54:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:54:59,403 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:54:59,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:54:59,460 INFO L225 Difference]: With dead ends: 25888 [2022-03-15 13:54:59,460 INFO L226 Difference]: Without dead ends: 25888 [2022-03-15 13:54:59,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=352, Invalid=1130, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 13:54:59,460 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 1123 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:54:59,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 3143 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:54:59,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25888 states. [2022-03-15 13:54:59,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25888 to 17343. [2022-03-15 13:54:59,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17343 states, 17342 states have (on average 2.8666243801176337) internal successors, (49713), 17342 states have internal predecessors, (49713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17343 states to 17343 states and 49713 transitions. [2022-03-15 13:54:59,878 INFO L78 Accepts]: Start accepts. Automaton has 17343 states and 49713 transitions. Word has length 177 [2022-03-15 13:54:59,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:54:59,878 INFO L470 AbstractCegarLoop]: Abstraction has 17343 states and 49713 transitions. [2022-03-15 13:54:59,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:54:59,879 INFO L276 IsEmpty]: Start isEmpty. Operand 17343 states and 49713 transitions. [2022-03-15 13:54:59,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:54:59,903 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:54:59,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:54:59,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-03-15 13:54:59,904 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:54:59,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:54:59,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1629089236, now seen corresponding path program 13 times [2022-03-15 13:54:59,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:54:59,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849132724] [2022-03-15 13:54:59,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:54:59,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:54:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:00,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:00,154 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:00,154 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849132724] [2022-03-15 13:55:00,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849132724] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:00,154 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:00,154 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:55:00,154 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997666321] [2022-03-15 13:55:00,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:00,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:55:00,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:00,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:55:00,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:55:00,155 INFO L87 Difference]: Start difference. First operand 17343 states and 49713 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:00,612 INFO L93 Difference]: Finished difference Result 25944 states and 74674 transitions. [2022-03-15 13:55:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:55:00,612 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:00,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:00,668 INFO L225 Difference]: With dead ends: 25944 [2022-03-15 13:55:00,668 INFO L226 Difference]: Without dead ends: 25944 [2022-03-15 13:55:00,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:55:00,669 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 1160 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:00,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 2748 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:55:00,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25944 states. [2022-03-15 13:55:00,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25944 to 17357. [2022-03-15 13:55:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17357 states, 17356 states have (on average 2.8655796266420834) internal successors, (49735), 17356 states have internal predecessors, (49735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:01,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17357 states to 17357 states and 49735 transitions. [2022-03-15 13:55:01,035 INFO L78 Accepts]: Start accepts. Automaton has 17357 states and 49735 transitions. Word has length 177 [2022-03-15 13:55:01,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:01,035 INFO L470 AbstractCegarLoop]: Abstraction has 17357 states and 49735 transitions. [2022-03-15 13:55:01,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:01,035 INFO L276 IsEmpty]: Start isEmpty. Operand 17357 states and 49735 transitions. [2022-03-15 13:55:01,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:01,064 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:01,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:01,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-03-15 13:55:01,064 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:01,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:01,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1611715648, now seen corresponding path program 20 times [2022-03-15 13:55:01,065 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:01,065 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199894473] [2022-03-15 13:55:01,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:01,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:01,292 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:01,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199894473] [2022-03-15 13:55:01,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199894473] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:01,292 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:01,292 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:55:01,292 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982991637] [2022-03-15 13:55:01,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:01,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:55:01,293 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:01,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:55:01,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:55:01,293 INFO L87 Difference]: Start difference. First operand 17357 states and 49735 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:01,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:01,902 INFO L93 Difference]: Finished difference Result 26310 states and 75678 transitions. [2022-03-15 13:55:01,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 13:55:01,902 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:01,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:01,961 INFO L225 Difference]: With dead ends: 26310 [2022-03-15 13:55:01,961 INFO L226 Difference]: Without dead ends: 26310 [2022-03-15 13:55:01,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 13:55:01,961 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 946 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:01,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 3370 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:55:01,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26310 states. [2022-03-15 13:55:02,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26310 to 17413. [2022-03-15 13:55:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17413 states, 17412 states have (on average 2.865552492533885) internal successors, (49895), 17412 states have internal predecessors, (49895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17413 states to 17413 states and 49895 transitions. [2022-03-15 13:55:02,298 INFO L78 Accepts]: Start accepts. Automaton has 17413 states and 49895 transitions. Word has length 177 [2022-03-15 13:55:02,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:02,298 INFO L470 AbstractCegarLoop]: Abstraction has 17413 states and 49895 transitions. [2022-03-15 13:55:02,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:02,299 INFO L276 IsEmpty]: Start isEmpty. Operand 17413 states and 49895 transitions. [2022-03-15 13:55:02,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:02,326 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:02,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:02,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-03-15 13:55:02,327 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:02,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2018389548, now seen corresponding path program 21 times [2022-03-15 13:55:02,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:02,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650646998] [2022-03-15 13:55:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:02,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:02,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:02,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650646998] [2022-03-15 13:55:02,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650646998] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:55:02,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525220873] [2022-03-15 13:55:02,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 13:55:02,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:55:02,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:55:02,553 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:55:02,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 13:55:02,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 13:55:02,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:55:02,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-15 13:55:02,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:55:02,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:55:02,737 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 13:55:02,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-15 13:55:02,812 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-03-15 13:55:02,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-03-15 13:55:02,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:55:03,074 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-03-15 13:55:03,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-03-15 13:55:03,140 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:55:03,227 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:55:03,274 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:55:03,574 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-15 13:55:03,575 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-15 13:55:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:55:03,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:55:04,010 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1734 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1734))) (let ((.cse2 (select .cse3 c_~get1~0.base)) (.cse0 (select .cse3 ~get2~0.base))) (or (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (< (select .cse0 (+ c_~get2~0.offset .cse1)) (select .cse2 (+ c_~get1~0.offset .cse1)))) (<= (select .cse2 c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-15 13:55:04,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-15 13:55:04,090 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525220873] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:55:04,090 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:55:04,090 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 12] total 56 [2022-03-15 13:55:04,090 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684687399] [2022-03-15 13:55:04,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:55:04,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-15 13:55:04,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:04,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-15 13:55:04,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2738, Unknown=1, NotChecked=106, Total=3080 [2022-03-15 13:55:04,092 INFO L87 Difference]: Start difference. First operand 17413 states and 49895 transitions. Second operand has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:07,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:07,769 INFO L93 Difference]: Finished difference Result 44581 states and 127446 transitions. [2022-03-15 13:55:07,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-15 13:55:07,769 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:07,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:07,868 INFO L225 Difference]: With dead ends: 44581 [2022-03-15 13:55:07,868 INFO L226 Difference]: Without dead ends: 44581 [2022-03-15 13:55:07,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 327 SyntacticMatches, 2 SemanticMatches, 116 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3199 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2432, Invalid=11143, Unknown=1, NotChecked=230, Total=13806 [2022-03-15 13:55:07,869 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 3664 mSDsluCounter, 12016 mSDsCounter, 0 mSdLazyCounter, 3370 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3664 SdHoareTripleChecker+Valid, 12326 SdHoareTripleChecker+Invalid, 5433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2009 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:07,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3664 Valid, 12326 Invalid, 5433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3370 Invalid, 0 Unknown, 2009 Unchecked, 1.0s Time] [2022-03-15 13:55:07,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44581 states. [2022-03-15 13:55:08,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44581 to 19551. [2022-03-15 13:55:08,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19551 states, 19550 states have (on average 2.870230179028133) internal successors, (56113), 19550 states have internal predecessors, (56113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:08,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19551 states to 19551 states and 56113 transitions. [2022-03-15 13:55:08,430 INFO L78 Accepts]: Start accepts. Automaton has 19551 states and 56113 transitions. Word has length 177 [2022-03-15 13:55:08,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:08,431 INFO L470 AbstractCegarLoop]: Abstraction has 19551 states and 56113 transitions. [2022-03-15 13:55:08,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:08,431 INFO L276 IsEmpty]: Start isEmpty. Operand 19551 states and 56113 transitions. [2022-03-15 13:55:08,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:08,460 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:08,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:08,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 13:55:08,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:55:08,679 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:08,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:08,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1865483718, now seen corresponding path program 15 times [2022-03-15 13:55:08,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:08,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949639459] [2022-03-15 13:55:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:08,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:08,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:08,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:08,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949639459] [2022-03-15 13:55:08,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949639459] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:55:08,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708635454] [2022-03-15 13:55:08,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 13:55:08,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:55:08,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:55:08,941 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:55:08,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 13:55:09,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 13:55:09,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:55:09,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-15 13:55:09,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:55:09,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:55:09,119 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 13:55:09,119 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-15 13:55:09,223 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-03-15 13:55:09,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-03-15 13:55:09,332 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:55:09,636 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-03-15 13:55:09,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2022-03-15 13:55:09,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:55:09,871 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:55:09,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:55:10,161 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-15 13:55:10,161 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:55:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:55:10,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:55:10,485 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1774 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1774))) (let ((.cse0 (select .cse3 ~get2~0.base)) (.cse1 (select .cse3 c_~get1~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select .cse1 c_~get1~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse2)) (select .cse1 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-15 13:55:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-15 13:55:10,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708635454] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:55:10,595 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:55:10,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-03-15 13:55:10,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361728818] [2022-03-15 13:55:10,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:55:10,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-15 13:55:10,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:10,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-15 13:55:10,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2157, Unknown=1, NotChecked=94, Total=2450 [2022-03-15 13:55:10,597 INFO L87 Difference]: Start difference. First operand 19551 states and 56113 transitions. Second operand has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:14,066 INFO L93 Difference]: Finished difference Result 43186 states and 124503 transitions. [2022-03-15 13:55:14,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-15 13:55:14,067 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:14,160 INFO L225 Difference]: With dead ends: 43186 [2022-03-15 13:55:14,160 INFO L226 Difference]: Without dead ends: 43186 [2022-03-15 13:55:14,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 335 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2275 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2108, Invalid=8401, Unknown=1, NotChecked=202, Total=10712 [2022-03-15 13:55:14,161 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 3282 mSDsluCounter, 9717 mSDsCounter, 0 mSdLazyCounter, 2797 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3282 SdHoareTripleChecker+Valid, 9907 SdHoareTripleChecker+Invalid, 4282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1428 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:14,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3282 Valid, 9907 Invalid, 4282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2797 Invalid, 0 Unknown, 1428 Unchecked, 1.1s Time] [2022-03-15 13:55:14,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43186 states. [2022-03-15 13:55:14,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43186 to 17743. [2022-03-15 13:55:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17743 states, 17742 states have (on average 2.8531732611881413) internal successors, (50621), 17742 states have internal predecessors, (50621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:14,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17743 states to 17743 states and 50621 transitions. [2022-03-15 13:55:14,605 INFO L78 Accepts]: Start accepts. Automaton has 17743 states and 50621 transitions. Word has length 177 [2022-03-15 13:55:14,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:14,605 INFO L470 AbstractCegarLoop]: Abstraction has 17743 states and 50621 transitions. [2022-03-15 13:55:14,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.64) internal successors, (382), 50 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:14,606 INFO L276 IsEmpty]: Start isEmpty. Operand 17743 states and 50621 transitions. [2022-03-15 13:55:14,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:14,630 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:14,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:14,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 13:55:14,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:55:14,843 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:14,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:14,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1914474352, now seen corresponding path program 16 times [2022-03-15 13:55:14,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:14,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197456117] [2022-03-15 13:55:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:14,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:15,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:15,191 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:15,191 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197456117] [2022-03-15 13:55:15,191 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197456117] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:15,191 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:15,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:55:15,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078814121] [2022-03-15 13:55:15,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:15,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:55:15,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:15,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:55:15,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:55:15,192 INFO L87 Difference]: Start difference. First operand 17743 states and 50621 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:15,982 INFO L93 Difference]: Finished difference Result 30803 states and 88387 transitions. [2022-03-15 13:55:15,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:55:15,982 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:15,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:16,040 INFO L225 Difference]: With dead ends: 30803 [2022-03-15 13:55:16,040 INFO L226 Difference]: Without dead ends: 30803 [2022-03-15 13:55:16,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=429, Invalid=1377, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 13:55:16,041 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 1092 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 3859 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:16,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 3859 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:55:16,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30803 states. [2022-03-15 13:55:16,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30803 to 17775. [2022-03-15 13:55:16,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17775 states, 17774 states have (on average 2.8538877011364914) internal successors, (50725), 17774 states have internal predecessors, (50725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:16,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17775 states to 17775 states and 50725 transitions. [2022-03-15 13:55:16,395 INFO L78 Accepts]: Start accepts. Automaton has 17775 states and 50725 transitions. Word has length 177 [2022-03-15 13:55:16,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:16,395 INFO L470 AbstractCegarLoop]: Abstraction has 17775 states and 50725 transitions. [2022-03-15 13:55:16,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:16,395 INFO L276 IsEmpty]: Start isEmpty. Operand 17775 states and 50725 transitions. [2022-03-15 13:55:16,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:16,422 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:16,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:16,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-03-15 13:55:16,423 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:16,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:16,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1042251538, now seen corresponding path program 17 times [2022-03-15 13:55:16,423 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:16,423 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255451021] [2022-03-15 13:55:16,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:16,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:16,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:16,740 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:16,740 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255451021] [2022-03-15 13:55:16,740 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255451021] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:16,740 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:16,740 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:55:16,740 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834463559] [2022-03-15 13:55:16,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:16,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:55:16,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:16,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:55:16,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:55:16,741 INFO L87 Difference]: Start difference. First operand 17775 states and 50725 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:17,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:17,484 INFO L93 Difference]: Finished difference Result 27832 states and 80090 transitions. [2022-03-15 13:55:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:55:17,484 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:17,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:17,545 INFO L225 Difference]: With dead ends: 27832 [2022-03-15 13:55:17,546 INFO L226 Difference]: Without dead ends: 27832 [2022-03-15 13:55:17,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1252, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 13:55:17,547 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1119 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 3420 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:17,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 3420 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:55:17,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27832 states. [2022-03-15 13:55:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27832 to 17783. [2022-03-15 13:55:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17783 states, 17782 states have (on average 2.8542908559217186) internal successors, (50755), 17782 states have internal predecessors, (50755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:17,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17783 states to 17783 states and 50755 transitions. [2022-03-15 13:55:17,939 INFO L78 Accepts]: Start accepts. Automaton has 17783 states and 50755 transitions. Word has length 177 [2022-03-15 13:55:17,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:17,940 INFO L470 AbstractCegarLoop]: Abstraction has 17783 states and 50755 transitions. [2022-03-15 13:55:17,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:17,940 INFO L276 IsEmpty]: Start isEmpty. Operand 17783 states and 50755 transitions. [2022-03-15 13:55:17,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:17,969 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:17,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:17,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-03-15 13:55:17,969 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:17,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:17,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1153370902, now seen corresponding path program 22 times [2022-03-15 13:55:17,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:17,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342489971] [2022-03-15 13:55:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:17,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:18,415 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:18,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342489971] [2022-03-15 13:55:18,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342489971] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:18,415 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:18,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:55:18,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126347863] [2022-03-15 13:55:18,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:18,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:55:18,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:18,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:55:18,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:55:18,416 INFO L87 Difference]: Start difference. First operand 17783 states and 50755 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:19,196 INFO L93 Difference]: Finished difference Result 27496 states and 79058 transitions. [2022-03-15 13:55:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:55:19,196 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:19,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:19,261 INFO L225 Difference]: With dead ends: 27496 [2022-03-15 13:55:19,261 INFO L226 Difference]: Without dead ends: 27496 [2022-03-15 13:55:19,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 13:55:19,261 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1032 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 3265 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:19,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 3265 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:55:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27496 states. [2022-03-15 13:55:19,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27496 to 17815. [2022-03-15 13:55:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17815 states, 17814 states have (on average 2.8541035140900415) internal successors, (50843), 17814 states have internal predecessors, (50843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:19,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17815 states to 17815 states and 50843 transitions. [2022-03-15 13:55:19,697 INFO L78 Accepts]: Start accepts. Automaton has 17815 states and 50843 transitions. Word has length 177 [2022-03-15 13:55:19,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:19,698 INFO L470 AbstractCegarLoop]: Abstraction has 17815 states and 50843 transitions. [2022-03-15 13:55:19,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:19,698 INFO L276 IsEmpty]: Start isEmpty. Operand 17815 states and 50843 transitions. [2022-03-15 13:55:19,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:19,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:19,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:19,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-03-15 13:55:19,725 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:19,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:19,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1560044802, now seen corresponding path program 23 times [2022-03-15 13:55:19,725 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:19,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194021674] [2022-03-15 13:55:19,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:19,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:20,075 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:20,075 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194021674] [2022-03-15 13:55:20,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194021674] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:55:20,076 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144518887] [2022-03-15 13:55:20,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 13:55:20,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:55:20,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:55:20,077 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:55:20,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 13:55:20,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 13:55:20,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:55:20,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 54 conjunts are in the unsatisfiable core [2022-03-15 13:55:20,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:55:20,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:55:20,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:55:20,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:55:21,008 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:55:21,008 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:55:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:55:21,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:55:21,208 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_1858 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1858))) (let ((.cse2 (select .cse3 c_~get2~0.base)) (.cse0 (select .cse3 ~get1~0.base))) (or (not (let ((.cse1 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get1~0.offset .cse1)) (select .cse2 (+ c_~get2~0.offset .cse1))))) (= (select .cse2 c_~get2~0.offset) (select .cse0 c_~get1~0.offset)))))) is different from false [2022-03-15 13:55:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-15 13:55:21,290 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144518887] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:55:21,290 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:55:21,290 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 46 [2022-03-15 13:55:21,291 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786642400] [2022-03-15 13:55:21,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:55:21,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-15 13:55:21,292 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:21,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-15 13:55:21,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1786, Unknown=1, NotChecked=86, Total=2070 [2022-03-15 13:55:21,293 INFO L87 Difference]: Start difference. First operand 17815 states and 50843 transitions. Second operand has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:24,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:24,001 INFO L93 Difference]: Finished difference Result 32411 states and 93213 transitions. [2022-03-15 13:55:24,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-03-15 13:55:24,001 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:24,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:24,079 INFO L225 Difference]: With dead ends: 32411 [2022-03-15 13:55:24,079 INFO L226 Difference]: Without dead ends: 32411 [2022-03-15 13:55:24,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 338 SyntacticMatches, 6 SemanticMatches, 100 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 2480 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2116, Invalid=7987, Unknown=1, NotChecked=198, Total=10302 [2022-03-15 13:55:24,081 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 2637 mSDsluCounter, 7657 mSDsCounter, 0 mSdLazyCounter, 2664 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2637 SdHoareTripleChecker+Valid, 7936 SdHoareTripleChecker+Invalid, 3465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 754 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:24,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2637 Valid, 7936 Invalid, 3465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2664 Invalid, 0 Unknown, 754 Unchecked, 0.8s Time] [2022-03-15 13:55:24,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32411 states. [2022-03-15 13:55:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32411 to 17783. [2022-03-15 13:55:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17783 states, 17782 states have (on average 2.8542908559217186) internal successors, (50755), 17782 states have internal predecessors, (50755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:24,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17783 states to 17783 states and 50755 transitions. [2022-03-15 13:55:24,491 INFO L78 Accepts]: Start accepts. Automaton has 17783 states and 50755 transitions. Word has length 177 [2022-03-15 13:55:24,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:24,491 INFO L470 AbstractCegarLoop]: Abstraction has 17783 states and 50755 transitions. [2022-03-15 13:55:24,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 8.108695652173912) internal successors, (373), 46 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:24,491 INFO L276 IsEmpty]: Start isEmpty. Operand 17783 states and 50755 transitions. [2022-03-15 13:55:24,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:24,519 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:24,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:24,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 13:55:24,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-03-15 13:55:24,731 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:24,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:24,732 INFO L85 PathProgramCache]: Analyzing trace with hash 796291028, now seen corresponding path program 18 times [2022-03-15 13:55:24,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:24,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565533120] [2022-03-15 13:55:24,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:24,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:25,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:25,124 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565533120] [2022-03-15 13:55:25,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565533120] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:25,124 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:25,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:55:25,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783696665] [2022-03-15 13:55:25,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:25,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:55:25,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:25,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:55:25,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:55:25,125 INFO L87 Difference]: Start difference. First operand 17783 states and 50755 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:25,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:25,820 INFO L93 Difference]: Finished difference Result 27398 states and 78728 transitions. [2022-03-15 13:55:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:55:25,821 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:25,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:25,884 INFO L225 Difference]: With dead ends: 27398 [2022-03-15 13:55:25,884 INFO L226 Difference]: Without dead ends: 27398 [2022-03-15 13:55:25,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=1081, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:55:25,884 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 946 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:25,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 3495 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:55:25,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27398 states. [2022-03-15 13:55:26,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27398 to 17799. [2022-03-15 13:55:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17799 states, 17798 states have (on average 2.855096078211035) internal successors, (50815), 17798 states have internal predecessors, (50815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:26,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17799 states to 17799 states and 50815 transitions. [2022-03-15 13:55:26,267 INFO L78 Accepts]: Start accepts. Automaton has 17799 states and 50815 transitions. Word has length 177 [2022-03-15 13:55:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:26,268 INFO L470 AbstractCegarLoop]: Abstraction has 17799 states and 50815 transitions. [2022-03-15 13:55:26,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:26,268 INFO L276 IsEmpty]: Start isEmpty. Operand 17799 states and 50815 transitions. [2022-03-15 13:55:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:26,296 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:26,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:26,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-03-15 13:55:26,296 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:26,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:26,296 INFO L85 PathProgramCache]: Analyzing trace with hash -256542246, now seen corresponding path program 24 times [2022-03-15 13:55:26,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:26,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273686174] [2022-03-15 13:55:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:26,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:26,655 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:26,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273686174] [2022-03-15 13:55:26,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273686174] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:26,655 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:26,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:55:26,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770113800] [2022-03-15 13:55:26,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:26,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:55:26,655 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:26,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:55:26,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:55:26,656 INFO L87 Difference]: Start difference. First operand 17799 states and 50815 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:27,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:27,145 INFO L93 Difference]: Finished difference Result 27368 states and 78650 transitions. [2022-03-15 13:55:27,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:55:27,146 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:27,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:27,208 INFO L225 Difference]: With dead ends: 27368 [2022-03-15 13:55:27,208 INFO L226 Difference]: Without dead ends: 27368 [2022-03-15 13:55:27,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=319, Invalid=1013, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:55:27,208 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 817 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:27,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 3049 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:55:27,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27368 states. [2022-03-15 13:55:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27368 to 17807. [2022-03-15 13:55:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17807 states, 17806 states have (on average 2.8550488599348536) internal successors, (50837), 17806 states have internal predecessors, (50837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:27,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17807 states to 17807 states and 50837 transitions. [2022-03-15 13:55:27,578 INFO L78 Accepts]: Start accepts. Automaton has 17807 states and 50837 transitions. Word has length 177 [2022-03-15 13:55:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:27,578 INFO L470 AbstractCegarLoop]: Abstraction has 17807 states and 50837 transitions. [2022-03-15 13:55:27,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 17807 states and 50837 transitions. [2022-03-15 13:55:27,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:27,604 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:27,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:27,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-03-15 13:55:27,605 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:27,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:27,605 INFO L85 PathProgramCache]: Analyzing trace with hash -529073644, now seen corresponding path program 25 times [2022-03-15 13:55:27,605 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:27,605 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807007190] [2022-03-15 13:55:27,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:27,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:27,918 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:27,918 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807007190] [2022-03-15 13:55:27,918 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807007190] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:27,918 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:27,918 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:55:27,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306879115] [2022-03-15 13:55:27,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:27,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:55:27,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:27,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:55:27,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:55:27,918 INFO L87 Difference]: Start difference. First operand 17807 states and 50837 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:28,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:28,562 INFO L93 Difference]: Finished difference Result 27198 states and 78180 transitions. [2022-03-15 13:55:28,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 13:55:28,562 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:28,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:28,625 INFO L225 Difference]: With dead ends: 27198 [2022-03-15 13:55:28,626 INFO L226 Difference]: Without dead ends: 27198 [2022-03-15 13:55:28,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=376, Invalid=1184, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 13:55:28,626 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1446 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:28,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 2929 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:55:28,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27198 states. [2022-03-15 13:55:28,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27198 to 17799. [2022-03-15 13:55:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17799 states, 17798 states have (on average 2.855096078211035) internal successors, (50815), 17798 states have internal predecessors, (50815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:28,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17799 states to 17799 states and 50815 transitions. [2022-03-15 13:55:28,997 INFO L78 Accepts]: Start accepts. Automaton has 17799 states and 50815 transitions. Word has length 177 [2022-03-15 13:55:28,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:28,997 INFO L470 AbstractCegarLoop]: Abstraction has 17799 states and 50815 transitions. [2022-03-15 13:55:28,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:28,998 INFO L276 IsEmpty]: Start isEmpty. Operand 17799 states and 50815 transitions. [2022-03-15 13:55:29,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:29,024 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:29,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:29,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-03-15 13:55:29,025 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:29,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:29,025 INFO L85 PathProgramCache]: Analyzing trace with hash -65498902, now seen corresponding path program 14 times [2022-03-15 13:55:29,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:29,025 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744881804] [2022-03-15 13:55:29,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:29,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:29,432 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:29,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744881804] [2022-03-15 13:55:29,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744881804] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:29,432 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:29,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:55:29,433 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793788395] [2022-03-15 13:55:29,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:29,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:55:29,433 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:29,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:55:29,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:55:29,433 INFO L87 Difference]: Start difference. First operand 17799 states and 50815 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:30,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:30,161 INFO L93 Difference]: Finished difference Result 27318 states and 78518 transitions. [2022-03-15 13:55:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 13:55:30,161 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:30,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:30,217 INFO L225 Difference]: With dead ends: 27318 [2022-03-15 13:55:30,217 INFO L226 Difference]: Without dead ends: 27318 [2022-03-15 13:55:30,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=369, Invalid=1113, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 13:55:30,218 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1178 mSDsluCounter, 3783 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 4086 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:30,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1178 Valid, 4086 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:55:30,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27318 states. [2022-03-15 13:55:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27318 to 17807. [2022-03-15 13:55:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17807 states, 17806 states have (on average 2.853700999663035) internal successors, (50813), 17806 states have internal predecessors, (50813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:30,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17807 states to 17807 states and 50813 transitions. [2022-03-15 13:55:30,618 INFO L78 Accepts]: Start accepts. Automaton has 17807 states and 50813 transitions. Word has length 177 [2022-03-15 13:55:30,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:30,618 INFO L470 AbstractCegarLoop]: Abstraction has 17807 states and 50813 transitions. [2022-03-15 13:55:30,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:30,618 INFO L276 IsEmpty]: Start isEmpty. Operand 17807 states and 50813 transitions. [2022-03-15 13:55:30,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:30,647 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:30,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:30,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-03-15 13:55:30,647 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:30,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:30,648 INFO L85 PathProgramCache]: Analyzing trace with hash -82872490, now seen corresponding path program 26 times [2022-03-15 13:55:30,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:30,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787761843] [2022-03-15 13:55:30,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:30,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:30,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:30,988 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:30,988 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787761843] [2022-03-15 13:55:30,988 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787761843] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:30,988 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:30,988 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:55:30,988 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803481287] [2022-03-15 13:55:30,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:30,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:55:30,988 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:30,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:55:30,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:55:30,989 INFO L87 Difference]: Start difference. First operand 17807 states and 50813 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:31,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:31,696 INFO L93 Difference]: Finished difference Result 28192 states and 80964 transitions. [2022-03-15 13:55:31,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:55:31,696 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:31,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:31,754 INFO L225 Difference]: With dead ends: 28192 [2022-03-15 13:55:31,754 INFO L226 Difference]: Without dead ends: 28192 [2022-03-15 13:55:31,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=420, Invalid=1302, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:55:31,755 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 1107 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 3238 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:31,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 3238 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:55:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28192 states. [2022-03-15 13:55:32,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28192 to 17871. [2022-03-15 13:55:32,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17871 states, 17870 states have (on average 2.853329602686066) internal successors, (50989), 17870 states have internal predecessors, (50989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:32,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17871 states to 17871 states and 50989 transitions. [2022-03-15 13:55:32,159 INFO L78 Accepts]: Start accepts. Automaton has 17871 states and 50989 transitions. Word has length 177 [2022-03-15 13:55:32,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:32,159 INFO L470 AbstractCegarLoop]: Abstraction has 17871 states and 50989 transitions. [2022-03-15 13:55:32,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:32,159 INFO L276 IsEmpty]: Start isEmpty. Operand 17871 states and 50989 transitions. [2022-03-15 13:55:32,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:32,187 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:32,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:32,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-03-15 13:55:32,188 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:32,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:32,188 INFO L85 PathProgramCache]: Analyzing trace with hash 323801410, now seen corresponding path program 27 times [2022-03-15 13:55:32,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:32,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038447636] [2022-03-15 13:55:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:32,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:32,518 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:32,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038447636] [2022-03-15 13:55:32,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038447636] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:55:32,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788642243] [2022-03-15 13:55:32,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 13:55:32,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:55:32,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:55:32,520 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:55:32,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 13:55:32,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 13:55:32,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:55:32,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-15 13:55:32,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:55:33,209 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:55:33,210 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-15 13:55:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:33,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:55:33,497 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-03-15 13:55:33,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 49 [2022-03-15 13:55:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:33,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788642243] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:55:33,657 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:55:33,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 32 [2022-03-15 13:55:33,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563270983] [2022-03-15 13:55:33,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:55:33,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 13:55:33,658 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:33,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 13:55:33,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2022-03-15 13:55:33,659 INFO L87 Difference]: Start difference. First operand 17871 states and 50989 transitions. Second operand has 32 states, 32 states have (on average 9.3125) internal successors, (298), 32 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:35,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:35,055 INFO L93 Difference]: Finished difference Result 37467 states and 107671 transitions. [2022-03-15 13:55:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 13:55:35,055 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.3125) internal successors, (298), 32 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:35,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:35,129 INFO L225 Difference]: With dead ends: 37467 [2022-03-15 13:55:35,129 INFO L226 Difference]: Without dead ends: 37467 [2022-03-15 13:55:35,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=971, Invalid=3999, Unknown=0, NotChecked=0, Total=4970 [2022-03-15 13:55:35,130 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1444 mSDsluCounter, 7885 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 8261 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 722 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:35,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1444 Valid, 8261 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2029 Invalid, 0 Unknown, 722 Unchecked, 0.6s Time] [2022-03-15 13:55:35,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37467 states. [2022-03-15 13:55:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37467 to 19823. [2022-03-15 13:55:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19823 states, 19822 states have (on average 2.869387549187771) internal successors, (56877), 19822 states have internal predecessors, (56877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:35,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19823 states to 19823 states and 56877 transitions. [2022-03-15 13:55:35,546 INFO L78 Accepts]: Start accepts. Automaton has 19823 states and 56877 transitions. Word has length 177 [2022-03-15 13:55:35,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:35,546 INFO L470 AbstractCegarLoop]: Abstraction has 19823 states and 56877 transitions. [2022-03-15 13:55:35,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.3125) internal successors, (298), 32 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:35,546 INFO L276 IsEmpty]: Start isEmpty. Operand 19823 states and 56877 transitions. [2022-03-15 13:55:35,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:35,573 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:35,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:35,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 13:55:35,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-03-15 13:55:35,781 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:35,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:35,781 INFO L85 PathProgramCache]: Analyzing trace with hash 734895440, now seen corresponding path program 16 times [2022-03-15 13:55:35,781 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:35,781 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177535046] [2022-03-15 13:55:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:35,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:36,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:36,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177535046] [2022-03-15 13:55:36,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177535046] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:55:36,112 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700041128] [2022-03-15 13:55:36,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 13:55:36,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:55:36,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:55:36,114 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:55:36,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 13:55:36,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 13:55:36,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:55:36,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-15 13:55:36,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:55:36,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:55:36,810 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:55:36,899 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:55:37,084 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:55:37,085 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:55:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:55:37,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:55:37,371 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_2006 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2006))) (let ((.cse0 (select .cse3 c_~get2~0.base)) (.cse1 (select .cse3 ~get1~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select .cse1 c_~get1~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse2)) (select .cse1 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-15 13:55:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-15 13:55:37,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700041128] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:55:37,447 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:55:37,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 45 [2022-03-15 13:55:37,448 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388609579] [2022-03-15 13:55:37,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:55:37,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 13:55:37,448 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:37,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 13:55:37,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1705, Unknown=1, NotChecked=84, Total=1980 [2022-03-15 13:55:37,449 INFO L87 Difference]: Start difference. First operand 19823 states and 56877 transitions. Second operand has 45 states, 45 states have (on average 8.244444444444444) internal successors, (371), 45 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:39,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:39,769 INFO L93 Difference]: Finished difference Result 43716 states and 126019 transitions. [2022-03-15 13:55:39,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 13:55:39,770 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.244444444444444) internal successors, (371), 45 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:39,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:39,868 INFO L225 Difference]: With dead ends: 43716 [2022-03-15 13:55:39,868 INFO L226 Difference]: Without dead ends: 43716 [2022-03-15 13:55:39,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 337 SyntacticMatches, 4 SemanticMatches, 91 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1948 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1752, Invalid=6623, Unknown=1, NotChecked=180, Total=8556 [2022-03-15 13:55:39,869 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 2856 mSDsluCounter, 7140 mSDsCounter, 0 mSdLazyCounter, 2610 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2856 SdHoareTripleChecker+Valid, 7400 SdHoareTripleChecker+Invalid, 3721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1068 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:39,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2856 Valid, 7400 Invalid, 3721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2610 Invalid, 0 Unknown, 1068 Unchecked, 0.7s Time] [2022-03-15 13:55:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43716 states. [2022-03-15 13:55:40,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43716 to 19303. [2022-03-15 13:55:40,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19303 states, 19302 states have (on average 2.869391772873277) internal successors, (55385), 19302 states have internal predecessors, (55385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:40,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19303 states to 19303 states and 55385 transitions. [2022-03-15 13:55:40,516 INFO L78 Accepts]: Start accepts. Automaton has 19303 states and 55385 transitions. Word has length 177 [2022-03-15 13:55:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:40,516 INFO L470 AbstractCegarLoop]: Abstraction has 19303 states and 55385 transitions. [2022-03-15 13:55:40,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.244444444444444) internal successors, (371), 45 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:40,517 INFO L276 IsEmpty]: Start isEmpty. Operand 19303 states and 55385 transitions. [2022-03-15 13:55:40,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:40,547 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:40,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:40,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-15 13:55:40,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:55:40,764 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:40,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:40,765 INFO L85 PathProgramCache]: Analyzing trace with hash 732676534, now seen corresponding path program 19 times [2022-03-15 13:55:40,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:40,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104561170] [2022-03-15 13:55:40,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:40,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:40,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:40,991 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:40,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104561170] [2022-03-15 13:55:40,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104561170] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:40,991 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:40,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:55:40,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913476417] [2022-03-15 13:55:40,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:40,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:55:40,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:40,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:55:40,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:55:40,992 INFO L87 Difference]: Start difference. First operand 19303 states and 55385 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:41,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:41,506 INFO L93 Difference]: Finished difference Result 29034 states and 83720 transitions. [2022-03-15 13:55:41,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 13:55:41,507 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:41,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:41,569 INFO L225 Difference]: With dead ends: 29034 [2022-03-15 13:55:41,569 INFO L226 Difference]: Without dead ends: 29034 [2022-03-15 13:55:41,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=364, Invalid=1196, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 13:55:41,570 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 944 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 3231 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:41,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [944 Valid, 3231 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:55:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29034 states. [2022-03-15 13:55:41,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29034 to 19303. [2022-03-15 13:55:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19303 states, 19302 states have (on average 2.869391772873277) internal successors, (55385), 19302 states have internal predecessors, (55385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19303 states to 19303 states and 55385 transitions. [2022-03-15 13:55:41,956 INFO L78 Accepts]: Start accepts. Automaton has 19303 states and 55385 transitions. Word has length 177 [2022-03-15 13:55:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:41,956 INFO L470 AbstractCegarLoop]: Abstraction has 19303 states and 55385 transitions. [2022-03-15 13:55:41,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 19303 states and 55385 transitions. [2022-03-15 13:55:41,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:41,985 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:41,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:41,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-03-15 13:55:41,985 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:41,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:41,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1840748610, now seen corresponding path program 17 times [2022-03-15 13:55:41,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:41,986 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135749971] [2022-03-15 13:55:41,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:41,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:42,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:42,208 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:42,208 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135749971] [2022-03-15 13:55:42,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135749971] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:42,208 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:42,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:55:42,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298444592] [2022-03-15 13:55:42,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:42,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:55:42,208 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:42,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:55:42,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:55:42,209 INFO L87 Difference]: Start difference. First operand 19303 states and 55385 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:42,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:42,695 INFO L93 Difference]: Finished difference Result 28618 states and 82436 transitions. [2022-03-15 13:55:42,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 13:55:42,696 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:42,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:42,759 INFO L225 Difference]: With dead ends: 28618 [2022-03-15 13:55:42,759 INFO L226 Difference]: Without dead ends: 28618 [2022-03-15 13:55:42,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=357, Invalid=1125, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 13:55:42,760 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 911 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:42,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 2674 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:55:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28618 states. [2022-03-15 13:55:43,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28618 to 19311. [2022-03-15 13:55:43,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19311 states, 19310 states have (on average 2.869031589849819) internal successors, (55401), 19310 states have internal predecessors, (55401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:43,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19311 states to 19311 states and 55401 transitions. [2022-03-15 13:55:43,146 INFO L78 Accepts]: Start accepts. Automaton has 19311 states and 55401 transitions. Word has length 177 [2022-03-15 13:55:43,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:43,146 INFO L470 AbstractCegarLoop]: Abstraction has 19311 states and 55401 transitions. [2022-03-15 13:55:43,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:43,146 INFO L276 IsEmpty]: Start isEmpty. Operand 19311 states and 55401 transitions. [2022-03-15 13:55:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:43,174 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:43,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:43,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-03-15 13:55:43,175 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:43,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:43,175 INFO L85 PathProgramCache]: Analyzing trace with hash -597878358, now seen corresponding path program 18 times [2022-03-15 13:55:43,175 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:43,175 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624912987] [2022-03-15 13:55:43,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:43,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:43,402 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:43,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624912987] [2022-03-15 13:55:43,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624912987] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:55:43,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160349001] [2022-03-15 13:55:43,402 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 13:55:43,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:55:43,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:55:43,404 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:55:43,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 13:55:43,561 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 13:55:43,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:55:43,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-15 13:55:43,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:55:43,821 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:55:43,822 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:55:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:43,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:55:43,979 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-03-15 13:55:43,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-03-15 13:55:44,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:44,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160349001] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:55:44,091 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:55:44,091 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 29 [2022-03-15 13:55:44,091 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127551696] [2022-03-15 13:55:44,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:55:44,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-15 13:55:44,091 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:44,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-15 13:55:44,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2022-03-15 13:55:44,092 INFO L87 Difference]: Start difference. First operand 19311 states and 55401 transitions. Second operand has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:45,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:45,179 INFO L93 Difference]: Finished difference Result 32416 states and 93767 transitions. [2022-03-15 13:55:45,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 13:55:45,179 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:45,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:45,254 INFO L225 Difference]: With dead ends: 32416 [2022-03-15 13:55:45,254 INFO L226 Difference]: Without dead ends: 32416 [2022-03-15 13:55:45,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 357 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=936, Invalid=3620, Unknown=0, NotChecked=0, Total=4556 [2022-03-15 13:55:45,255 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1753 mSDsluCounter, 4701 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1753 SdHoareTripleChecker+Valid, 5020 SdHoareTripleChecker+Invalid, 2196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 639 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:45,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1753 Valid, 5020 Invalid, 2196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1530 Invalid, 0 Unknown, 639 Unchecked, 0.4s Time] [2022-03-15 13:55:45,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32416 states. [2022-03-15 13:55:45,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32416 to 19367. [2022-03-15 13:55:45,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19367 states, 19366 states have (on average 2.86910048538676) internal successors, (55563), 19366 states have internal predecessors, (55563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:45,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19367 states to 19367 states and 55563 transitions. [2022-03-15 13:55:45,688 INFO L78 Accepts]: Start accepts. Automaton has 19367 states and 55563 transitions. Word has length 177 [2022-03-15 13:55:45,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:45,688 INFO L470 AbstractCegarLoop]: Abstraction has 19367 states and 55563 transitions. [2022-03-15 13:55:45,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.551724137931034) internal successors, (277), 29 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:45,688 INFO L276 IsEmpty]: Start isEmpty. Operand 19367 states and 55563 transitions. [2022-03-15 13:55:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:45,718 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:45,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:45,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-15 13:55:45,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:55:45,935 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:45,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:45,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1723748196, now seen corresponding path program 20 times [2022-03-15 13:55:45,935 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:45,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129918352] [2022-03-15 13:55:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:45,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:46,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:46,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:46,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129918352] [2022-03-15 13:55:46,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129918352] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:46,359 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:46,359 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:55:46,359 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459740845] [2022-03-15 13:55:46,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:46,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:55:46,359 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:46,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:55:46,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:55:46,360 INFO L87 Difference]: Start difference. First operand 19367 states and 55563 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:46,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:46,999 INFO L93 Difference]: Finished difference Result 28752 states and 82832 transitions. [2022-03-15 13:55:46,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:55:46,999 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:46,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:47,057 INFO L225 Difference]: With dead ends: 28752 [2022-03-15 13:55:47,058 INFO L226 Difference]: Without dead ends: 28752 [2022-03-15 13:55:47,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:55:47,058 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 867 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:47,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 3003 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:55:47,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28752 states. [2022-03-15 13:55:47,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28752 to 19383. [2022-03-15 13:55:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19383 states, 19382 states have (on average 2.869827675162522) internal successors, (55623), 19382 states have internal predecessors, (55623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:47,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19383 states to 19383 states and 55623 transitions. [2022-03-15 13:55:47,456 INFO L78 Accepts]: Start accepts. Automaton has 19383 states and 55623 transitions. Word has length 177 [2022-03-15 13:55:47,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:47,456 INFO L470 AbstractCegarLoop]: Abstraction has 19383 states and 55623 transitions. [2022-03-15 13:55:47,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:47,456 INFO L276 IsEmpty]: Start isEmpty. Operand 19383 states and 55623 transitions. [2022-03-15 13:55:47,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:47,487 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:47,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:47,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-03-15 13:55:47,487 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:47,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:47,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1044305538, now seen corresponding path program 19 times [2022-03-15 13:55:47,488 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:47,488 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091018731] [2022-03-15 13:55:47,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:47,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:47,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:47,820 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:47,820 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091018731] [2022-03-15 13:55:47,821 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091018731] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:47,821 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:47,821 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:55:47,821 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150500511] [2022-03-15 13:55:47,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:47,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:55:47,821 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:47,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:55:47,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:55:47,821 INFO L87 Difference]: Start difference. First operand 19383 states and 55623 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:48,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:48,531 INFO L93 Difference]: Finished difference Result 28706 states and 82702 transitions. [2022-03-15 13:55:48,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:55:48,532 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:48,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:48,597 INFO L225 Difference]: With dead ends: 28706 [2022-03-15 13:55:48,597 INFO L226 Difference]: Without dead ends: 28706 [2022-03-15 13:55:48,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:55:48,597 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 946 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:48,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 2791 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:55:48,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28706 states. [2022-03-15 13:55:48,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28706 to 19391. [2022-03-15 13:55:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19391 states, 19390 states have (on average 2.869778236204229) internal successors, (55645), 19390 states have internal predecessors, (55645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:48,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19391 states to 19391 states and 55645 transitions. [2022-03-15 13:55:48,995 INFO L78 Accepts]: Start accepts. Automaton has 19391 states and 55645 transitions. Word has length 177 [2022-03-15 13:55:48,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:48,996 INFO L470 AbstractCegarLoop]: Abstraction has 19391 states and 55645 transitions. [2022-03-15 13:55:48,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:48,996 INFO L276 IsEmpty]: Start isEmpty. Operand 19391 states and 55645 transitions. [2022-03-15 13:55:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:49,024 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:49,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:49,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-03-15 13:55:49,025 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:49,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:49,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1245854428, now seen corresponding path program 28 times [2022-03-15 13:55:49,025 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:49,025 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425369492] [2022-03-15 13:55:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:49,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:49,251 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:49,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425369492] [2022-03-15 13:55:49,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425369492] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:49,252 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:49,252 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:55:49,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212197186] [2022-03-15 13:55:49,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:49,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:55:49,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:49,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:55:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:55:49,252 INFO L87 Difference]: Start difference. First operand 19391 states and 55645 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:49,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:49,755 INFO L93 Difference]: Finished difference Result 28408 states and 81872 transitions. [2022-03-15 13:55:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 13:55:49,755 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:49,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:49,814 INFO L225 Difference]: With dead ends: 28408 [2022-03-15 13:55:49,814 INFO L226 Difference]: Without dead ends: 28408 [2022-03-15 13:55:49,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=376, Invalid=1184, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 13:55:49,815 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1050 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:49,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 3328 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:55:49,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28408 states. [2022-03-15 13:55:50,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28408 to 19383. [2022-03-15 13:55:50,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19383 states, 19382 states have (on average 2.869827675162522) internal successors, (55623), 19382 states have internal predecessors, (55623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:50,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19383 states to 19383 states and 55623 transitions. [2022-03-15 13:55:50,213 INFO L78 Accepts]: Start accepts. Automaton has 19383 states and 55623 transitions. Word has length 177 [2022-03-15 13:55:50,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:50,213 INFO L470 AbstractCegarLoop]: Abstraction has 19383 states and 55623 transitions. [2022-03-15 13:55:50,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:50,213 INFO L276 IsEmpty]: Start isEmpty. Operand 19383 states and 55623 transitions. [2022-03-15 13:55:50,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:50,245 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:50,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:50,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-03-15 13:55:50,245 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:50,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1709429170, now seen corresponding path program 15 times [2022-03-15 13:55:50,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:50,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183490424] [2022-03-15 13:55:50,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:50,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:50,482 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:50,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183490424] [2022-03-15 13:55:50,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183490424] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:50,482 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:50,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:55:50,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397609097] [2022-03-15 13:55:50,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:50,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:55:50,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:50,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:55:50,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:55:50,483 INFO L87 Difference]: Start difference. First operand 19383 states and 55623 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:50,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:50,995 INFO L93 Difference]: Finished difference Result 28536 states and 82240 transitions. [2022-03-15 13:55:50,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 13:55:50,995 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:50,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:51,062 INFO L225 Difference]: With dead ends: 28536 [2022-03-15 13:55:51,062 INFO L226 Difference]: Without dead ends: 28536 [2022-03-15 13:55:51,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=369, Invalid=1113, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 13:55:51,063 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1419 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:51,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1419 Valid, 2864 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:55:51,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28536 states. [2022-03-15 13:55:51,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28536 to 19359. [2022-03-15 13:55:51,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19359 states, 19358 states have (on average 2.8687364397148465) internal successors, (55533), 19358 states have internal predecessors, (55533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:51,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19359 states to 19359 states and 55533 transitions. [2022-03-15 13:55:51,518 INFO L78 Accepts]: Start accepts. Automaton has 19359 states and 55533 transitions. Word has length 177 [2022-03-15 13:55:51,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:51,518 INFO L470 AbstractCegarLoop]: Abstraction has 19359 states and 55533 transitions. [2022-03-15 13:55:51,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:51,518 INFO L276 IsEmpty]: Start isEmpty. Operand 19359 states and 55533 transitions. [2022-03-15 13:55:51,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:51,548 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:51,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:51,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-03-15 13:55:51,548 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:51,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:51,549 INFO L85 PathProgramCache]: Analyzing trace with hash 895297868, now seen corresponding path program 21 times [2022-03-15 13:55:51,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:51,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626241847] [2022-03-15 13:55:51,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:51,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:51,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:51,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626241847] [2022-03-15 13:55:51,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626241847] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:51,803 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:51,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:55:51,803 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568776966] [2022-03-15 13:55:51,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:51,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:55:51,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:51,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:55:51,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:55:51,805 INFO L87 Difference]: Start difference. First operand 19359 states and 55533 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:52,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:52,267 INFO L93 Difference]: Finished difference Result 28640 states and 82468 transitions. [2022-03-15 13:55:52,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 13:55:52,267 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:52,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:52,330 INFO L225 Difference]: With dead ends: 28640 [2022-03-15 13:55:52,330 INFO L226 Difference]: Without dead ends: 28640 [2022-03-15 13:55:52,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:55:52,333 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 890 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:52,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 2909 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:55:52,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28640 states. [2022-03-15 13:55:52,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28640 to 19359. [2022-03-15 13:55:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19359 states, 19358 states have (on average 2.8683231738815995) internal successors, (55525), 19358 states have internal predecessors, (55525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19359 states to 19359 states and 55525 transitions. [2022-03-15 13:55:52,725 INFO L78 Accepts]: Start accepts. Automaton has 19359 states and 55525 transitions. Word has length 177 [2022-03-15 13:55:52,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:52,725 INFO L470 AbstractCegarLoop]: Abstraction has 19359 states and 55525 transitions. [2022-03-15 13:55:52,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:52,726 INFO L276 IsEmpty]: Start isEmpty. Operand 19359 states and 55525 transitions. [2022-03-15 13:55:52,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:52,756 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:52,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:52,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-03-15 13:55:52,756 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash -631615694, now seen corresponding path program 20 times [2022-03-15 13:55:52,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:52,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820252310] [2022-03-15 13:55:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:52,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:53,051 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:53,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820252310] [2022-03-15 13:55:53,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820252310] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:53,051 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:53,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:55:53,052 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231176173] [2022-03-15 13:55:53,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:53,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:55:53,052 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:53,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:55:53,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:55:53,052 INFO L87 Difference]: Start difference. First operand 19359 states and 55525 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:53,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:53,634 INFO L93 Difference]: Finished difference Result 28428 states and 81862 transitions. [2022-03-15 13:55:53,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 13:55:53,634 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:53,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:53,701 INFO L225 Difference]: With dead ends: 28428 [2022-03-15 13:55:53,701 INFO L226 Difference]: Without dead ends: 28428 [2022-03-15 13:55:53,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 13:55:53,702 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1024 mSDsluCounter, 2865 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:53,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 3142 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:55:53,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28428 states. [2022-03-15 13:55:54,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28428 to 19327. [2022-03-15 13:55:54,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19327 states, 19326 states have (on average 2.8666563179136912) internal successors, (55401), 19326 states have internal predecessors, (55401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19327 states to 19327 states and 55401 transitions. [2022-03-15 13:55:54,097 INFO L78 Accepts]: Start accepts. Automaton has 19327 states and 55401 transitions. Word has length 177 [2022-03-15 13:55:54,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:54,097 INFO L470 AbstractCegarLoop]: Abstraction has 19327 states and 55401 transitions. [2022-03-15 13:55:54,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:54,097 INFO L276 IsEmpty]: Start isEmpty. Operand 19327 states and 55401 transitions. [2022-03-15 13:55:54,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:54,125 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:54,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:54,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-03-15 13:55:54,125 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:54,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash -430066804, now seen corresponding path program 29 times [2022-03-15 13:55:54,125 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:54,127 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379719995] [2022-03-15 13:55:54,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:54,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:54,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:54,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379719995] [2022-03-15 13:55:54,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379719995] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:54,510 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:54,510 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:55:54,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733026084] [2022-03-15 13:55:54,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:54,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:55:54,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:54,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:55:54,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:55:54,510 INFO L87 Difference]: Start difference. First operand 19327 states and 55401 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:55,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:55,255 INFO L93 Difference]: Finished difference Result 28272 states and 81418 transitions. [2022-03-15 13:55:55,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 13:55:55,255 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:55,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:55,313 INFO L225 Difference]: With dead ends: 28272 [2022-03-15 13:55:55,313 INFO L226 Difference]: Without dead ends: 28272 [2022-03-15 13:55:55,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=374, Invalid=1186, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 13:55:55,314 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 975 mSDsluCounter, 3156 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:55,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 3436 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:55:55,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28272 states. [2022-03-15 13:55:55,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28272 to 19327. [2022-03-15 13:55:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19327 states, 19326 states have (on average 2.8666563179136912) internal successors, (55401), 19326 states have internal predecessors, (55401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19327 states to 19327 states and 55401 transitions. [2022-03-15 13:55:55,666 INFO L78 Accepts]: Start accepts. Automaton has 19327 states and 55401 transitions. Word has length 177 [2022-03-15 13:55:55,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:55,666 INFO L470 AbstractCegarLoop]: Abstraction has 19327 states and 55401 transitions. [2022-03-15 13:55:55,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:55,666 INFO L276 IsEmpty]: Start isEmpty. Operand 19327 states and 55401 transitions. [2022-03-15 13:55:55,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:55,691 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:55,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:55,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-03-15 13:55:55,691 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:55,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:55,692 INFO L85 PathProgramCache]: Analyzing trace with hash 33507938, now seen corresponding path program 16 times [2022-03-15 13:55:55,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:55,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987231796] [2022-03-15 13:55:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:55,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:55,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:56,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:56,070 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:56,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987231796] [2022-03-15 13:55:56,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987231796] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:56,070 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:56,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:55:56,071 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478124596] [2022-03-15 13:55:56,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:56,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:55:56,071 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:56,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:55:56,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:55:56,071 INFO L87 Difference]: Start difference. First operand 19327 states and 55401 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:56,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:56,810 INFO L93 Difference]: Finished difference Result 28408 states and 81808 transitions. [2022-03-15 13:55:56,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 13:55:56,810 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:56,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:56,871 INFO L225 Difference]: With dead ends: 28408 [2022-03-15 13:55:56,871 INFO L226 Difference]: Without dead ends: 28408 [2022-03-15 13:55:56,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=367, Invalid=1115, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 13:55:56,872 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1265 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 2901 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:56,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1265 Valid, 2901 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:55:56,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28408 states. [2022-03-15 13:55:57,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28408 to 19319. [2022-03-15 13:55:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19319 states, 19318 states have (on average 2.865876384718915) internal successors, (55363), 19318 states have internal predecessors, (55363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:57,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19319 states to 19319 states and 55363 transitions. [2022-03-15 13:55:57,257 INFO L78 Accepts]: Start accepts. Automaton has 19319 states and 55363 transitions. Word has length 177 [2022-03-15 13:55:57,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:57,258 INFO L470 AbstractCegarLoop]: Abstraction has 19319 states and 55363 transitions. [2022-03-15 13:55:57,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:57,258 INFO L276 IsEmpty]: Start isEmpty. Operand 19319 states and 55363 transitions. [2022-03-15 13:55:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:57,287 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:57,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:57,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-03-15 13:55:57,287 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:57,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:57,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2064745658, now seen corresponding path program 30 times [2022-03-15 13:55:57,288 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:57,288 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028116638] [2022-03-15 13:55:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:57,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:57,706 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:57,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028116638] [2022-03-15 13:55:57,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028116638] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:57,706 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:57,706 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:55:57,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559135178] [2022-03-15 13:55:57,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:57,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:55:57,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:57,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:55:57,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:55:57,707 INFO L87 Difference]: Start difference. First operand 19319 states and 55363 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:58,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:58,489 INFO L93 Difference]: Finished difference Result 27856 states and 80114 transitions. [2022-03-15 13:55:58,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 13:55:58,489 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:58,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:58,552 INFO L225 Difference]: With dead ends: 27856 [2022-03-15 13:55:58,552 INFO L226 Difference]: Without dead ends: 27856 [2022-03-15 13:55:58,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:55:58,553 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1051 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:58,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 3101 Invalid, 911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:55:58,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27856 states. [2022-03-15 13:55:58,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27856 to 19199. [2022-03-15 13:55:58,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19199 states, 19198 states have (on average 2.8648296697572664) internal successors, (54999), 19198 states have internal predecessors, (54999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:59,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19199 states to 19199 states and 54999 transitions. [2022-03-15 13:55:59,009 INFO L78 Accepts]: Start accepts. Automaton has 19199 states and 54999 transitions. Word has length 177 [2022-03-15 13:55:59,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:55:59,010 INFO L470 AbstractCegarLoop]: Abstraction has 19199 states and 54999 transitions. [2022-03-15 13:55:59,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:59,010 INFO L276 IsEmpty]: Start isEmpty. Operand 19199 states and 54999 transitions. [2022-03-15 13:55:59,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:55:59,041 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:55:59,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:55:59,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-03-15 13:55:59,041 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:55:59,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:55:59,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1769863266, now seen corresponding path program 17 times [2022-03-15 13:55:59,042 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:55:59,042 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86462018] [2022-03-15 13:55:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:55:59,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:55:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:55:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:55:59,304 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:55:59,304 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86462018] [2022-03-15 13:55:59,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86462018] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:55:59,304 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:55:59,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:55:59,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962997430] [2022-03-15 13:55:59,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:55:59,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:55:59,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:55:59,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:55:59,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:55:59,305 INFO L87 Difference]: Start difference. First operand 19199 states and 54999 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:55:59,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:55:59,811 INFO L93 Difference]: Finished difference Result 27928 states and 80304 transitions. [2022-03-15 13:55:59,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 13:55:59,812 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:55:59,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:55:59,873 INFO L225 Difference]: With dead ends: 27928 [2022-03-15 13:55:59,873 INFO L226 Difference]: Without dead ends: 27928 [2022-03-15 13:55:59,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=411, Invalid=1229, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 13:55:59,874 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1137 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:55:59,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1137 Valid, 2777 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:55:59,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27928 states. [2022-03-15 13:56:00,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27928 to 19215. [2022-03-15 13:56:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19215 states, 19214 states have (on average 2.8647340480899346) internal successors, (55043), 19214 states have internal predecessors, (55043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:00,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19215 states to 19215 states and 55043 transitions. [2022-03-15 13:56:00,264 INFO L78 Accepts]: Start accepts. Automaton has 19215 states and 55043 transitions. Word has length 177 [2022-03-15 13:56:00,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:00,264 INFO L470 AbstractCegarLoop]: Abstraction has 19215 states and 55043 transitions. [2022-03-15 13:56:00,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:00,264 INFO L276 IsEmpty]: Start isEmpty. Operand 19215 states and 55043 transitions. [2022-03-15 13:56:00,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:00,295 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:00,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:00,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-03-15 13:56:00,295 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:00,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:00,295 INFO L85 PathProgramCache]: Analyzing trace with hash 430740608, now seen corresponding path program 18 times [2022-03-15 13:56:00,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:00,296 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825051506] [2022-03-15 13:56:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:00,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:00,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:00,531 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:00,531 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825051506] [2022-03-15 13:56:00,531 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825051506] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:56:00,531 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:56:00,531 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:56:00,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943939576] [2022-03-15 13:56:00,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:56:00,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:56:00,532 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:00,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:56:00,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:56:00,532 INFO L87 Difference]: Start difference. First operand 19215 states and 55043 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:01,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:56:01,124 INFO L93 Difference]: Finished difference Result 27928 states and 80096 transitions. [2022-03-15 13:56:01,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:56:01,124 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:56:01,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:56:01,181 INFO L225 Difference]: With dead ends: 27928 [2022-03-15 13:56:01,182 INFO L226 Difference]: Without dead ends: 27928 [2022-03-15 13:56:01,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=430, Invalid=1292, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:56:01,182 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 806 mSDsluCounter, 3605 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:56:01,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 3935 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:56:01,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27928 states. [2022-03-15 13:56:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27928 to 19163. [2022-03-15 13:56:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19163 states, 19162 states have (on average 2.8647844692620814) internal successors, (54895), 19162 states have internal predecessors, (54895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:01,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19163 states to 19163 states and 54895 transitions. [2022-03-15 13:56:01,583 INFO L78 Accepts]: Start accepts. Automaton has 19163 states and 54895 transitions. Word has length 177 [2022-03-15 13:56:01,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:01,584 INFO L470 AbstractCegarLoop]: Abstraction has 19163 states and 54895 transitions. [2022-03-15 13:56:01,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:01,584 INFO L276 IsEmpty]: Start isEmpty. Operand 19163 states and 54895 transitions. [2022-03-15 13:56:01,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:01,614 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:01,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:01,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-03-15 13:56:01,614 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:01,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:01,615 INFO L85 PathProgramCache]: Analyzing trace with hash -267298982, now seen corresponding path program 21 times [2022-03-15 13:56:01,615 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:01,615 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545207817] [2022-03-15 13:56:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:01,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:01,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:01,872 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:01,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545207817] [2022-03-15 13:56:01,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545207817] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:56:01,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143213979] [2022-03-15 13:56:01,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 13:56:01,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:56:01,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:56:01,874 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:56:01,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 13:56:02,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 13:56:02,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:56:02,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-15 13:56:02,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:56:02,309 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:56:02,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:56:02,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:02,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:56:02,466 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-03-15 13:56:02,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 50 [2022-03-15 13:56:02,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:02,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143213979] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:56:02,543 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:56:02,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 31 [2022-03-15 13:56:02,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917680] [2022-03-15 13:56:02,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:56:02,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 13:56:02,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:02,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 13:56:02,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2022-03-15 13:56:02,544 INFO L87 Difference]: Start difference. First operand 19163 states and 54895 transitions. Second operand has 31 states, 31 states have (on average 9.064516129032258) internal successors, (281), 31 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:56:03,929 INFO L93 Difference]: Finished difference Result 30218 states and 86676 transitions. [2022-03-15 13:56:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-15 13:56:03,929 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.064516129032258) internal successors, (281), 31 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:56:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:56:04,004 INFO L225 Difference]: With dead ends: 30218 [2022-03-15 13:56:04,005 INFO L226 Difference]: Without dead ends: 30218 [2022-03-15 13:56:04,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 353 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1191, Invalid=4661, Unknown=0, NotChecked=0, Total=5852 [2022-03-15 13:56:04,006 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 1485 mSDsluCounter, 6043 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 6384 SdHoareTripleChecker+Invalid, 2067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 389 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:56:04,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 6384 Invalid, 2067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1644 Invalid, 0 Unknown, 389 Unchecked, 0.4s Time] [2022-03-15 13:56:04,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30218 states. [2022-03-15 13:56:04,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30218 to 18725. [2022-03-15 13:56:04,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18725 states, 18724 states have (on average 2.8766823328348643) internal successors, (53863), 18724 states have internal predecessors, (53863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:04,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18725 states to 18725 states and 53863 transitions. [2022-03-15 13:56:04,455 INFO L78 Accepts]: Start accepts. Automaton has 18725 states and 53863 transitions. Word has length 177 [2022-03-15 13:56:04,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:04,455 INFO L470 AbstractCegarLoop]: Abstraction has 18725 states and 53863 transitions. [2022-03-15 13:56:04,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.064516129032258) internal successors, (281), 31 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:04,456 INFO L276 IsEmpty]: Start isEmpty. Operand 18725 states and 53863 transitions. [2022-03-15 13:56:04,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:04,489 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:04,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:04,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-15 13:56:04,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:56:04,705 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:04,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:04,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1786844712, now seen corresponding path program 22 times [2022-03-15 13:56:04,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:04,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015187821] [2022-03-15 13:56:04,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:04,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:05,033 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:05,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015187821] [2022-03-15 13:56:05,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015187821] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:56:05,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922216414] [2022-03-15 13:56:05,033 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 13:56:05,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:56:05,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:56:05,034 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:56:05,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 13:56:05,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 13:56:05,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:56:05,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-15 13:56:05,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:56:05,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:56:05,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:56:05,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:56:06,205 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:56:06,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:56:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:56:06,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:56:06,523 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_2314 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2314))) (let ((.cse0 (select .cse3 c_~get2~0.base)) (.cse1 (select .cse3 ~get1~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select .cse1 c_~get1~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get2~0.offset .cse2)) (select .cse1 (+ c_~get1~0.offset .cse2))))))))) is different from false [2022-03-15 13:56:06,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-03-15 13:56:06,636 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922216414] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:56:06,636 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:56:06,636 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 45 [2022-03-15 13:56:06,636 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738925765] [2022-03-15 13:56:06,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:56:06,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 13:56:06,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:06,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 13:56:06,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1700, Unknown=1, NotChecked=84, Total=1980 [2022-03-15 13:56:06,637 INFO L87 Difference]: Start difference. First operand 18725 states and 53863 transitions. Second operand has 45 states, 45 states have (on average 8.266666666666667) internal successors, (372), 45 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:08,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:56:08,912 INFO L93 Difference]: Finished difference Result 28587 states and 81814 transitions. [2022-03-15 13:56:08,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 13:56:08,912 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.266666666666667) internal successors, (372), 45 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:56:08,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:56:08,973 INFO L225 Difference]: With dead ends: 28587 [2022-03-15 13:56:08,973 INFO L226 Difference]: Without dead ends: 28587 [2022-03-15 13:56:08,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 342 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1281, Invalid=5202, Unknown=1, NotChecked=158, Total=6642 [2022-03-15 13:56:08,974 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 1987 mSDsluCounter, 6937 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 7240 SdHoareTripleChecker+Invalid, 3604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1189 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:56:08,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1987 Valid, 7240 Invalid, 3604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2378 Invalid, 0 Unknown, 1189 Unchecked, 0.8s Time] [2022-03-15 13:56:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28587 states. [2022-03-15 13:56:09,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28587 to 17305. [2022-03-15 13:56:09,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17305 states, 17304 states have (on average 2.8657535829865926) internal successors, (49589), 17304 states have internal predecessors, (49589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:09,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17305 states to 17305 states and 49589 transitions. [2022-03-15 13:56:09,344 INFO L78 Accepts]: Start accepts. Automaton has 17305 states and 49589 transitions. Word has length 177 [2022-03-15 13:56:09,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:09,344 INFO L470 AbstractCegarLoop]: Abstraction has 17305 states and 49589 transitions. [2022-03-15 13:56:09,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.266666666666667) internal successors, (372), 45 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:09,344 INFO L276 IsEmpty]: Start isEmpty. Operand 17305 states and 49589 transitions. [2022-03-15 13:56:09,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:09,370 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:09,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:09,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 13:56:09,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-03-15 13:56:09,583 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:09,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:09,583 INFO L85 PathProgramCache]: Analyzing trace with hash 106754244, now seen corresponding path program 22 times [2022-03-15 13:56:09,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:09,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801227230] [2022-03-15 13:56:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:09,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:09,849 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:09,849 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801227230] [2022-03-15 13:56:09,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801227230] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:56:09,849 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:56:09,849 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:56:09,849 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289702755] [2022-03-15 13:56:09,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:56:09,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:56:09,849 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:09,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:56:09,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:56:09,850 INFO L87 Difference]: Start difference. First operand 17305 states and 49589 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:10,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:56:10,513 INFO L93 Difference]: Finished difference Result 33032 states and 94773 transitions. [2022-03-15 13:56:10,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:56:10,513 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:56:10,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:56:10,583 INFO L225 Difference]: With dead ends: 33032 [2022-03-15 13:56:10,584 INFO L226 Difference]: Without dead ends: 33032 [2022-03-15 13:56:10,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=449, Invalid=1621, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 13:56:10,584 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 1529 mSDsluCounter, 3578 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 3900 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:56:10,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1529 Valid, 3900 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:56:10,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33032 states. [2022-03-15 13:56:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33032 to 17305. [2022-03-15 13:56:10,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17305 states, 17304 states have (on average 2.8657535829865926) internal successors, (49589), 17304 states have internal predecessors, (49589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:10,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17305 states to 17305 states and 49589 transitions. [2022-03-15 13:56:10,987 INFO L78 Accepts]: Start accepts. Automaton has 17305 states and 49589 transitions. Word has length 177 [2022-03-15 13:56:10,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:10,987 INFO L470 AbstractCegarLoop]: Abstraction has 17305 states and 49589 transitions. [2022-03-15 13:56:10,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:10,987 INFO L276 IsEmpty]: Start isEmpty. Operand 17305 states and 49589 transitions. [2022-03-15 13:56:11,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:11,014 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:11,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:11,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-03-15 13:56:11,015 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:11,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:11,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1999415984, now seen corresponding path program 23 times [2022-03-15 13:56:11,015 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:11,015 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637171122] [2022-03-15 13:56:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:11,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:11,297 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:11,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637171122] [2022-03-15 13:56:11,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637171122] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:56:11,298 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500328136] [2022-03-15 13:56:11,298 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 13:56:11,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:56:11,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:56:11,299 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:56:11,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 13:56:11,465 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 13:56:11,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:56:11,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-15 13:56:11,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:56:11,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:56:11,526 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:56:11,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:56:11,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:56:11,827 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:56:11,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:56:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:11,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:56:12,060 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_2364 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2364))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (not (= |c_thread1Thread1of1ForFork0_#t~mem2| (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))))) (= (select (select .cse1 c_~get1~0.base) c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-15 13:56:12,101 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-15 13:56:12,102 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 131 [2022-03-15 13:56:12,116 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:56:12,116 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 92 [2022-03-15 13:56:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:12,720 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500328136] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:56:12,720 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:56:12,720 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 39 [2022-03-15 13:56:12,721 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770222020] [2022-03-15 13:56:12,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:56:12,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-15 13:56:12,721 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:12,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-15 13:56:12,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1280, Unknown=1, NotChecked=72, Total=1482 [2022-03-15 13:56:12,721 INFO L87 Difference]: Start difference. First operand 17305 states and 49589 transitions. Second operand has 39 states, 39 states have (on average 7.9743589743589745) internal successors, (311), 39 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:14,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:56:14,000 INFO L93 Difference]: Finished difference Result 37416 states and 107769 transitions. [2022-03-15 13:56:14,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 13:56:14,000 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 7.9743589743589745) internal successors, (311), 39 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:56:14,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:56:14,070 INFO L225 Difference]: With dead ends: 37416 [2022-03-15 13:56:14,070 INFO L226 Difference]: Without dead ends: 37416 [2022-03-15 13:56:14,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1150, Invalid=4859, Unknown=1, NotChecked=152, Total=6162 [2022-03-15 13:56:14,071 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 2532 mSDsluCounter, 6994 mSDsCounter, 0 mSdLazyCounter, 1662 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2532 SdHoareTripleChecker+Valid, 7303 SdHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1001 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:56:14,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2532 Valid, 7303 Invalid, 2680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1662 Invalid, 0 Unknown, 1001 Unchecked, 0.4s Time] [2022-03-15 13:56:14,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37416 states. [2022-03-15 13:56:14,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37416 to 17515. [2022-03-15 13:56:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17515 states, 17514 states have (on average 2.8666780861025467) internal successors, (50207), 17514 states have internal predecessors, (50207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17515 states to 17515 states and 50207 transitions. [2022-03-15 13:56:14,453 INFO L78 Accepts]: Start accepts. Automaton has 17515 states and 50207 transitions. Word has length 177 [2022-03-15 13:56:14,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:14,453 INFO L470 AbstractCegarLoop]: Abstraction has 17515 states and 50207 transitions. [2022-03-15 13:56:14,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 7.9743589743589745) internal successors, (311), 39 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 17515 states and 50207 transitions. [2022-03-15 13:56:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:14,477 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:14,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:14,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-15 13:56:14,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-03-15 13:56:14,691 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:14,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1635958392, now seen corresponding path program 24 times [2022-03-15 13:56:14,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:14,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787896699] [2022-03-15 13:56:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:14,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:14,937 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:14,937 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787896699] [2022-03-15 13:56:14,937 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787896699] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:56:14,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106713841] [2022-03-15 13:56:14,938 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 13:56:14,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:56:14,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:56:14,939 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:56:14,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 13:56:15,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 13:56:15,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:56:15,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-15 13:56:15,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:56:15,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:56:15,143 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:56:15,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:56:15,312 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:56:15,453 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:56:15,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:56:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:15,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:56:15,599 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_2398 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2398))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (not (= |c_thread1Thread1of1ForFork0_#t~mem2| (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))))) (= (select .cse0 c_~get2~0.offset) (select (select .cse1 c_~get1~0.base) c_~get1~0.offset)))))) is different from false [2022-03-15 13:56:15,625 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-15 13:56:15,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 131 [2022-03-15 13:56:15,636 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:56:15,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 92 [2022-03-15 13:56:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:16,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106713841] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:56:16,198 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:56:16,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 39 [2022-03-15 13:56:16,199 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477329608] [2022-03-15 13:56:16,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:56:16,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-15 13:56:16,199 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:16,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-15 13:56:16,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1280, Unknown=1, NotChecked=72, Total=1482 [2022-03-15 13:56:16,199 INFO L87 Difference]: Start difference. First operand 17515 states and 50207 transitions. Second operand has 39 states, 39 states have (on average 8.102564102564102) internal successors, (316), 39 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:18,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:56:18,093 INFO L93 Difference]: Finished difference Result 33229 states and 95744 transitions. [2022-03-15 13:56:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 13:56:18,094 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 8.102564102564102) internal successors, (316), 39 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:56:18,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:56:18,164 INFO L225 Difference]: With dead ends: 33229 [2022-03-15 13:56:18,164 INFO L226 Difference]: Without dead ends: 33229 [2022-03-15 13:56:18,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1080 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1165, Invalid=4844, Unknown=1, NotChecked=152, Total=6162 [2022-03-15 13:56:18,166 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 2698 mSDsluCounter, 6524 mSDsCounter, 0 mSdLazyCounter, 1771 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2698 SdHoareTripleChecker+Valid, 6816 SdHoareTripleChecker+Invalid, 2381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 595 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 13:56:18,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2698 Valid, 6816 Invalid, 2381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1771 Invalid, 0 Unknown, 595 Unchecked, 0.7s Time] [2022-03-15 13:56:18,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33229 states. [2022-03-15 13:56:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33229 to 14419. [2022-03-15 13:56:18,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14419 states, 14418 states have (on average 2.8601054237758357) internal successors, (41237), 14418 states have internal predecessors, (41237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:18,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14419 states to 14419 states and 41237 transitions. [2022-03-15 13:56:18,557 INFO L78 Accepts]: Start accepts. Automaton has 14419 states and 41237 transitions. Word has length 177 [2022-03-15 13:56:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:18,557 INFO L470 AbstractCegarLoop]: Abstraction has 14419 states and 41237 transitions. [2022-03-15 13:56:18,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 8.102564102564102) internal successors, (316), 39 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:18,557 INFO L276 IsEmpty]: Start isEmpty. Operand 14419 states and 41237 transitions. [2022-03-15 13:56:18,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:18,580 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:18,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:18,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-15 13:56:18,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-03-15 13:56:18,795 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:18,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:18,795 INFO L85 PathProgramCache]: Analyzing trace with hash -480864666, now seen corresponding path program 23 times [2022-03-15 13:56:18,795 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:18,795 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882710846] [2022-03-15 13:56:18,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:18,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:19,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:19,213 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:19,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882710846] [2022-03-15 13:56:19,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882710846] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:56:19,213 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:56:19,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:56:19,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580183950] [2022-03-15 13:56:19,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:56:19,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:56:19,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:19,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:56:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:56:19,214 INFO L87 Difference]: Start difference. First operand 14419 states and 41237 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:20,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:56:20,159 INFO L93 Difference]: Finished difference Result 27765 states and 79817 transitions. [2022-03-15 13:56:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 13:56:20,160 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:56:20,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:56:20,228 INFO L225 Difference]: With dead ends: 27765 [2022-03-15 13:56:20,229 INFO L226 Difference]: Without dead ends: 27765 [2022-03-15 13:56:20,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=561, Invalid=1989, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 13:56:20,229 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 1599 mSDsluCounter, 3259 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 3584 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:56:20,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1599 Valid, 3584 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:56:20,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27765 states. [2022-03-15 13:56:20,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27765 to 14419. [2022-03-15 13:56:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14419 states, 14418 states have (on average 2.8601054237758357) internal successors, (41237), 14418 states have internal predecessors, (41237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:20,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14419 states to 14419 states and 41237 transitions. [2022-03-15 13:56:20,556 INFO L78 Accepts]: Start accepts. Automaton has 14419 states and 41237 transitions. Word has length 177 [2022-03-15 13:56:20,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:20,556 INFO L470 AbstractCegarLoop]: Abstraction has 14419 states and 41237 transitions. [2022-03-15 13:56:20,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:20,557 INFO L276 IsEmpty]: Start isEmpty. Operand 14419 states and 41237 transitions. [2022-03-15 13:56:20,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:20,578 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:20,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:20,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-03-15 13:56:20,581 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:20,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:20,597 INFO L85 PathProgramCache]: Analyzing trace with hash -643153592, now seen corresponding path program 24 times [2022-03-15 13:56:20,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:20,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141432236] [2022-03-15 13:56:20,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:20,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:21,066 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:21,066 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141432236] [2022-03-15 13:56:21,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141432236] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:56:21,068 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:56:21,068 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:56:21,068 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047003598] [2022-03-15 13:56:21,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:56:21,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:56:21,069 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:21,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:56:21,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:56:21,074 INFO L87 Difference]: Start difference. First operand 14419 states and 41237 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:56:22,093 INFO L93 Difference]: Finished difference Result 24104 states and 69548 transitions. [2022-03-15 13:56:22,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 13:56:22,095 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:56:22,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:56:22,136 INFO L225 Difference]: With dead ends: 24104 [2022-03-15 13:56:22,137 INFO L226 Difference]: Without dead ends: 24104 [2022-03-15 13:56:22,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 13:56:22,137 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1317 mSDsluCounter, 3235 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 3532 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:56:22,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 3532 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:56:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24104 states. [2022-03-15 13:56:22,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24104 to 14427. [2022-03-15 13:56:22,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14427 states, 14426 states have (on average 2.86059891861916) internal successors, (41267), 14426 states have internal predecessors, (41267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14427 states to 14427 states and 41267 transitions. [2022-03-15 13:56:22,530 INFO L78 Accepts]: Start accepts. Automaton has 14427 states and 41267 transitions. Word has length 177 [2022-03-15 13:56:22,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:22,530 INFO L470 AbstractCegarLoop]: Abstraction has 14427 states and 41267 transitions. [2022-03-15 13:56:22,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:22,530 INFO L276 IsEmpty]: Start isEmpty. Operand 14427 states and 41267 transitions. [2022-03-15 13:56:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:22,548 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:22,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:22,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-03-15 13:56:22,548 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:22,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:22,550 INFO L85 PathProgramCache]: Analyzing trace with hash 184108908, now seen corresponding path program 31 times [2022-03-15 13:56:22,550 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:22,550 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196518376] [2022-03-15 13:56:22,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:22,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:23,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:23,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:23,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196518376] [2022-03-15 13:56:23,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196518376] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:56:23,030 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:56:23,030 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:56:23,030 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313492457] [2022-03-15 13:56:23,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:56:23,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:56:23,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:23,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:56:23,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:56:23,031 INFO L87 Difference]: Start difference. First operand 14427 states and 41267 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:23,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:56:23,789 INFO L93 Difference]: Finished difference Result 23636 states and 68154 transitions. [2022-03-15 13:56:23,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 13:56:23,790 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:56:23,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:56:23,835 INFO L225 Difference]: With dead ends: 23636 [2022-03-15 13:56:23,835 INFO L226 Difference]: Without dead ends: 23636 [2022-03-15 13:56:23,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=473, Invalid=1689, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 13:56:23,836 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1168 mSDsluCounter, 2898 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:56:23,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 3198 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:56:23,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23636 states. [2022-03-15 13:56:24,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23636 to 14459. [2022-03-15 13:56:24,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14459 states, 14458 states have (on average 2.860354129201826) internal successors, (41355), 14458 states have internal predecessors, (41355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:24,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14459 states to 14459 states and 41355 transitions. [2022-03-15 13:56:24,223 INFO L78 Accepts]: Start accepts. Automaton has 14459 states and 41355 transitions. Word has length 177 [2022-03-15 13:56:24,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:24,224 INFO L470 AbstractCegarLoop]: Abstraction has 14459 states and 41355 transitions. [2022-03-15 13:56:24,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:24,224 INFO L276 IsEmpty]: Start isEmpty. Operand 14459 states and 41355 transitions. [2022-03-15 13:56:24,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:24,245 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:24,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:24,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-03-15 13:56:24,246 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:24,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:24,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1712752536, now seen corresponding path program 32 times [2022-03-15 13:56:24,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:24,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387949633] [2022-03-15 13:56:24,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:24,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:24,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:24,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387949633] [2022-03-15 13:56:24,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387949633] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:56:24,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499153754] [2022-03-15 13:56:24,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 13:56:24,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:56:24,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:56:24,742 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:56:24,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 13:56:24,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 13:56:24,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:56:24,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-15 13:56:24,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:56:24,946 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:56:25,003 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:56:25,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:56:25,361 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:56:25,692 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:56:25,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-15 13:56:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:25,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:56:25,982 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_2480 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2480))) (let ((.cse1 (select .cse0 ~get2~0.base))) (or (<= (select (select .cse0 c_~get1~0.base) c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (< (select .cse1 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))) |c_thread1Thread1of1ForFork0_#t~mem2|))))) is different from false [2022-03-15 13:56:26,026 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-15 13:56:26,027 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 128 [2022-03-15 13:56:26,043 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:56:26,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 81 [2022-03-15 13:56:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:26,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499153754] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:56:26,763 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:56:26,763 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 42 [2022-03-15 13:56:26,763 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107668909] [2022-03-15 13:56:26,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:56:26,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 13:56:26,764 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:26,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 13:56:26,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1469, Unknown=1, NotChecked=78, Total=1722 [2022-03-15 13:56:26,764 INFO L87 Difference]: Start difference. First operand 14459 states and 41355 transitions. Second operand has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:29,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:56:29,168 INFO L93 Difference]: Finished difference Result 39442 states and 113945 transitions. [2022-03-15 13:56:29,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 13:56:29,169 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:56:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:56:29,254 INFO L225 Difference]: With dead ends: 39442 [2022-03-15 13:56:29,254 INFO L226 Difference]: Without dead ends: 39442 [2022-03-15 13:56:29,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 343 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1505, Invalid=6330, Unknown=1, NotChecked=174, Total=8010 [2022-03-15 13:56:29,255 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 2213 mSDsluCounter, 8184 mSDsCounter, 0 mSdLazyCounter, 2078 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2213 SdHoareTripleChecker+Valid, 8561 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 890 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:56:29,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2213 Valid, 8561 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2078 Invalid, 0 Unknown, 890 Unchecked, 0.8s Time] [2022-03-15 13:56:29,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39442 states. [2022-03-15 13:56:29,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39442 to 15871. [2022-03-15 13:56:29,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15871 states, 15870 states have (on average 2.877441713925646) internal successors, (45665), 15870 states have internal predecessors, (45665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15871 states to 15871 states and 45665 transitions. [2022-03-15 13:56:29,692 INFO L78 Accepts]: Start accepts. Automaton has 15871 states and 45665 transitions. Word has length 177 [2022-03-15 13:56:29,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:29,692 INFO L470 AbstractCegarLoop]: Abstraction has 15871 states and 45665 transitions. [2022-03-15 13:56:29,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:29,692 INFO L276 IsEmpty]: Start isEmpty. Operand 15871 states and 45665 transitions. [2022-03-15 13:56:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:29,715 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:29,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:29,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-15 13:56:29,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:56:29,929 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:29,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:29,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1955471522, now seen corresponding path program 25 times [2022-03-15 13:56:29,929 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:29,929 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226355366] [2022-03-15 13:56:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:29,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:30,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:30,437 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:30,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226355366] [2022-03-15 13:56:30,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226355366] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:56:30,438 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:56:30,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:56:30,438 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223918176] [2022-03-15 13:56:30,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:56:30,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:56:30,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:30,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:56:30,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:56:30,438 INFO L87 Difference]: Start difference. First operand 15871 states and 45665 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:31,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:56:31,249 INFO L93 Difference]: Finished difference Result 25244 states and 72978 transitions. [2022-03-15 13:56:31,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:56:31,249 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:56:31,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:56:31,304 INFO L225 Difference]: With dead ends: 25244 [2022-03-15 13:56:31,305 INFO L226 Difference]: Without dead ends: 25244 [2022-03-15 13:56:31,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=403, Invalid=1577, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 13:56:31,305 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1145 mSDsluCounter, 3095 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 3393 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:56:31,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 3393 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:56:31,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25244 states. [2022-03-15 13:56:31,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25244 to 15887. [2022-03-15 13:56:31,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15887 states, 15886 states have (on average 2.877816945738386) internal successors, (45717), 15886 states have internal predecessors, (45717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:31,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15887 states to 15887 states and 45717 transitions. [2022-03-15 13:56:31,648 INFO L78 Accepts]: Start accepts. Automaton has 15887 states and 45717 transitions. Word has length 177 [2022-03-15 13:56:31,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:31,648 INFO L470 AbstractCegarLoop]: Abstraction has 15887 states and 45717 transitions. [2022-03-15 13:56:31,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 15887 states and 45717 transitions. [2022-03-15 13:56:31,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:31,672 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:31,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:31,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-03-15 13:56:31,672 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:31,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:31,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1767591432, now seen corresponding path program 25 times [2022-03-15 13:56:31,673 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:31,673 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28126758] [2022-03-15 13:56:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:31,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:32,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:32,129 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:32,129 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28126758] [2022-03-15 13:56:32,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28126758] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:56:32,129 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:56:32,129 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:56:32,129 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507266417] [2022-03-15 13:56:32,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:56:32,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:56:32,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:32,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:56:32,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:56:32,130 INFO L87 Difference]: Start difference. First operand 15887 states and 45717 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:32,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:56:32,773 INFO L93 Difference]: Finished difference Result 24684 states and 71162 transitions. [2022-03-15 13:56:32,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:56:32,773 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:56:32,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:56:32,825 INFO L225 Difference]: With dead ends: 24684 [2022-03-15 13:56:32,825 INFO L226 Difference]: Without dead ends: 24684 [2022-03-15 13:56:32,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=399, Invalid=1493, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 13:56:32,826 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1112 mSDsluCounter, 3337 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:56:32,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1112 Valid, 3627 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:56:32,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24684 states. [2022-03-15 13:56:33,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24684 to 15451. [2022-03-15 13:56:33,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15451 states, 15450 states have (on average 2.8645307443365695) internal successors, (44257), 15450 states have internal predecessors, (44257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:33,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15451 states to 15451 states and 44257 transitions. [2022-03-15 13:56:33,165 INFO L78 Accepts]: Start accepts. Automaton has 15451 states and 44257 transitions. Word has length 177 [2022-03-15 13:56:33,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:33,166 INFO L470 AbstractCegarLoop]: Abstraction has 15451 states and 44257 transitions. [2022-03-15 13:56:33,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:33,166 INFO L276 IsEmpty]: Start isEmpty. Operand 15451 states and 44257 transitions. [2022-03-15 13:56:33,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:33,190 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:33,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:33,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-03-15 13:56:33,191 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:33,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:33,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1131634966, now seen corresponding path program 33 times [2022-03-15 13:56:33,191 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:33,191 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214426008] [2022-03-15 13:56:33,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:33,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:33,696 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:33,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214426008] [2022-03-15 13:56:33,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214426008] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:56:33,696 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:56:33,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:56:33,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062044681] [2022-03-15 13:56:33,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:56:33,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:56:33,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:33,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:56:33,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:56:33,697 INFO L87 Difference]: Start difference. First operand 15451 states and 44257 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:34,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:56:34,491 INFO L93 Difference]: Finished difference Result 22732 states and 65502 transitions. [2022-03-15 13:56:34,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 13:56:34,492 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:56:34,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:56:34,537 INFO L225 Difference]: With dead ends: 22732 [2022-03-15 13:56:34,537 INFO L226 Difference]: Without dead ends: 22732 [2022-03-15 13:56:34,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=497, Invalid=1759, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 13:56:34,538 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1555 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2982 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:56:34,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 2982 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:56:34,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22732 states. [2022-03-15 13:56:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22732 to 14523. [2022-03-15 13:56:34,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14523 states, 14522 states have (on average 2.8642748932653905) internal successors, (41595), 14522 states have internal predecessors, (41595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:34,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14523 states to 14523 states and 41595 transitions. [2022-03-15 13:56:34,855 INFO L78 Accepts]: Start accepts. Automaton has 14523 states and 41595 transitions. Word has length 177 [2022-03-15 13:56:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:34,855 INFO L470 AbstractCegarLoop]: Abstraction has 14523 states and 41595 transitions. [2022-03-15 13:56:34,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:34,855 INFO L276 IsEmpty]: Start isEmpty. Operand 14523 states and 41595 transitions. [2022-03-15 13:56:34,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:34,877 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:34,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:34,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-03-15 13:56:34,877 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:34,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:34,878 INFO L85 PathProgramCache]: Analyzing trace with hash -668060224, now seen corresponding path program 19 times [2022-03-15 13:56:34,878 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:34,878 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753907902] [2022-03-15 13:56:34,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:34,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:35,361 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:35,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753907902] [2022-03-15 13:56:35,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753907902] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:56:35,361 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:56:35,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:56:35,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084150271] [2022-03-15 13:56:35,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:56:35,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:56:35,361 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:35,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:56:35,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:56:35,362 INFO L87 Difference]: Start difference. First operand 14523 states and 41595 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:36,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:56:36,016 INFO L93 Difference]: Finished difference Result 22972 states and 66162 transitions. [2022-03-15 13:56:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 13:56:36,016 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:56:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:56:36,062 INFO L225 Difference]: With dead ends: 22972 [2022-03-15 13:56:36,062 INFO L226 Difference]: Without dead ends: 22972 [2022-03-15 13:56:36,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=491, Invalid=1671, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 13:56:36,063 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1325 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 3222 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:56:36,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1325 Valid, 3222 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:56:36,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22972 states. [2022-03-15 13:56:36,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22972 to 14457. [2022-03-15 13:56:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14457 states, 14456 states have (on average 2.860334809075816) internal successors, (41349), 14456 states have internal predecessors, (41349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14457 states to 14457 states and 41349 transitions. [2022-03-15 13:56:36,367 INFO L78 Accepts]: Start accepts. Automaton has 14457 states and 41349 transitions. Word has length 177 [2022-03-15 13:56:36,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:56:36,367 INFO L470 AbstractCegarLoop]: Abstraction has 14457 states and 41349 transitions. [2022-03-15 13:56:36,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:56:36,367 INFO L276 IsEmpty]: Start isEmpty. Operand 14457 states and 41349 transitions. [2022-03-15 13:56:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:56:36,389 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:56:36,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:56:36,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-03-15 13:56:36,390 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:56:36,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:56:36,390 INFO L85 PathProgramCache]: Analyzing trace with hash -345015716, now seen corresponding path program 34 times [2022-03-15 13:56:36,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:56:36,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746500738] [2022-03-15 13:56:36,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:56:36,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:56:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:56:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:56:36,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:56:36,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746500738] [2022-03-15 13:56:36,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746500738] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:56:36,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150904481] [2022-03-15 13:56:36,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 13:56:36,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:56:36,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:56:36,690 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:56:36,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-15 13:56:36,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 13:56:36,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:56:36,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-15 13:56:36,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:56:36,897 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:56:37,000 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:56:37,001 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:56:37,288 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:56:37,410 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:56:37,514 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:56:37,847 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-15 13:56:37,847 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-15 13:56:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:56:37,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:56:38,624 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:56:38,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 56 [2022-03-15 13:56:38,629 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-15 13:56:38,630 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 851 treesize of output 739 [2022-03-15 13:56:38,642 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:56:38,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 739 treesize of output 667 [2022-03-15 13:56:38,656 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:56:38,656 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 659 treesize of output 611 [2022-03-15 13:56:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:56:44,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150904481] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:56:44,047 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:56:44,047 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 24] total 69 [2022-03-15 13:56:44,047 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150604652] [2022-03-15 13:56:44,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:56:44,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-03-15 13:56:44,048 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:56:44,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-03-15 13:56:44,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=4136, Unknown=123, NotChecked=0, Total=4692 [2022-03-15 13:56:44,048 INFO L87 Difference]: Start difference. First operand 14457 states and 41349 transitions. Second operand has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:01,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:01,016 INFO L93 Difference]: Finished difference Result 80843 states and 231171 transitions. [2022-03-15 13:57:01,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-03-15 13:57:01,017 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:01,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:01,215 INFO L225 Difference]: With dead ends: 80843 [2022-03-15 13:57:01,215 INFO L226 Difference]: Without dead ends: 80843 [2022-03-15 13:57:01,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 311 SyntacticMatches, 24 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 12816 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=8117, Invalid=30372, Unknown=123, NotChecked=0, Total=38612 [2022-03-15 13:57:01,217 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 5481 mSDsluCounter, 20147 mSDsCounter, 0 mSdLazyCounter, 4629 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5481 SdHoareTripleChecker+Valid, 20290 SdHoareTripleChecker+Invalid, 8541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 4629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3857 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:01,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5481 Valid, 20290 Invalid, 8541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 4629 Invalid, 0 Unknown, 3857 Unchecked, 1.8s Time] [2022-03-15 13:57:01,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80843 states. [2022-03-15 13:57:02,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80843 to 18715. [2022-03-15 13:57:02,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18715 states, 18714 states have (on average 2.889868547611414) internal successors, (54081), 18714 states have internal predecessors, (54081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18715 states to 18715 states and 54081 transitions. [2022-03-15 13:57:02,092 INFO L78 Accepts]: Start accepts. Automaton has 18715 states and 54081 transitions. Word has length 177 [2022-03-15 13:57:02,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:02,092 INFO L470 AbstractCegarLoop]: Abstraction has 18715 states and 54081 transitions. [2022-03-15 13:57:02,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand 18715 states and 54081 transitions. [2022-03-15 13:57:02,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:02,121 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:02,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:02,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-15 13:57:02,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-03-15 13:57:02,332 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:02,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1276711498, now seen corresponding path program 26 times [2022-03-15 13:57:02,332 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:02,332 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162345383] [2022-03-15 13:57:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:02,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:02,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:02,770 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:02,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162345383] [2022-03-15 13:57:02,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162345383] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:57:02,771 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:57:02,771 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:57:02,771 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165173525] [2022-03-15 13:57:02,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:57:02,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:57:02,771 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:02,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:57:02,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:57:02,771 INFO L87 Difference]: Start difference. First operand 18715 states and 54081 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:03,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:03,908 INFO L93 Difference]: Finished difference Result 32931 states and 94897 transitions. [2022-03-15 13:57:03,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 13:57:03,908 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:03,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:03,989 INFO L225 Difference]: With dead ends: 32931 [2022-03-15 13:57:03,989 INFO L226 Difference]: Without dead ends: 32931 [2022-03-15 13:57:03,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=590, Invalid=2062, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 13:57:03,990 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 1430 mSDsluCounter, 3690 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 4007 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:03,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1430 Valid, 4007 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 13:57:04,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32931 states. [2022-03-15 13:57:04,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32931 to 18715. [2022-03-15 13:57:04,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18715 states, 18714 states have (on average 2.889868547611414) internal successors, (54081), 18714 states have internal predecessors, (54081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18715 states to 18715 states and 54081 transitions. [2022-03-15 13:57:04,444 INFO L78 Accepts]: Start accepts. Automaton has 18715 states and 54081 transitions. Word has length 177 [2022-03-15 13:57:04,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:04,444 INFO L470 AbstractCegarLoop]: Abstraction has 18715 states and 54081 transitions. [2022-03-15 13:57:04,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:04,444 INFO L276 IsEmpty]: Start isEmpty. Operand 18715 states and 54081 transitions. [2022-03-15 13:57:04,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:04,473 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:04,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:04,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-03-15 13:57:04,473 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:04,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:04,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1439000424, now seen corresponding path program 27 times [2022-03-15 13:57:04,473 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:04,473 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362574358] [2022-03-15 13:57:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:04,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:04,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:04,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:04,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:04,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362574358] [2022-03-15 13:57:04,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362574358] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:57:04,852 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:57:04,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:57:04,852 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925953674] [2022-03-15 13:57:04,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:57:04,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:57:04,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:04,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:57:04,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:57:04,852 INFO L87 Difference]: Start difference. First operand 18715 states and 54081 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:05,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:05,841 INFO L93 Difference]: Finished difference Result 29598 states and 85618 transitions. [2022-03-15 13:57:05,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 13:57:05,842 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:05,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:05,902 INFO L225 Difference]: With dead ends: 29598 [2022-03-15 13:57:05,902 INFO L226 Difference]: Without dead ends: 29598 [2022-03-15 13:57:05,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=539, Invalid=1911, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 13:57:05,903 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1279 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 3453 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:05,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 3453 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:57:05,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29598 states. [2022-03-15 13:57:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29598 to 18723. [2022-03-15 13:57:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18723 states, 18722 states have (on average 2.89023608588826) internal successors, (54111), 18722 states have internal predecessors, (54111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18723 states to 18723 states and 54111 transitions. [2022-03-15 13:57:06,281 INFO L78 Accepts]: Start accepts. Automaton has 18723 states and 54111 transitions. Word has length 177 [2022-03-15 13:57:06,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:06,281 INFO L470 AbstractCegarLoop]: Abstraction has 18723 states and 54111 transitions. [2022-03-15 13:57:06,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:06,282 INFO L276 IsEmpty]: Start isEmpty. Operand 18723 states and 54111 transitions. [2022-03-15 13:57:06,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:06,309 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:06,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:06,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-03-15 13:57:06,309 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:06,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:06,309 INFO L85 PathProgramCache]: Analyzing trace with hash -611737924, now seen corresponding path program 35 times [2022-03-15 13:57:06,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:06,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645535740] [2022-03-15 13:57:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:06,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:06,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:06,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645535740] [2022-03-15 13:57:06,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645535740] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:57:06,731 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:57:06,731 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:57:06,731 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255214073] [2022-03-15 13:57:06,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:57:06,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:57:06,732 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:06,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:57:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:57:06,732 INFO L87 Difference]: Start difference. First operand 18723 states and 54111 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:07,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:07,436 INFO L93 Difference]: Finished difference Result 28664 states and 82908 transitions. [2022-03-15 13:57:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 13:57:07,437 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:07,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:07,501 INFO L225 Difference]: With dead ends: 28664 [2022-03-15 13:57:07,501 INFO L226 Difference]: Without dead ends: 28664 [2022-03-15 13:57:07,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=531, Invalid=1821, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 13:57:07,502 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1254 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:07,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 2985 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:57:07,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28664 states. [2022-03-15 13:57:07,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28664 to 18755. [2022-03-15 13:57:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18755 states, 18754 states have (on average 2.889996800682521) internal successors, (54199), 18754 states have internal predecessors, (54199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:08,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18755 states to 18755 states and 54199 transitions. [2022-03-15 13:57:08,253 INFO L78 Accepts]: Start accepts. Automaton has 18755 states and 54199 transitions. Word has length 177 [2022-03-15 13:57:08,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:08,254 INFO L470 AbstractCegarLoop]: Abstraction has 18755 states and 54199 transitions. [2022-03-15 13:57:08,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:08,254 INFO L276 IsEmpty]: Start isEmpty. Operand 18755 states and 54199 transitions. [2022-03-15 13:57:08,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:08,283 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:08,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:08,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-03-15 13:57:08,284 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:08,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:08,285 INFO L85 PathProgramCache]: Analyzing trace with hash 916905704, now seen corresponding path program 36 times [2022-03-15 13:57:08,285 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:08,285 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441620710] [2022-03-15 13:57:08,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:08,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:08,571 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:08,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441620710] [2022-03-15 13:57:08,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441620710] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:57:08,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331992856] [2022-03-15 13:57:08,571 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 13:57:08,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:57:08,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:57:08,572 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:57:08,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-15 13:57:08,705 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 13:57:08,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:57:08,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-15 13:57:08,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:57:08,734 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:57:08,786 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:57:08,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:57:09,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:57:09,357 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:57:09,358 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-15 13:57:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:09,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:57:09,609 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_2663 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2663))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (< (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))) |c_thread1Thread1of1ForFork0_#t~mem2|) (<= (select (select .cse1 c_~get1~0.base) c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-15 13:57:09,645 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-15 13:57:09,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 128 [2022-03-15 13:57:09,661 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:57:09,661 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 81 [2022-03-15 13:57:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:10,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331992856] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:57:10,542 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:57:10,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 42 [2022-03-15 13:57:10,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830934079] [2022-03-15 13:57:10,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:57:10,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 13:57:10,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:10,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 13:57:10,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1494, Unknown=1, NotChecked=78, Total=1722 [2022-03-15 13:57:10,543 INFO L87 Difference]: Start difference. First operand 18755 states and 54199 transitions. Second operand has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:12,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:12,224 INFO L93 Difference]: Finished difference Result 31402 states and 90048 transitions. [2022-03-15 13:57:12,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-15 13:57:12,225 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:12,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:12,298 INFO L225 Difference]: With dead ends: 31402 [2022-03-15 13:57:12,298 INFO L226 Difference]: Without dead ends: 31402 [2022-03-15 13:57:12,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 346 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1587 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1299, Invalid=6014, Unknown=1, NotChecked=168, Total=7482 [2022-03-15 13:57:12,299 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 2136 mSDsluCounter, 6443 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 6731 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 882 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:12,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2136 Valid, 6731 Invalid, 2609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1711 Invalid, 0 Unknown, 882 Unchecked, 0.5s Time] [2022-03-15 13:57:12,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31402 states. [2022-03-15 13:57:12,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31402 to 19627. [2022-03-15 13:57:12,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19627 states, 19626 states have (on average 2.8935595638438807) internal successors, (56789), 19626 states have internal predecessors, (56789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19627 states to 19627 states and 56789 transitions. [2022-03-15 13:57:12,752 INFO L78 Accepts]: Start accepts. Automaton has 19627 states and 56789 transitions. Word has length 177 [2022-03-15 13:57:12,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:12,753 INFO L470 AbstractCegarLoop]: Abstraction has 19627 states and 56789 transitions. [2022-03-15 13:57:12,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:12,753 INFO L276 IsEmpty]: Start isEmpty. Operand 19627 states and 56789 transitions. [2022-03-15 13:57:12,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:12,783 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:12,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:12,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-15 13:57:12,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-03-15 13:57:12,991 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:12,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:12,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1159624690, now seen corresponding path program 28 times [2022-03-15 13:57:12,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:12,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402696159] [2022-03-15 13:57:12,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:12,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:13,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:13,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402696159] [2022-03-15 13:57:13,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402696159] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:57:13,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:57:13,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:57:13,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977240592] [2022-03-15 13:57:13,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:57:13,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:57:13,732 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:13,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:57:13,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:57:13,733 INFO L87 Difference]: Start difference. First operand 19627 states and 56789 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:14,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:14,614 INFO L93 Difference]: Finished difference Result 29886 states and 86430 transitions. [2022-03-15 13:57:14,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:57:14,615 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:14,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:14,683 INFO L225 Difference]: With dead ends: 29886 [2022-03-15 13:57:14,683 INFO L226 Difference]: Without dead ends: 29886 [2022-03-15 13:57:14,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=461, Invalid=1701, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 13:57:14,684 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 1139 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:14,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1139 Valid, 3369 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:57:14,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29886 states. [2022-03-15 13:57:15,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29886 to 19643. [2022-03-15 13:57:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19643 states, 19642 states have (on average 2.8942572039507177) internal successors, (56849), 19642 states have internal predecessors, (56849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19643 states to 19643 states and 56849 transitions. [2022-03-15 13:57:15,091 INFO L78 Accepts]: Start accepts. Automaton has 19643 states and 56849 transitions. Word has length 177 [2022-03-15 13:57:15,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:15,091 INFO L470 AbstractCegarLoop]: Abstraction has 19643 states and 56849 transitions. [2022-03-15 13:57:15,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:15,091 INFO L276 IsEmpty]: Start isEmpty. Operand 19643 states and 56849 transitions. [2022-03-15 13:57:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:15,120 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:15,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:15,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-03-15 13:57:15,120 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:15,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:15,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1445824888, now seen corresponding path program 37 times [2022-03-15 13:57:15,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:15,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787000369] [2022-03-15 13:57:15,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:15,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:15,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:15,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787000369] [2022-03-15 13:57:15,493 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787000369] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:57:15,493 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:57:15,493 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:57:15,493 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189938232] [2022-03-15 13:57:15,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:57:15,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:57:15,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:15,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:57:15,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:57:15,493 INFO L87 Difference]: Start difference. First operand 19643 states and 56849 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:16,288 INFO L93 Difference]: Finished difference Result 29396 states and 85042 transitions. [2022-03-15 13:57:16,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:57:16,288 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:16,347 INFO L225 Difference]: With dead ends: 29396 [2022-03-15 13:57:16,347 INFO L226 Difference]: Without dead ends: 29396 [2022-03-15 13:57:16,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=455, Invalid=1615, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 13:57:16,347 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 1140 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2949 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:16,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 2949 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:57:16,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29396 states. [2022-03-15 13:57:16,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29396 to 19651. [2022-03-15 13:57:16,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19651 states, 19650 states have (on average 2.894198473282443) internal successors, (56871), 19650 states have internal predecessors, (56871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:16,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19651 states to 19651 states and 56871 transitions. [2022-03-15 13:57:16,687 INFO L78 Accepts]: Start accepts. Automaton has 19651 states and 56871 transitions. Word has length 177 [2022-03-15 13:57:16,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:16,687 INFO L470 AbstractCegarLoop]: Abstraction has 19651 states and 56871 transitions. [2022-03-15 13:57:16,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:16,687 INFO L276 IsEmpty]: Start isEmpty. Operand 19651 states and 56871 transitions. [2022-03-15 13:57:16,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:16,716 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:16,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:16,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-03-15 13:57:16,717 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:16,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:16,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1927481798, now seen corresponding path program 38 times [2022-03-15 13:57:16,717 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:16,717 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268859990] [2022-03-15 13:57:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:16,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:17,185 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:17,185 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268859990] [2022-03-15 13:57:17,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268859990] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:57:17,185 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:57:17,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:57:17,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306843810] [2022-03-15 13:57:17,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:57:17,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:57:17,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:17,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:57:17,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:57:17,186 INFO L87 Difference]: Start difference. First operand 19651 states and 56871 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:18,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:18,162 INFO L93 Difference]: Finished difference Result 28870 states and 83552 transitions. [2022-03-15 13:57:18,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:57:18,163 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:18,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:18,223 INFO L225 Difference]: With dead ends: 28870 [2022-03-15 13:57:18,224 INFO L226 Difference]: Without dead ends: 28870 [2022-03-15 13:57:18,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=474, Invalid=1688, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 13:57:18,224 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1360 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:18,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1360 Valid, 2943 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:57:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28870 states. [2022-03-15 13:57:18,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28870 to 19643. [2022-03-15 13:57:18,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19643 states, 19642 states have (on average 2.8942572039507177) internal successors, (56849), 19642 states have internal predecessors, (56849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19643 states to 19643 states and 56849 transitions. [2022-03-15 13:57:18,623 INFO L78 Accepts]: Start accepts. Automaton has 19643 states and 56849 transitions. Word has length 177 [2022-03-15 13:57:18,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:18,624 INFO L470 AbstractCegarLoop]: Abstraction has 19643 states and 56849 transitions. [2022-03-15 13:57:18,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 19643 states and 56849 transitions. [2022-03-15 13:57:18,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:18,654 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:18,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:18,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-03-15 13:57:18,654 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:18,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1463907056, now seen corresponding path program 20 times [2022-03-15 13:57:18,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:18,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177353157] [2022-03-15 13:57:18,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:18,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:19,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:19,161 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:19,162 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177353157] [2022-03-15 13:57:19,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177353157] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:57:19,162 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:57:19,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:57:19,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099009117] [2022-03-15 13:57:19,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:57:19,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:57:19,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:19,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:57:19,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:57:19,162 INFO L87 Difference]: Start difference. First operand 19643 states and 56849 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:20,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:20,049 INFO L93 Difference]: Finished difference Result 28944 states and 83786 transitions. [2022-03-15 13:57:20,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:57:20,049 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:20,116 INFO L225 Difference]: With dead ends: 28944 [2022-03-15 13:57:20,116 INFO L226 Difference]: Without dead ends: 28944 [2022-03-15 13:57:20,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=468, Invalid=1602, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 13:57:20,117 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1161 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 3341 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:20,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1161 Valid, 3341 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:57:20,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28944 states. [2022-03-15 13:57:20,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28944 to 19603. [2022-03-15 13:57:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19603 states, 19602 states have (on average 2.892612998673605) internal successors, (56701), 19602 states have internal predecessors, (56701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:20,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19603 states to 19603 states and 56701 transitions. [2022-03-15 13:57:20,690 INFO L78 Accepts]: Start accepts. Automaton has 19603 states and 56701 transitions. Word has length 177 [2022-03-15 13:57:20,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:20,690 INFO L470 AbstractCegarLoop]: Abstraction has 19603 states and 56701 transitions. [2022-03-15 13:57:20,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:20,691 INFO L276 IsEmpty]: Start isEmpty. Operand 19603 states and 56701 transitions. [2022-03-15 13:57:20,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:20,721 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:20,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:20,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-03-15 13:57:20,722 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:20,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:20,723 INFO L85 PathProgramCache]: Analyzing trace with hash -668146084, now seen corresponding path program 26 times [2022-03-15 13:57:20,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:20,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933427708] [2022-03-15 13:57:20,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:20,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:21,082 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:21,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933427708] [2022-03-15 13:57:21,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933427708] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:57:21,082 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:57:21,082 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:57:21,082 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273885988] [2022-03-15 13:57:21,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:57:21,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:57:21,082 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:21,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:57:21,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:57:21,083 INFO L87 Difference]: Start difference. First operand 19603 states and 56701 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:21,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:21,963 INFO L93 Difference]: Finished difference Result 29958 states and 86552 transitions. [2022-03-15 13:57:21,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 13:57:21,963 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:21,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:22,027 INFO L225 Difference]: With dead ends: 29958 [2022-03-15 13:57:22,028 INFO L226 Difference]: Without dead ends: 29958 [2022-03-15 13:57:22,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=581, Invalid=1969, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 13:57:22,028 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1181 mSDsluCounter, 3090 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 3406 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:22,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 3406 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:57:22,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29958 states. [2022-03-15 13:57:22,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29958 to 19561. [2022-03-15 13:57:22,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19561 states, 19560 states have (on average 2.892075664621677) internal successors, (56569), 19560 states have internal predecessors, (56569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19561 states to 19561 states and 56569 transitions. [2022-03-15 13:57:22,469 INFO L78 Accepts]: Start accepts. Automaton has 19561 states and 56569 transitions. Word has length 177 [2022-03-15 13:57:22,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:22,469 INFO L470 AbstractCegarLoop]: Abstraction has 19561 states and 56569 transitions. [2022-03-15 13:57:22,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:22,470 INFO L276 IsEmpty]: Start isEmpty. Operand 19561 states and 56569 transitions. [2022-03-15 13:57:22,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:22,499 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:22,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:22,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-03-15 13:57:22,499 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:22,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:22,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1696693896, now seen corresponding path program 27 times [2022-03-15 13:57:22,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:22,499 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204309045] [2022-03-15 13:57:22,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:22,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:22,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:22,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204309045] [2022-03-15 13:57:22,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204309045] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:57:22,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053375698] [2022-03-15 13:57:22,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 13:57:22,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:57:22,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:57:22,926 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:57:22,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-15 13:57:23,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 13:57:23,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:57:23,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-15 13:57:23,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:57:23,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:57:23,199 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:57:23,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:57:23,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:57:23,755 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:57:23,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:57:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:23,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:57:24,011 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2777 (Array Int Int)) (~get2~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2777))) (let ((.cse1 (select .cse0 ~get2~0.base))) (or (= (select (select .cse0 c_~get1~0.base) c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (not (= |c_thread1Thread1of1ForFork0_#t~mem2| (select .cse1 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))))))))) is different from false [2022-03-15 13:57:24,051 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-15 13:57:24,051 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 114 treesize of output 131 [2022-03-15 13:57:24,068 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:57:24,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 92 [2022-03-15 13:57:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:24,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053375698] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:57:24,735 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:57:24,735 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 41 [2022-03-15 13:57:24,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248457520] [2022-03-15 13:57:24,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:57:24,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 13:57:24,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:24,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 13:57:24,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1397, Unknown=1, NotChecked=76, Total=1640 [2022-03-15 13:57:24,736 INFO L87 Difference]: Start difference. First operand 19561 states and 56569 transitions. Second operand has 41 states, 41 states have (on average 7.7317073170731705) internal successors, (317), 41 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:26,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:26,979 INFO L93 Difference]: Finished difference Result 37391 states and 107919 transitions. [2022-03-15 13:57:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 13:57:26,979 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.7317073170731705) internal successors, (317), 41 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:26,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:27,068 INFO L225 Difference]: With dead ends: 37391 [2022-03-15 13:57:27,068 INFO L226 Difference]: Without dead ends: 37391 [2022-03-15 13:57:27,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1366, Invalid=5609, Unknown=1, NotChecked=164, Total=7140 [2022-03-15 13:57:27,069 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 2500 mSDsluCounter, 7750 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 8044 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 799 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:27,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2500 Valid, 8044 Invalid, 3004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2178 Invalid, 0 Unknown, 799 Unchecked, 0.8s Time] [2022-03-15 13:57:27,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37391 states. [2022-03-15 13:57:27,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37391 to 18717. [2022-03-15 13:57:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18717 states, 18716 states have (on average 2.888597991023723) internal successors, (54063), 18716 states have internal predecessors, (54063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:27,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 54063 transitions. [2022-03-15 13:57:27,584 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 54063 transitions. Word has length 177 [2022-03-15 13:57:27,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:27,585 INFO L470 AbstractCegarLoop]: Abstraction has 18717 states and 54063 transitions. [2022-03-15 13:57:27,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.7317073170731705) internal successors, (317), 41 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:27,585 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 54063 transitions. [2022-03-15 13:57:27,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:27,617 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:27,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:27,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-15 13:57:27,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-03-15 13:57:27,838 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:27,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:27,838 INFO L85 PathProgramCache]: Analyzing trace with hash 100811472, now seen corresponding path program 29 times [2022-03-15 13:57:27,838 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:27,838 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674862818] [2022-03-15 13:57:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:27,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:28,345 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:28,346 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674862818] [2022-03-15 13:57:28,346 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674862818] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:57:28,346 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:57:28,346 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:57:28,346 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411661143] [2022-03-15 13:57:28,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:57:28,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:57:28,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:28,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:57:28,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:57:28,346 INFO L87 Difference]: Start difference. First operand 18717 states and 54063 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:29,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:29,325 INFO L93 Difference]: Finished difference Result 28760 states and 83026 transitions. [2022-03-15 13:57:29,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 13:57:29,325 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:29,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:29,388 INFO L225 Difference]: With dead ends: 28760 [2022-03-15 13:57:29,388 INFO L226 Difference]: Without dead ends: 28760 [2022-03-15 13:57:29,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=510, Invalid=1842, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 13:57:29,389 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1196 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:29,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1196 Valid, 3291 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:57:29,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28760 states. [2022-03-15 13:57:29,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28760 to 18717. [2022-03-15 13:57:29,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18717 states, 18716 states have (on average 2.888597991023723) internal successors, (54063), 18716 states have internal predecessors, (54063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 54063 transitions. [2022-03-15 13:57:29,781 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 54063 transitions. Word has length 177 [2022-03-15 13:57:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:29,781 INFO L470 AbstractCegarLoop]: Abstraction has 18717 states and 54063 transitions. [2022-03-15 13:57:29,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:29,782 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 54063 transitions. [2022-03-15 13:57:29,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:29,811 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:29,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:29,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-03-15 13:57:29,812 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:29,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:29,812 INFO L85 PathProgramCache]: Analyzing trace with hash 928073972, now seen corresponding path program 39 times [2022-03-15 13:57:29,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:29,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063661569] [2022-03-15 13:57:29,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:29,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:30,175 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:30,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063661569] [2022-03-15 13:57:30,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063661569] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:57:30,176 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:57:30,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:57:30,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951331169] [2022-03-15 13:57:30,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:57:30,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:57:30,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:30,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:57:30,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:57:30,176 INFO L87 Difference]: Start difference. First operand 18717 states and 54063 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:30,898 INFO L93 Difference]: Finished difference Result 27802 states and 80242 transitions. [2022-03-15 13:57:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 13:57:30,898 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:30,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:30,961 INFO L225 Difference]: With dead ends: 27802 [2022-03-15 13:57:30,962 INFO L226 Difference]: Without dead ends: 27802 [2022-03-15 13:57:30,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=503, Invalid=1753, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 13:57:30,962 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1123 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 3080 SdHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:30,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 3080 Invalid, 1139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:57:30,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27802 states. [2022-03-15 13:57:31,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27802 to 18741. [2022-03-15 13:57:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18741 states, 18740 states have (on average 2.888740661686233) internal successors, (54135), 18740 states have internal predecessors, (54135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18741 states to 18741 states and 54135 transitions. [2022-03-15 13:57:31,340 INFO L78 Accepts]: Start accepts. Automaton has 18741 states and 54135 transitions. Word has length 177 [2022-03-15 13:57:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:31,340 INFO L470 AbstractCegarLoop]: Abstraction has 18741 states and 54135 transitions. [2022-03-15 13:57:31,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand 18741 states and 54135 transitions. [2022-03-15 13:57:31,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:31,367 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:31,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:31,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-03-15 13:57:31,368 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:31,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:31,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1838249696, now seen corresponding path program 40 times [2022-03-15 13:57:31,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:31,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133400302] [2022-03-15 13:57:31,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:31,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:31,780 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:31,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133400302] [2022-03-15 13:57:31,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133400302] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:57:31,780 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981592481] [2022-03-15 13:57:31,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 13:57:31,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:57:31,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:57:31,782 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:57:31,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-15 13:57:31,956 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 13:57:31,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:57:31,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-15 13:57:31,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:57:32,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:57:32,158 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:57:32,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:57:32,564 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:57:32,721 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:57:32,866 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:57:33,422 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-15 13:57:33,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-15 13:57:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:57:33,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:57:34,291 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:57:34,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 56 [2022-03-15 13:57:34,299 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-15 13:57:34,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1427 treesize of output 1251 [2022-03-15 13:57:34,314 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:57:34,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1251 treesize of output 1115 [2022-03-15 13:57:34,332 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:57:34,332 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1107 treesize of output 1027 [2022-03-15 13:57:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:57:46,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981592481] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:57:46,340 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:57:46,340 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 24] total 69 [2022-03-15 13:57:46,340 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87634020] [2022-03-15 13:57:46,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:57:46,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-03-15 13:57:46,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:46,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-03-15 13:57:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=4212, Unknown=97, NotChecked=0, Total=4692 [2022-03-15 13:57:46,341 INFO L87 Difference]: Start difference. First operand 18741 states and 54135 transitions. Second operand has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:55,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:55,056 INFO L93 Difference]: Finished difference Result 61799 states and 178156 transitions. [2022-03-15 13:57:55,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-03-15 13:57:55,056 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:55,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:55,229 INFO L225 Difference]: With dead ends: 61799 [2022-03-15 13:57:55,229 INFO L226 Difference]: Without dead ends: 61799 [2022-03-15 13:57:55,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 310 SyntacticMatches, 17 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 6574 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=4569, Invalid=18590, Unknown=97, NotChecked=0, Total=23256 [2022-03-15 13:57:55,231 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 5492 mSDsluCounter, 13705 mSDsCounter, 0 mSdLazyCounter, 4172 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5492 SdHoareTripleChecker+Valid, 13881 SdHoareTripleChecker+Invalid, 5721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 4172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1496 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:55,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5492 Valid, 13881 Invalid, 5721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 4172 Invalid, 0 Unknown, 1496 Unchecked, 1.5s Time] [2022-03-15 13:57:55,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61799 states. [2022-03-15 13:57:55,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61799 to 19093. [2022-03-15 13:57:56,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19093 states, 19092 states have (on average 2.8942489000628537) internal successors, (55257), 19092 states have internal predecessors, (55257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19093 states to 19093 states and 55257 transitions. [2022-03-15 13:57:56,047 INFO L78 Accepts]: Start accepts. Automaton has 19093 states and 55257 transitions. Word has length 177 [2022-03-15 13:57:56,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:56,047 INFO L470 AbstractCegarLoop]: Abstraction has 19093 states and 55257 transitions. [2022-03-15 13:57:56,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 6.231884057971015) internal successors, (430), 69 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:56,047 INFO L276 IsEmpty]: Start isEmpty. Operand 19093 states and 55257 transitions. [2022-03-15 13:57:56,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:56,076 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:56,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:56,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-15 13:57:56,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-03-15 13:57:56,292 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:56,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:56,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1595530710, now seen corresponding path program 30 times [2022-03-15 13:57:56,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:56,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843094768] [2022-03-15 13:57:56,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:56,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:56,671 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:56,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843094768] [2022-03-15 13:57:56,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843094768] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:57:56,671 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:57:56,672 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:57:56,672 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141233813] [2022-03-15 13:57:56,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:57:56,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:57:56,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:56,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:57:56,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:57:56,672 INFO L87 Difference]: Start difference. First operand 19093 states and 55257 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:57,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:57,465 INFO L93 Difference]: Finished difference Result 28754 states and 83090 transitions. [2022-03-15 13:57:57,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:57:57,465 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:57,530 INFO L225 Difference]: With dead ends: 28754 [2022-03-15 13:57:57,531 INFO L226 Difference]: Without dead ends: 28754 [2022-03-15 13:57:57,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=1697, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 13:57:57,531 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 1099 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:57,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1099 Valid, 2980 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:57:57,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28754 states. [2022-03-15 13:57:57,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28754 to 19109. [2022-03-15 13:57:57,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19109 states, 19108 states have (on average 2.894965459493406) internal successors, (55317), 19108 states have internal predecessors, (55317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19109 states to 19109 states and 55317 transitions. [2022-03-15 13:57:57,946 INFO L78 Accepts]: Start accepts. Automaton has 19109 states and 55317 transitions. Word has length 177 [2022-03-15 13:57:57,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:57,946 INFO L470 AbstractCegarLoop]: Abstraction has 19109 states and 55317 transitions. [2022-03-15 13:57:57,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:57,947 INFO L276 IsEmpty]: Start isEmpty. Operand 19109 states and 55317 transitions. [2022-03-15 13:57:57,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:57,976 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:57,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:57,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-03-15 13:57:57,977 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:57,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:57,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1783410800, now seen corresponding path program 28 times [2022-03-15 13:57:57,977 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:57,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108288186] [2022-03-15 13:57:57,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:57,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:57:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:57:58,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:57:58,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108288186] [2022-03-15 13:57:58,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108288186] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:57:58,398 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:57:58,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:57:58,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114827849] [2022-03-15 13:57:58,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:57:58,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:57:58,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:57:58,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:57:58,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:57:58,399 INFO L87 Difference]: Start difference. First operand 19109 states and 55317 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:59,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:57:59,325 INFO L93 Difference]: Finished difference Result 28234 states and 81614 transitions. [2022-03-15 13:57:59,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:57:59,326 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:57:59,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:57:59,389 INFO L225 Difference]: With dead ends: 28234 [2022-03-15 13:57:59,390 INFO L226 Difference]: Without dead ends: 28234 [2022-03-15 13:57:59,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=459, Invalid=1611, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 13:57:59,390 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1121 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 3267 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:57:59,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 3267 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:57:59,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28234 states. [2022-03-15 13:57:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28234 to 19117. [2022-03-15 13:57:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19117 states, 19116 states have (on average 2.894904791797447) internal successors, (55339), 19116 states have internal predecessors, (55339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:59,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19117 states to 19117 states and 55339 transitions. [2022-03-15 13:57:59,751 INFO L78 Accepts]: Start accepts. Automaton has 19117 states and 55339 transitions. Word has length 177 [2022-03-15 13:57:59,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:57:59,751 INFO L470 AbstractCegarLoop]: Abstraction has 19117 states and 55339 transitions. [2022-03-15 13:57:59,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:57:59,751 INFO L276 IsEmpty]: Start isEmpty. Operand 19117 states and 55339 transitions. [2022-03-15 13:57:59,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:57:59,778 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:57:59,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:57:59,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-03-15 13:57:59,778 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:57:59,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:57:59,778 INFO L85 PathProgramCache]: Analyzing trace with hash -387669902, now seen corresponding path program 41 times [2022-03-15 13:57:59,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:57:59,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389540912] [2022-03-15 13:57:59,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:57:59,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:57:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:00,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:00,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:00,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389540912] [2022-03-15 13:58:00,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389540912] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:00,299 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:00,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:58:00,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151020478] [2022-03-15 13:58:00,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:00,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:58:00,299 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:00,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:58:00,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:58:00,300 INFO L87 Difference]: Start difference. First operand 19117 states and 55339 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:01,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:01,206 INFO L93 Difference]: Finished difference Result 27610 states and 79860 transitions. [2022-03-15 13:58:01,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:58:01,207 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:58:01,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:01,263 INFO L225 Difference]: With dead ends: 27610 [2022-03-15 13:58:01,264 INFO L226 Difference]: Without dead ends: 27610 [2022-03-15 13:58:01,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=474, Invalid=1688, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 13:58:01,264 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1219 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:01,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 2928 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:58:01,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27610 states. [2022-03-15 13:58:01,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27610 to 19109. [2022-03-15 13:58:01,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19109 states, 19108 states have (on average 2.894965459493406) internal successors, (55317), 19108 states have internal predecessors, (55317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:01,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19109 states to 19109 states and 55317 transitions. [2022-03-15 13:58:01,634 INFO L78 Accepts]: Start accepts. Automaton has 19109 states and 55317 transitions. Word has length 177 [2022-03-15 13:58:01,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:01,634 INFO L470 AbstractCegarLoop]: Abstraction has 19109 states and 55317 transitions. [2022-03-15 13:58:01,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:01,634 INFO L276 IsEmpty]: Start isEmpty. Operand 19109 states and 55317 transitions. [2022-03-15 13:58:01,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:58:01,661 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:01,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:01,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-03-15 13:58:01,662 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:58:01,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:01,662 INFO L85 PathProgramCache]: Analyzing trace with hash 75904840, now seen corresponding path program 21 times [2022-03-15 13:58:01,662 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:01,662 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223742644] [2022-03-15 13:58:01,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:01,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:02,087 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:02,087 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223742644] [2022-03-15 13:58:02,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223742644] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:02,087 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:02,087 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:58:02,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516655157] [2022-03-15 13:58:02,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:02,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:58:02,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:02,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:58:02,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:58:02,088 INFO L87 Difference]: Start difference. First operand 19109 states and 55317 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:02,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:02,988 INFO L93 Difference]: Finished difference Result 27826 states and 80486 transitions. [2022-03-15 13:58:02,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:58:02,989 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:58:02,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:03,045 INFO L225 Difference]: With dead ends: 27826 [2022-03-15 13:58:03,045 INFO L226 Difference]: Without dead ends: 27826 [2022-03-15 13:58:03,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=468, Invalid=1602, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 13:58:03,046 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1243 mSDsluCounter, 2995 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:03,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1243 Valid, 3264 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:58:03,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27826 states. [2022-03-15 13:58:03,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27826 to 19085. [2022-03-15 13:58:03,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19085 states, 19084 states have (on average 2.8938901697757284) internal successors, (55227), 19084 states have internal predecessors, (55227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:03,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19085 states to 19085 states and 55227 transitions. [2022-03-15 13:58:03,400 INFO L78 Accepts]: Start accepts. Automaton has 19085 states and 55227 transitions. Word has length 177 [2022-03-15 13:58:03,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:03,400 INFO L470 AbstractCegarLoop]: Abstraction has 19085 states and 55227 transitions. [2022-03-15 13:58:03,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:03,400 INFO L276 IsEmpty]: Start isEmpty. Operand 19085 states and 55227 transitions. [2022-03-15 13:58:03,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:58:03,426 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:03,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:03,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-03-15 13:58:03,426 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:58:03,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash 29862778, now seen corresponding path program 31 times [2022-03-15 13:58:03,427 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:03,427 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051678339] [2022-03-15 13:58:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:03,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:04,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:04,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:04,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051678339] [2022-03-15 13:58:04,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051678339] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:04,050 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:04,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:58:04,050 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033778003] [2022-03-15 13:58:04,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:04,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:58:04,050 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:04,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:58:04,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:58:04,051 INFO L87 Difference]: Start difference. First operand 19085 states and 55227 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:04,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:04,913 INFO L93 Difference]: Finished difference Result 28602 states and 82592 transitions. [2022-03-15 13:58:04,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 13:58:04,913 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:58:04,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:04,969 INFO L225 Difference]: With dead ends: 28602 [2022-03-15 13:58:04,969 INFO L226 Difference]: Without dead ends: 28602 [2022-03-15 13:58:04,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=433, Invalid=1637, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 13:58:04,970 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1103 mSDsluCounter, 3082 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 3348 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:04,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 3348 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:58:04,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28602 states. [2022-03-15 13:58:05,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28602 to 19085. [2022-03-15 13:58:05,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19085 states, 19084 states have (on average 2.8934709704464474) internal successors, (55219), 19084 states have internal predecessors, (55219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:05,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19085 states to 19085 states and 55219 transitions. [2022-03-15 13:58:05,339 INFO L78 Accepts]: Start accepts. Automaton has 19085 states and 55219 transitions. Word has length 177 [2022-03-15 13:58:05,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:05,339 INFO L470 AbstractCegarLoop]: Abstraction has 19085 states and 55219 transitions. [2022-03-15 13:58:05,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:05,339 INFO L276 IsEmpty]: Start isEmpty. Operand 19085 states and 55219 transitions. [2022-03-15 13:58:05,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:58:05,369 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:05,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:05,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-03-15 13:58:05,369 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:58:05,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:05,370 INFO L85 PathProgramCache]: Analyzing trace with hash -158017312, now seen corresponding path program 29 times [2022-03-15 13:58:05,370 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:05,370 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436452243] [2022-03-15 13:58:05,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:05,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:05,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:05,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:05,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436452243] [2022-03-15 13:58:05,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436452243] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:05,794 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:05,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:58:05,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086083745] [2022-03-15 13:58:05,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:05,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:58:05,795 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:05,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:58:05,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:58:05,795 INFO L87 Difference]: Start difference. First operand 19085 states and 55219 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:06,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:06,754 INFO L93 Difference]: Finished difference Result 27578 states and 79554 transitions. [2022-03-15 13:58:06,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 13:58:06,754 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:58:06,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:06,822 INFO L225 Difference]: With dead ends: 27578 [2022-03-15 13:58:06,822 INFO L226 Difference]: Without dead ends: 27578 [2022-03-15 13:58:06,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=428, Invalid=1552, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 13:58:06,823 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 1078 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:06,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1078 Valid, 3404 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:58:06,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27578 states. [2022-03-15 13:58:07,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27578 to 18741. [2022-03-15 13:58:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18741 states, 18740 states have (on average 2.8879935965848453) internal successors, (54121), 18740 states have internal predecessors, (54121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18741 states to 18741 states and 54121 transitions. [2022-03-15 13:58:07,259 INFO L78 Accepts]: Start accepts. Automaton has 18741 states and 54121 transitions. Word has length 177 [2022-03-15 13:58:07,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:07,260 INFO L470 AbstractCegarLoop]: Abstraction has 18741 states and 54121 transitions. [2022-03-15 13:58:07,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:07,260 INFO L276 IsEmpty]: Start isEmpty. Operand 18741 states and 54121 transitions. [2022-03-15 13:58:07,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:58:07,291 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:07,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:07,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-03-15 13:58:07,292 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:58:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:07,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1237723586, now seen corresponding path program 42 times [2022-03-15 13:58:07,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:07,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275589606] [2022-03-15 13:58:07,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:07,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:07,814 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:07,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275589606] [2022-03-15 13:58:07,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275589606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:07,815 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:07,815 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:58:07,815 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069643839] [2022-03-15 13:58:07,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:07,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:58:07,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:07,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:58:07,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:58:07,815 INFO L87 Difference]: Start difference. First operand 18741 states and 54121 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:08,834 INFO L93 Difference]: Finished difference Result 26978 states and 77866 transitions. [2022-03-15 13:58:08,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:58:08,835 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:58:08,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:08,896 INFO L225 Difference]: With dead ends: 26978 [2022-03-15 13:58:08,897 INFO L226 Difference]: Without dead ends: 26978 [2022-03-15 13:58:08,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=472, Invalid=1690, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 13:58:08,897 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1403 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:08,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1403 Valid, 3232 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:58:08,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26978 states. [2022-03-15 13:58:09,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26978 to 18741. [2022-03-15 13:58:09,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18741 states, 18740 states have (on average 2.8879935965848453) internal successors, (54121), 18740 states have internal predecessors, (54121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:09,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18741 states to 18741 states and 54121 transitions. [2022-03-15 13:58:09,288 INFO L78 Accepts]: Start accepts. Automaton has 18741 states and 54121 transitions. Word has length 177 [2022-03-15 13:58:09,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:09,288 INFO L470 AbstractCegarLoop]: Abstraction has 18741 states and 54121 transitions. [2022-03-15 13:58:09,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 18741 states and 54121 transitions. [2022-03-15 13:58:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:58:09,318 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:09,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:09,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-03-15 13:58:09,319 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:58:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:09,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1701298328, now seen corresponding path program 22 times [2022-03-15 13:58:09,319 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:09,319 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998196448] [2022-03-15 13:58:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:09,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:09,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:09,865 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:09,865 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998196448] [2022-03-15 13:58:09,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998196448] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:09,866 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:09,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:58:09,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058373937] [2022-03-15 13:58:09,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:09,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:58:09,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:09,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:58:09,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:58:09,866 INFO L87 Difference]: Start difference. First operand 18741 states and 54121 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:10,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:10,867 INFO L93 Difference]: Finished difference Result 27202 states and 78514 transitions. [2022-03-15 13:58:10,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:58:10,868 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:58:10,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:10,936 INFO L225 Difference]: With dead ends: 27202 [2022-03-15 13:58:10,936 INFO L226 Difference]: Without dead ends: 27202 [2022-03-15 13:58:10,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=466, Invalid=1604, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 13:58:10,937 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1226 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:10,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 3127 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:58:10,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27202 states. [2022-03-15 13:58:11,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27202 to 18733. [2022-03-15 13:58:11,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18733 states, 18732 states have (on average 2.887198377108691) internal successors, (54083), 18732 states have internal predecessors, (54083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:11,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18733 states to 18733 states and 54083 transitions. [2022-03-15 13:58:11,322 INFO L78 Accepts]: Start accepts. Automaton has 18733 states and 54083 transitions. Word has length 177 [2022-03-15 13:58:11,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:11,322 INFO L470 AbstractCegarLoop]: Abstraction has 18733 states and 54083 transitions. [2022-03-15 13:58:11,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:11,322 INFO L276 IsEmpty]: Start isEmpty. Operand 18733 states and 54083 transitions. [2022-03-15 13:58:11,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:58:11,349 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:11,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:11,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-03-15 13:58:11,349 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:58:11,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:11,350 INFO L85 PathProgramCache]: Analyzing trace with hash 981087844, now seen corresponding path program 43 times [2022-03-15 13:58:11,350 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:11,350 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747328424] [2022-03-15 13:58:11,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:11,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:11,865 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:11,866 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747328424] [2022-03-15 13:58:11,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747328424] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:11,866 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:11,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:58:11,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987385715] [2022-03-15 13:58:11,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:11,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:58:11,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:11,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:58:11,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:58:11,866 INFO L87 Difference]: Start difference. First operand 18733 states and 54083 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:13,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:13,097 INFO L93 Difference]: Finished difference Result 26890 states and 77576 transitions. [2022-03-15 13:58:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 13:58:13,098 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:58:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:13,156 INFO L225 Difference]: With dead ends: 26890 [2022-03-15 13:58:13,157 INFO L226 Difference]: Without dead ends: 26890 [2022-03-15 13:58:13,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=525, Invalid=1827, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 13:58:13,157 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1258 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:13,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1258 Valid, 2960 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:58:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26890 states. [2022-03-15 13:58:13,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26890 to 18717. [2022-03-15 13:58:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18717 states, 18716 states have (on average 2.8873156657405428) internal successors, (54039), 18716 states have internal predecessors, (54039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18717 states to 18717 states and 54039 transitions. [2022-03-15 13:58:13,544 INFO L78 Accepts]: Start accepts. Automaton has 18717 states and 54039 transitions. Word has length 177 [2022-03-15 13:58:13,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:13,544 INFO L470 AbstractCegarLoop]: Abstraction has 18717 states and 54039 transitions. [2022-03-15 13:58:13,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:13,544 INFO L276 IsEmpty]: Start isEmpty. Operand 18717 states and 54039 transitions. [2022-03-15 13:58:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:58:13,576 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:13,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:13,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-03-15 13:58:13,576 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:58:13,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:13,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1275970236, now seen corresponding path program 23 times [2022-03-15 13:58:13,576 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:13,576 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379564474] [2022-03-15 13:58:13,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:13,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:14,032 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:14,033 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379564474] [2022-03-15 13:58:14,033 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379564474] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:14,033 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:14,033 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:58:14,033 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412287592] [2022-03-15 13:58:14,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:14,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:58:14,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:14,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:58:14,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:58:14,033 INFO L87 Difference]: Start difference. First operand 18717 states and 54039 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:14,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:14,703 INFO L93 Difference]: Finished difference Result 26970 states and 77820 transitions. [2022-03-15 13:58:14,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 13:58:14,703 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:58:14,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:14,755 INFO L225 Difference]: With dead ends: 26970 [2022-03-15 13:58:14,756 INFO L226 Difference]: Without dead ends: 26970 [2022-03-15 13:58:14,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=518, Invalid=1738, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 13:58:14,756 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1208 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 2658 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:14,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1208 Valid, 2658 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:58:14,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26970 states. [2022-03-15 13:58:15,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26970 to 18733. [2022-03-15 13:58:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18733 states, 18732 states have (on average 2.887198377108691) internal successors, (54083), 18732 states have internal predecessors, (54083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18733 states to 18733 states and 54083 transitions. [2022-03-15 13:58:15,089 INFO L78 Accepts]: Start accepts. Automaton has 18733 states and 54083 transitions. Word has length 177 [2022-03-15 13:58:15,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:15,089 INFO L470 AbstractCegarLoop]: Abstraction has 18733 states and 54083 transitions. [2022-03-15 13:58:15,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:15,089 INFO L276 IsEmpty]: Start isEmpty. Operand 18733 states and 54083 transitions. [2022-03-15 13:58:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:58:15,117 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:15,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:15,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-03-15 13:58:15,117 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:58:15,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:15,117 INFO L85 PathProgramCache]: Analyzing trace with hash -818393186, now seen corresponding path program 24 times [2022-03-15 13:58:15,117 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:15,117 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327983382] [2022-03-15 13:58:15,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:15,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:15,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:15,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327983382] [2022-03-15 13:58:15,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327983382] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:15,408 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:15,408 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:58:15,408 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260161688] [2022-03-15 13:58:15,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:15,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:58:15,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:58:15,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:58:15,409 INFO L87 Difference]: Start difference. First operand 18733 states and 54083 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:16,319 INFO L93 Difference]: Finished difference Result 27586 states and 79586 transitions. [2022-03-15 13:58:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 13:58:16,319 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:58:16,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:16,378 INFO L225 Difference]: With dead ends: 27586 [2022-03-15 13:58:16,378 INFO L226 Difference]: Without dead ends: 27586 [2022-03-15 13:58:16,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 13:58:16,379 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1136 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:16,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1136 Valid, 3376 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:58:16,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27586 states. [2022-03-15 13:58:16,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27586 to 18459. [2022-03-15 13:58:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18459 states, 18458 states have (on average 2.887907682305775) internal successors, (53305), 18458 states have internal predecessors, (53305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18459 states to 18459 states and 53305 transitions. [2022-03-15 13:58:16,780 INFO L78 Accepts]: Start accepts. Automaton has 18459 states and 53305 transitions. Word has length 177 [2022-03-15 13:58:16,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:16,781 INFO L470 AbstractCegarLoop]: Abstraction has 18459 states and 53305 transitions. [2022-03-15 13:58:16,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:16,781 INFO L276 IsEmpty]: Start isEmpty. Operand 18459 states and 53305 transitions. [2022-03-15 13:58:16,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:58:16,809 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:16,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:16,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-03-15 13:58:16,809 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:58:16,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:16,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1065664872, now seen corresponding path program 44 times [2022-03-15 13:58:16,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:16,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633574927] [2022-03-15 13:58:16,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:16,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:17,306 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:17,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633574927] [2022-03-15 13:58:17,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633574927] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:58:17,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590279964] [2022-03-15 13:58:17,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 13:58:17,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:17,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:58:17,308 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:58:17,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-15 13:58:17,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 13:58:17,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:58:17,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-15 13:58:17,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:58:17,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:58:17,598 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:58:17,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:58:17,968 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 13:58:18,264 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:18,264 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2022-03-15 13:58:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:18,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:58:18,589 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3056 (Array Int Int)) (~get2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3056))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (< (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))) |c_thread1Thread1of1ForFork0_#t~mem2|) (<= (select (select .cse1 c_~get1~0.base) c_~get1~0.offset) (select .cse0 c_~get2~0.offset)))))) is different from false [2022-03-15 13:58:18,638 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-03-15 13:58:18,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 128 [2022-03-15 13:58:18,658 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:18,658 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 81 [2022-03-15 13:58:19,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:19,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590279964] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:58:19,870 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:58:19,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 42 [2022-03-15 13:58:19,871 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629630286] [2022-03-15 13:58:19,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:58:19,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 13:58:19,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 13:58:19,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1467, Unknown=1, NotChecked=78, Total=1722 [2022-03-15 13:58:19,871 INFO L87 Difference]: Start difference. First operand 18459 states and 53305 transitions. Second operand has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:22,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:22,182 INFO L93 Difference]: Finished difference Result 31428 states and 90352 transitions. [2022-03-15 13:58:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:58:22,182 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:58:22,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:22,255 INFO L225 Difference]: With dead ends: 31428 [2022-03-15 13:58:22,255 INFO L226 Difference]: Without dead ends: 31428 [2022-03-15 13:58:22,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1417 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1335, Invalid=5640, Unknown=1, NotChecked=164, Total=7140 [2022-03-15 13:58:22,256 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 2199 mSDsluCounter, 7305 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 7590 SdHoareTripleChecker+Invalid, 2873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 677 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:22,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2199 Valid, 7590 Invalid, 2873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2170 Invalid, 0 Unknown, 677 Unchecked, 0.9s Time] [2022-03-15 13:58:22,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31428 states. [2022-03-15 13:58:22,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31428 to 18409. [2022-03-15 13:58:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18409 states, 18408 states have (on average 2.8883637548891787) internal successors, (53169), 18408 states have internal predecessors, (53169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:22,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18409 states to 18409 states and 53169 transitions. [2022-03-15 13:58:22,770 INFO L78 Accepts]: Start accepts. Automaton has 18409 states and 53169 transitions. Word has length 177 [2022-03-15 13:58:22,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:22,771 INFO L470 AbstractCegarLoop]: Abstraction has 18409 states and 53169 transitions. [2022-03-15 13:58:22,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.976190476190476) internal successors, (335), 42 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:22,771 INFO L276 IsEmpty]: Start isEmpty. Operand 18409 states and 53169 transitions. [2022-03-15 13:58:22,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:58:22,798 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:22,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:22,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-15 13:58:23,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2022-03-15 13:58:23,016 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:58:23,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:23,018 INFO L85 PathProgramCache]: Analyzing trace with hash 99296670, now seen corresponding path program 32 times [2022-03-15 13:58:23,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:23,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136766915] [2022-03-15 13:58:23,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:23,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:23,466 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:23,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136766915] [2022-03-15 13:58:23,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136766915] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:23,466 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:23,466 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:58:23,466 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545803846] [2022-03-15 13:58:23,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:23,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:58:23,466 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:23,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:58:23,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:58:23,467 INFO L87 Difference]: Start difference. First operand 18409 states and 53169 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:24,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:24,591 INFO L93 Difference]: Finished difference Result 28669 states and 82379 transitions. [2022-03-15 13:58:24,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 13:58:24,592 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:58:24,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:24,654 INFO L225 Difference]: With dead ends: 28669 [2022-03-15 13:58:24,654 INFO L226 Difference]: Without dead ends: 28669 [2022-03-15 13:58:24,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=440, Invalid=1722, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 13:58:24,655 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 1391 mSDsluCounter, 4868 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 5173 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:24,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 5173 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 13:58:24,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28669 states. [2022-03-15 13:58:24,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28669 to 18471. [2022-03-15 13:58:25,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18471 states, 18470 states have (on average 2.8829994585814833) internal successors, (53249), 18470 states have internal predecessors, (53249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18471 states to 18471 states and 53249 transitions. [2022-03-15 13:58:25,046 INFO L78 Accepts]: Start accepts. Automaton has 18471 states and 53249 transitions. Word has length 177 [2022-03-15 13:58:25,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:25,046 INFO L470 AbstractCegarLoop]: Abstraction has 18471 states and 53249 transitions. [2022-03-15 13:58:25,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:25,046 INFO L276 IsEmpty]: Start isEmpty. Operand 18471 states and 53249 transitions. [2022-03-15 13:58:25,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:58:25,073 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:25,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:25,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-03-15 13:58:25,073 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:58:25,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:25,074 INFO L85 PathProgramCache]: Analyzing trace with hash 719692692, now seen corresponding path program 45 times [2022-03-15 13:58:25,074 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:25,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973403394] [2022-03-15 13:58:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:25,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:25,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:25,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973403394] [2022-03-15 13:58:25,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973403394] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:25,375 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:25,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:58:25,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598648893] [2022-03-15 13:58:25,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:25,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:58:25,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:25,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:58:25,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:58:25,376 INFO L87 Difference]: Start difference. First operand 18471 states and 53249 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:26,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:26,147 INFO L93 Difference]: Finished difference Result 25764 states and 74264 transitions. [2022-03-15 13:58:26,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 13:58:26,147 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:58:26,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:26,198 INFO L225 Difference]: With dead ends: 25764 [2022-03-15 13:58:26,198 INFO L226 Difference]: Without dead ends: 25764 [2022-03-15 13:58:26,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=1574, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 13:58:26,198 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 1140 mSDsluCounter, 4203 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 4487 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:26,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 4487 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:58:26,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25764 states. [2022-03-15 13:58:26,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25764 to 18711. [2022-03-15 13:58:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18711 states, 18710 states have (on average 2.8793693212186) internal successors, (53873), 18710 states have internal predecessors, (53873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:26,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18711 states to 18711 states and 53873 transitions. [2022-03-15 13:58:26,553 INFO L78 Accepts]: Start accepts. Automaton has 18711 states and 53873 transitions. Word has length 177 [2022-03-15 13:58:26,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:26,554 INFO L470 AbstractCegarLoop]: Abstraction has 18711 states and 53873 transitions. [2022-03-15 13:58:26,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:26,554 INFO L276 IsEmpty]: Start isEmpty. Operand 18711 states and 53873 transitions. [2022-03-15 13:58:26,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:58:26,582 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:26,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:26,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-03-15 13:58:26,582 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:58:26,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:26,582 INFO L85 PathProgramCache]: Analyzing trace with hash -810387584, now seen corresponding path program 46 times [2022-03-15 13:58:26,583 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:26,583 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856748282] [2022-03-15 13:58:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:26,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:26,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:26,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:26,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856748282] [2022-03-15 13:58:26,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856748282] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:58:26,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380417087] [2022-03-15 13:58:26,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 13:58:26,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:26,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:58:26,936 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:58:26,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-15 13:58:27,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 13:58:27,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:58:27,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-15 13:58:27,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:58:27,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:58:27,897 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:58:28,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 13:58:28,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 13:58:28,092 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:58:28,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-03-15 13:58:28,515 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-15 13:58:28,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-15 13:58:28,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:58:28,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:58:29,545 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:29,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 53 [2022-03-15 13:58:29,563 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-15 13:58:29,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1207 treesize of output 1063 [2022-03-15 13:58:29,573 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:29,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1063 treesize of output 999 [2022-03-15 13:58:29,586 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:29,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 950 treesize of output 830 [2022-03-15 13:58:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:58:43,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380417087] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:58:43,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:58:43,537 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 25] total 71 [2022-03-15 13:58:43,537 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240979313] [2022-03-15 13:58:43,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:58:43,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-03-15 13:58:43,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:43,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-03-15 13:58:43,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=4578, Unknown=98, NotChecked=0, Total=4970 [2022-03-15 13:58:43,538 INFO L87 Difference]: Start difference. First operand 18711 states and 53873 transitions. Second operand has 71 states, 71 states have (on average 6.056338028169014) internal successors, (430), 71 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:49,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:49,285 INFO L93 Difference]: Finished difference Result 35008 states and 100868 transitions. [2022-03-15 13:58:49,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-15 13:58:49,285 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 6.056338028169014) internal successors, (430), 71 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:58:49,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:49,357 INFO L225 Difference]: With dead ends: 35008 [2022-03-15 13:58:49,357 INFO L226 Difference]: Without dead ends: 35008 [2022-03-15 13:58:49,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 308 SyntacticMatches, 16 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3157 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2406, Invalid=12258, Unknown=98, NotChecked=0, Total=14762 [2022-03-15 13:58:49,358 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 5193 mSDsluCounter, 15462 mSDsCounter, 0 mSdLazyCounter, 4273 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5193 SdHoareTripleChecker+Valid, 15645 SdHoareTripleChecker+Invalid, 5010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 700 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:49,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5193 Valid, 15645 Invalid, 5010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4273 Invalid, 0 Unknown, 700 Unchecked, 1.3s Time] [2022-03-15 13:58:49,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35008 states. [2022-03-15 13:58:49,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35008 to 19551. [2022-03-15 13:58:49,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19551 states, 19550 states have (on average 2.8847570332480816) internal successors, (56397), 19550 states have internal predecessors, (56397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:49,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19551 states to 19551 states and 56397 transitions. [2022-03-15 13:58:49,799 INFO L78 Accepts]: Start accepts. Automaton has 19551 states and 56397 transitions. Word has length 177 [2022-03-15 13:58:49,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:49,799 INFO L470 AbstractCegarLoop]: Abstraction has 19551 states and 56397 transitions. [2022-03-15 13:58:49,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 6.056338028169014) internal successors, (430), 71 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:49,799 INFO L276 IsEmpty]: Start isEmpty. Operand 19551 states and 56397 transitions. [2022-03-15 13:58:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:58:49,826 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:49,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:49,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-15 13:58:50,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:50,029 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:58:50,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:50,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1991958410, now seen corresponding path program 30 times [2022-03-15 13:58:50,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:50,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027538338] [2022-03-15 13:58:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:50,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:50,407 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:50,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027538338] [2022-03-15 13:58:50,407 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027538338] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:58:50,407 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584602666] [2022-03-15 13:58:50,407 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 13:58:50,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:50,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:58:50,408 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:58:50,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-15 13:58:50,601 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 13:58:50,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:58:50,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-15 13:58:50,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:58:50,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:58:50,759 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:58:50,759 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:58:51,060 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:58:51,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:58:51,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 13:58:51,312 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:58:51,312 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-03-15 13:58:51,449 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-15 13:58:51,449 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:58:51,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:58:51,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:58:52,027 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:52,027 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 54 [2022-03-15 13:58:52,033 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-15 13:58:52,033 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1212 treesize of output 1068 [2022-03-15 13:58:52,049 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:52,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1068 treesize of output 1004 [2022-03-15 13:58:52,061 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:58:52,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 950 treesize of output 830 [2022-03-15 13:58:53,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:58:53,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584602666] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:58:53,928 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:58:53,928 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 23] total 65 [2022-03-15 13:58:53,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438226442] [2022-03-15 13:58:53,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:58:53,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-03-15 13:58:53,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:53,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-03-15 13:58:53,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=3852, Unknown=68, NotChecked=0, Total=4160 [2022-03-15 13:58:53,929 INFO L87 Difference]: Start difference. First operand 19551 states and 56397 transitions. Second operand has 65 states, 65 states have (on average 6.338461538461538) internal successors, (412), 65 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:58,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:58:58,338 INFO L93 Difference]: Finished difference Result 27703 states and 79763 transitions. [2022-03-15 13:58:58,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 13:58:58,338 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 6.338461538461538) internal successors, (412), 65 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:58:58,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:58:58,395 INFO L225 Difference]: With dead ends: 27703 [2022-03-15 13:58:58,395 INFO L226 Difference]: Without dead ends: 27703 [2022-03-15 13:58:58,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 314 SyntacticMatches, 9 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1741, Invalid=8903, Unknown=68, NotChecked=0, Total=10712 [2022-03-15 13:58:58,396 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 3607 mSDsluCounter, 10705 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3607 SdHoareTripleChecker+Valid, 10885 SdHoareTripleChecker+Invalid, 3338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 522 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 13:58:58,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3607 Valid, 10885 Invalid, 3338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2785 Invalid, 0 Unknown, 522 Unchecked, 1.1s Time] [2022-03-15 13:58:58,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27703 states. [2022-03-15 13:58:58,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27703 to 17751. [2022-03-15 13:58:58,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17751 states, 17750 states have (on average 2.887042253521127) internal successors, (51245), 17750 states have internal predecessors, (51245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:58,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17751 states to 17751 states and 51245 transitions. [2022-03-15 13:58:58,746 INFO L78 Accepts]: Start accepts. Automaton has 17751 states and 51245 transitions. Word has length 177 [2022-03-15 13:58:58,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:58:58,746 INFO L470 AbstractCegarLoop]: Abstraction has 17751 states and 51245 transitions. [2022-03-15 13:58:58,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 6.338461538461538) internal successors, (412), 65 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:58:58,746 INFO L276 IsEmpty]: Start isEmpty. Operand 17751 states and 51245 transitions. [2022-03-15 13:58:58,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:58:58,772 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:58:58,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:58:58,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-03-15 13:58:58,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:58:58,980 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:58:58,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:58:58,981 INFO L85 PathProgramCache]: Analyzing trace with hash -488322240, now seen corresponding path program 33 times [2022-03-15 13:58:58,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:58:58,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213536899] [2022-03-15 13:58:58,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:58:58,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:58:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:58:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:58:59,490 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:58:59,490 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213536899] [2022-03-15 13:58:59,490 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213536899] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:58:59,490 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:58:59,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-15 13:58:59,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113052922] [2022-03-15 13:58:59,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:58:59,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 13:58:59,490 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:58:59,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 13:58:59,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-03-15 13:58:59,491 INFO L87 Difference]: Start difference. First operand 17751 states and 51245 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:00,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:00,918 INFO L93 Difference]: Finished difference Result 29943 states and 86289 transitions. [2022-03-15 13:59:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 13:59:00,919 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:00,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:00,975 INFO L225 Difference]: With dead ends: 29943 [2022-03-15 13:59:00,975 INFO L226 Difference]: Without dead ends: 29943 [2022-03-15 13:59:00,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=550, Invalid=2102, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 13:59:00,975 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 1615 mSDsluCounter, 4302 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 4609 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:00,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1615 Valid, 4609 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 13:59:01,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29943 states. [2022-03-15 13:59:01,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29943 to 17703. [2022-03-15 13:59:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17703 states, 17702 states have (on average 2.8874138515421985) internal successors, (51113), 17702 states have internal predecessors, (51113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17703 states to 17703 states and 51113 transitions. [2022-03-15 13:59:01,330 INFO L78 Accepts]: Start accepts. Automaton has 17703 states and 51113 transitions. Word has length 177 [2022-03-15 13:59:01,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:01,330 INFO L470 AbstractCegarLoop]: Abstraction has 17703 states and 51113 transitions. [2022-03-15 13:59:01,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:01,330 INFO L276 IsEmpty]: Start isEmpty. Operand 17703 states and 51113 transitions. [2022-03-15 13:59:01,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:01,355 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:01,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:01,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-03-15 13:59:01,355 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:01,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:01,355 INFO L85 PathProgramCache]: Analyzing trace with hash -650611166, now seen corresponding path program 34 times [2022-03-15 13:59:01,355 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:01,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619165326] [2022-03-15 13:59:01,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:01,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:01,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:01,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619165326] [2022-03-15 13:59:01,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619165326] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:01,787 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:01,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-15 13:59:01,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749980028] [2022-03-15 13:59:01,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:01,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 13:59:01,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:01,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 13:59:01,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-03-15 13:59:01,787 INFO L87 Difference]: Start difference. First operand 17703 states and 51113 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:03,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:03,059 INFO L93 Difference]: Finished difference Result 26282 states and 76020 transitions. [2022-03-15 13:59:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 13:59:03,059 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:03,111 INFO L225 Difference]: With dead ends: 26282 [2022-03-15 13:59:03,111 INFO L226 Difference]: Without dead ends: 26282 [2022-03-15 13:59:03,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=466, Invalid=1886, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 13:59:03,112 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1450 mSDsluCounter, 3716 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 3991 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:03,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 3991 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 13:59:03,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26282 states. [2022-03-15 13:59:03,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26282 to 17679. [2022-03-15 13:59:03,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17679 states, 17678 states have (on average 2.887600407285892) internal successors, (51047), 17678 states have internal predecessors, (51047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17679 states to 17679 states and 51047 transitions. [2022-03-15 13:59:03,442 INFO L78 Accepts]: Start accepts. Automaton has 17679 states and 51047 transitions. Word has length 177 [2022-03-15 13:59:03,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:03,442 INFO L470 AbstractCegarLoop]: Abstraction has 17679 states and 51047 transitions. [2022-03-15 13:59:03,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:03,442 INFO L276 IsEmpty]: Start isEmpty. Operand 17679 states and 51047 transitions. [2022-03-15 13:59:03,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:03,468 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:03,468 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:03,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-03-15 13:59:03,468 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:03,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:03,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1948013948, now seen corresponding path program 35 times [2022-03-15 13:59:03,468 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:03,482 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404168878] [2022-03-15 13:59:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:03,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:03,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:03,974 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:03,974 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404168878] [2022-03-15 13:59:03,974 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404168878] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:03,974 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:03,974 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-15 13:59:03,974 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385099926] [2022-03-15 13:59:03,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:03,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 13:59:03,974 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:03,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 13:59:03,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-03-15 13:59:03,975 INFO L87 Difference]: Start difference. First operand 17679 states and 51047 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:04,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:04,953 INFO L93 Difference]: Finished difference Result 25548 states and 73826 transitions. [2022-03-15 13:59:04,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:59:04,953 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:04,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:05,007 INFO L225 Difference]: With dead ends: 25548 [2022-03-15 13:59:05,007 INFO L226 Difference]: Without dead ends: 25548 [2022-03-15 13:59:05,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=343, Invalid=1463, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 13:59:05,008 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1284 mSDsluCounter, 3794 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:05,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1284 Valid, 4068 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:59:05,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25548 states. [2022-03-15 13:59:05,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25548 to 17655. [2022-03-15 13:59:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17655 states, 17654 states have (on average 2.8859748498923756) internal successors, (50949), 17654 states have internal predecessors, (50949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:05,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17655 states to 17655 states and 50949 transitions. [2022-03-15 13:59:05,327 INFO L78 Accepts]: Start accepts. Automaton has 17655 states and 50949 transitions. Word has length 177 [2022-03-15 13:59:05,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:05,327 INFO L470 AbstractCegarLoop]: Abstraction has 17655 states and 50949 transitions. [2022-03-15 13:59:05,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 17655 states and 50949 transitions. [2022-03-15 13:59:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:05,352 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:05,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:05,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-03-15 13:59:05,352 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:05,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:05,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1760133858, now seen corresponding path program 31 times [2022-03-15 13:59:05,353 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:05,353 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88354177] [2022-03-15 13:59:05,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:05,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:05,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:05,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88354177] [2022-03-15 13:59:05,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88354177] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:05,945 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:05,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:59:05,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454501002] [2022-03-15 13:59:05,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:05,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:59:05,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:05,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:59:05,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:59:05,947 INFO L87 Difference]: Start difference. First operand 17655 states and 50949 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:06,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:06,971 INFO L93 Difference]: Finished difference Result 24444 states and 70534 transitions. [2022-03-15 13:59:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:59:06,971 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:07,021 INFO L225 Difference]: With dead ends: 24444 [2022-03-15 13:59:07,021 INFO L226 Difference]: Without dead ends: 24444 [2022-03-15 13:59:07,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=383, Invalid=1597, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 13:59:07,022 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1218 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 4296 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:07,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1218 Valid, 4296 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 13:59:07,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24444 states. [2022-03-15 13:59:07,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24444 to 16947. [2022-03-15 13:59:07,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16947 states, 16946 states have (on average 2.878850466186711) internal successors, (48785), 16946 states have internal predecessors, (48785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:07,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16947 states to 16947 states and 48785 transitions. [2022-03-15 13:59:07,337 INFO L78 Accepts]: Start accepts. Automaton has 16947 states and 48785 transitions. Word has length 177 [2022-03-15 13:59:07,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:07,337 INFO L470 AbstractCegarLoop]: Abstraction has 16947 states and 48785 transitions. [2022-03-15 13:59:07,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:07,337 INFO L276 IsEmpty]: Start isEmpty. Operand 16947 states and 48785 transitions. [2022-03-15 13:59:07,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:07,361 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:07,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:07,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-03-15 13:59:07,361 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:07,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:07,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1139092540, now seen corresponding path program 47 times [2022-03-15 13:59:07,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:07,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570309300] [2022-03-15 13:59:07,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:07,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:07,764 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:07,764 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570309300] [2022-03-15 13:59:07,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570309300] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:07,764 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:07,765 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-03-15 13:59:07,765 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791667590] [2022-03-15 13:59:07,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:07,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 13:59:07,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 13:59:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-03-15 13:59:07,765 INFO L87 Difference]: Start difference. First operand 16947 states and 48785 transitions. Second operand has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:08,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:08,810 INFO L93 Difference]: Finished difference Result 23642 states and 68134 transitions. [2022-03-15 13:59:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 13:59:08,810 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:08,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:08,860 INFO L225 Difference]: With dead ends: 23642 [2022-03-15 13:59:08,860 INFO L226 Difference]: Without dead ends: 23642 [2022-03-15 13:59:08,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=387, Invalid=1505, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 13:59:08,861 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1469 mSDsluCounter, 3348 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:08,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1469 Valid, 3622 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:59:08,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23642 states. [2022-03-15 13:59:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23642 to 16923. [2022-03-15 13:59:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16923 states, 16922 states have (on average 2.878087696489777) internal successors, (48703), 16922 states have internal predecessors, (48703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:09,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16923 states to 16923 states and 48703 transitions. [2022-03-15 13:59:09,193 INFO L78 Accepts]: Start accepts. Automaton has 16923 states and 48703 transitions. Word has length 177 [2022-03-15 13:59:09,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:09,193 INFO L470 AbstractCegarLoop]: Abstraction has 16923 states and 48703 transitions. [2022-03-15 13:59:09,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.695652173913044) internal successors, (177), 23 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:09,194 INFO L276 IsEmpty]: Start isEmpty. Operand 16923 states and 48703 transitions. [2022-03-15 13:59:09,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:09,222 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:09,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:09,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-03-15 13:59:09,222 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:09,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:09,222 INFO L85 PathProgramCache]: Analyzing trace with hash -675517798, now seen corresponding path program 25 times [2022-03-15 13:59:09,222 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:09,222 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817552240] [2022-03-15 13:59:09,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:09,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:09,673 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:09,673 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817552240] [2022-03-15 13:59:09,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817552240] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:09,673 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:09,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:59:09,674 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589238845] [2022-03-15 13:59:09,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:09,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:59:09,674 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:09,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:59:09,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:59:09,674 INFO L87 Difference]: Start difference. First operand 16923 states and 48703 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:10,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:10,764 INFO L93 Difference]: Finished difference Result 22490 states and 64614 transitions. [2022-03-15 13:59:10,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 13:59:10,765 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:10,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:10,806 INFO L225 Difference]: With dead ends: 22490 [2022-03-15 13:59:10,806 INFO L226 Difference]: Without dead ends: 22490 [2022-03-15 13:59:10,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=380, Invalid=1426, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 13:59:10,806 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1074 mSDsluCounter, 3639 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 3931 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:10,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1074 Valid, 3931 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 13:59:10,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22490 states. [2022-03-15 13:59:11,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22490 to 15571. [2022-03-15 13:59:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15571 states, 15570 states have (on average 2.864033397559409) internal successors, (44593), 15570 states have internal predecessors, (44593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:11,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15571 states to 15571 states and 44593 transitions. [2022-03-15 13:59:11,106 INFO L78 Accepts]: Start accepts. Automaton has 15571 states and 44593 transitions. Word has length 177 [2022-03-15 13:59:11,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:11,106 INFO L470 AbstractCegarLoop]: Abstraction has 15571 states and 44593 transitions. [2022-03-15 13:59:11,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:11,107 INFO L276 IsEmpty]: Start isEmpty. Operand 15571 states and 44593 transitions. [2022-03-15 13:59:11,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:11,129 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:11,129 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:11,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-03-15 13:59:11,130 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:11,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:11,130 INFO L85 PathProgramCache]: Analyzing trace with hash 120243174, now seen corresponding path program 32 times [2022-03-15 13:59:11,130 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:11,130 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270966247] [2022-03-15 13:59:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:11,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:11,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:11,604 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:11,604 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270966247] [2022-03-15 13:59:11,604 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270966247] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:11,604 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:11,604 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-03-15 13:59:11,604 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930906552] [2022-03-15 13:59:11,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:11,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 13:59:11,604 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:11,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 13:59:11,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-03-15 13:59:11,605 INFO L87 Difference]: Start difference. First operand 15571 states and 44593 transitions. Second operand has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:12,849 INFO L93 Difference]: Finished difference Result 23056 states and 66132 transitions. [2022-03-15 13:59:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 13:59:12,849 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:12,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:12,891 INFO L225 Difference]: With dead ends: 23056 [2022-03-15 13:59:12,891 INFO L226 Difference]: Without dead ends: 23056 [2022-03-15 13:59:12,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=482, Invalid=1774, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 13:59:12,892 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 1266 mSDsluCounter, 3765 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 4051 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:12,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1266 Valid, 4051 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 13:59:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23056 states. [2022-03-15 13:59:13,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23056 to 15563. [2022-03-15 13:59:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15563 states, 15562 states have (on average 2.8630638735381058) internal successors, (44555), 15562 states have internal predecessors, (44555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:13,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15563 states to 15563 states and 44555 transitions. [2022-03-15 13:59:13,182 INFO L78 Accepts]: Start accepts. Automaton has 15563 states and 44555 transitions. Word has length 177 [2022-03-15 13:59:13,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:13,182 INFO L470 AbstractCegarLoop]: Abstraction has 15563 states and 44555 transitions. [2022-03-15 13:59:13,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.045454545454545) internal successors, (177), 22 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:13,183 INFO L276 IsEmpty]: Start isEmpty. Operand 15563 states and 44555 transitions. [2022-03-15 13:59:13,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:13,205 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:13,205 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:13,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-03-15 13:59:13,206 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:13,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:13,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1809884142, now seen corresponding path program 33 times [2022-03-15 13:59:13,206 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:13,206 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623372112] [2022-03-15 13:59:13,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:13,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:13,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:13,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623372112] [2022-03-15 13:59:13,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623372112] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:13,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897308998] [2022-03-15 13:59:13,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 13:59:13,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:13,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:59:13,743 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:59:13,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-15 13:59:13,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 13:59:13,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:59:13,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-15 13:59:13,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:59:13,988 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:14,176 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:59:14,177 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 13:59:14,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:59:14,868 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:15,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 13:59:15,055 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:59:15,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 26 [2022-03-15 13:59:15,306 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-15 13:59:15,306 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:59:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:59:15,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:59:16,167 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:59:16,168 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 54 [2022-03-15 13:59:16,172 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-03-15 13:59:16,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 636 treesize of output 556 [2022-03-15 13:59:16,180 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:59:16,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 502 treesize of output 446 [2022-03-15 13:59:16,188 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 13:59:16,189 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 492 treesize of output 460 [2022-03-15 13:59:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:59:17,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897308998] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:59:17,063 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:59:17,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 23] total 64 [2022-03-15 13:59:17,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619403834] [2022-03-15 13:59:17,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:59:17,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-03-15 13:59:17,064 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:17,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-03-15 13:59:17,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=3714, Unknown=85, NotChecked=0, Total=4032 [2022-03-15 13:59:17,064 INFO L87 Difference]: Start difference. First operand 15563 states and 44555 transitions. Second operand has 64 states, 64 states have (on average 6.4375) internal successors, (412), 64 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:23,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:23,635 INFO L93 Difference]: Finished difference Result 43037 states and 123598 transitions. [2022-03-15 13:59:23,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-15 13:59:23,636 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.4375) internal successors, (412), 64 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:23,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:23,726 INFO L225 Difference]: With dead ends: 43037 [2022-03-15 13:59:23,726 INFO L226 Difference]: Without dead ends: 43037 [2022-03-15 13:59:23,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 315 SyntacticMatches, 16 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3960 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=3216, Invalid=13211, Unknown=85, NotChecked=0, Total=16512 [2022-03-15 13:59:23,728 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 4138 mSDsluCounter, 11260 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4138 SdHoareTripleChecker+Valid, 11401 SdHoareTripleChecker+Invalid, 3788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 980 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:23,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4138 Valid, 11401 Invalid, 3788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2778 Invalid, 0 Unknown, 980 Unchecked, 1.0s Time] [2022-03-15 13:59:23,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43037 states. [2022-03-15 13:59:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43037 to 11995. [2022-03-15 13:59:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11995 states, 11994 states have (on average 2.8294980823745206) internal successors, (33937), 11994 states have internal predecessors, (33937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11995 states to 11995 states and 33937 transitions. [2022-03-15 13:59:24,156 INFO L78 Accepts]: Start accepts. Automaton has 11995 states and 33937 transitions. Word has length 177 [2022-03-15 13:59:24,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:24,156 INFO L470 AbstractCegarLoop]: Abstraction has 11995 states and 33937 transitions. [2022-03-15 13:59:24,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.4375) internal successors, (412), 64 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 11995 states and 33937 transitions. [2022-03-15 13:59:24,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:24,172 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:24,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:24,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-15 13:59:24,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:24,386 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:24,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:24,386 INFO L85 PathProgramCache]: Analyzing trace with hash -2081850938, now seen corresponding path program 48 times [2022-03-15 13:59:24,386 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:24,386 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621180712] [2022-03-15 13:59:24,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:24,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:24,574 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:24,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621180712] [2022-03-15 13:59:24,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621180712] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:24,574 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:24,574 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:59:24,575 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422586038] [2022-03-15 13:59:24,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:24,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:59:24,575 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:24,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:59:24,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:59:24,575 INFO L87 Difference]: Start difference. First operand 11995 states and 33937 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:25,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:25,151 INFO L93 Difference]: Finished difference Result 27755 states and 79505 transitions. [2022-03-15 13:59:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:59:25,151 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:25,201 INFO L225 Difference]: With dead ends: 27755 [2022-03-15 13:59:25,201 INFO L226 Difference]: Without dead ends: 27755 [2022-03-15 13:59:25,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=426, Invalid=1296, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:59:25,202 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 1109 mSDsluCounter, 3843 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 4176 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:25,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 4176 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:59:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27755 states. [2022-03-15 13:59:25,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27755 to 12075. [2022-03-15 13:59:25,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12075 states, 12074 states have (on average 2.830296504886533) internal successors, (34173), 12074 states have internal predecessors, (34173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12075 states to 12075 states and 34173 transitions. [2022-03-15 13:59:25,468 INFO L78 Accepts]: Start accepts. Automaton has 12075 states and 34173 transitions. Word has length 177 [2022-03-15 13:59:25,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:25,468 INFO L470 AbstractCegarLoop]: Abstraction has 12075 states and 34173 transitions. [2022-03-15 13:59:25,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand 12075 states and 34173 transitions. [2022-03-15 13:59:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:25,484 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:25,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:25,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-03-15 13:59:25,484 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:25,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:25,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1172680446, now seen corresponding path program 36 times [2022-03-15 13:59:25,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:25,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928537382] [2022-03-15 13:59:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:25,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:25,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:25,824 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:25,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928537382] [2022-03-15 13:59:25,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928537382] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:25,824 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676592741] [2022-03-15 13:59:25,824 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 13:59:25,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:25,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:59:25,825 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:59:25,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-15 13:59:26,025 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 13:59:26,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:59:26,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-15 13:59:26,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:59:26,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:26,080 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-03-15 13:59:26,080 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-03-15 13:59:26,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 13:59:26,322 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-03-15 13:59:26,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:59:26,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 13:59:26,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 13:59:26,888 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:59:26,888 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-03-15 13:59:27,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:59:27,234 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:27,395 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:27,739 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:59:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 13:59:27,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:59:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:28,219 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676592741] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:59:28,219 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:59:28,219 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-03-15 13:59:28,220 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917113309] [2022-03-15 13:59:28,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:59:28,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-15 13:59:28,220 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:28,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-15 13:59:28,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2169, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 13:59:28,220 INFO L87 Difference]: Start difference. First operand 12075 states and 34173 transitions. Second operand has 49 states, 49 states have (on average 8.020408163265307) internal successors, (393), 49 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:34,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:34,327 INFO L93 Difference]: Finished difference Result 40365 states and 116162 transitions. [2022-03-15 13:59:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-15 13:59:34,328 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 8.020408163265307) internal successors, (393), 49 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:34,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:34,405 INFO L225 Difference]: With dead ends: 40365 [2022-03-15 13:59:34,405 INFO L226 Difference]: Without dead ends: 40365 [2022-03-15 13:59:34,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1978, Invalid=8324, Unknown=0, NotChecked=0, Total=10302 [2022-03-15 13:59:34,406 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 4189 mSDsluCounter, 11071 mSDsCounter, 0 mSdLazyCounter, 3073 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4189 SdHoareTripleChecker+Valid, 11436 SdHoareTripleChecker+Invalid, 3421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 296 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:34,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4189 Valid, 11436 Invalid, 3421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 3073 Invalid, 0 Unknown, 296 Unchecked, 1.3s Time] [2022-03-15 13:59:34,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40365 states. [2022-03-15 13:59:34,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40365 to 13747. [2022-03-15 13:59:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13747 states, 13746 states have (on average 2.853702895387749) internal successors, (39227), 13746 states have internal predecessors, (39227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13747 states to 13747 states and 39227 transitions. [2022-03-15 13:59:34,799 INFO L78 Accepts]: Start accepts. Automaton has 13747 states and 39227 transitions. Word has length 177 [2022-03-15 13:59:34,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:34,799 INFO L470 AbstractCegarLoop]: Abstraction has 13747 states and 39227 transitions. [2022-03-15 13:59:34,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 8.020408163265307) internal successors, (393), 49 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 13747 states and 39227 transitions. [2022-03-15 13:59:34,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:34,818 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:34,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:34,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-15 13:59:35,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:35,035 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:35,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:35,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1485350192, now seen corresponding path program 37 times [2022-03-15 13:59:35,035 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:35,035 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252191063] [2022-03-15 13:59:35,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:35,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:35,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:35,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252191063] [2022-03-15 13:59:35,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252191063] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:35,261 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:35,261 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:59:35,261 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754437218] [2022-03-15 13:59:35,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:35,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:59:35,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:35,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:59:35,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:59:35,262 INFO L87 Difference]: Start difference. First operand 13747 states and 39227 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:35,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:35,748 INFO L93 Difference]: Finished difference Result 26588 states and 76366 transitions. [2022-03-15 13:59:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:59:35,748 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:35,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:35,801 INFO L225 Difference]: With dead ends: 26588 [2022-03-15 13:59:35,801 INFO L226 Difference]: Without dead ends: 26588 [2022-03-15 13:59:35,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:59:35,802 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1222 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:35,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 3695 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:59:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26588 states. [2022-03-15 13:59:36,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26588 to 13779. [2022-03-15 13:59:36,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13779 states, 13778 states have (on average 2.855203948323414) internal successors, (39339), 13778 states have internal predecessors, (39339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:36,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13779 states to 13779 states and 39339 transitions. [2022-03-15 13:59:36,088 INFO L78 Accepts]: Start accepts. Automaton has 13779 states and 39339 transitions. Word has length 177 [2022-03-15 13:59:36,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:36,089 INFO L470 AbstractCegarLoop]: Abstraction has 13779 states and 39339 transitions. [2022-03-15 13:59:36,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:36,089 INFO L276 IsEmpty]: Start isEmpty. Operand 13779 states and 39339 transitions. [2022-03-15 13:59:36,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:36,108 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:36,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:36,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-03-15 13:59:36,108 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:36,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:36,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1756783830, now seen corresponding path program 49 times [2022-03-15 13:59:36,108 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:36,108 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454618733] [2022-03-15 13:59:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:36,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:36,332 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:36,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454618733] [2022-03-15 13:59:36,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454618733] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:36,333 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:36,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:59:36,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208320828] [2022-03-15 13:59:36,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:36,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:59:36,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:36,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:59:36,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:59:36,333 INFO L87 Difference]: Start difference. First operand 13779 states and 39339 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:36,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:36,814 INFO L93 Difference]: Finished difference Result 26686 states and 76646 transitions. [2022-03-15 13:59:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:59:36,814 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:36,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:36,864 INFO L225 Difference]: With dead ends: 26686 [2022-03-15 13:59:36,864 INFO L226 Difference]: Without dead ends: 26686 [2022-03-15 13:59:36,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=330, Invalid=1002, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:59:36,865 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 1087 mSDsluCounter, 3073 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:36,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 3365 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:59:36,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26686 states. [2022-03-15 13:59:37,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26686 to 13795. [2022-03-15 13:59:37,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13795 states, 13794 states have (on average 2.855081919675221) internal successors, (39383), 13794 states have internal predecessors, (39383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:37,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13795 states to 13795 states and 39383 transitions. [2022-03-15 13:59:37,148 INFO L78 Accepts]: Start accepts. Automaton has 13795 states and 39383 transitions. Word has length 177 [2022-03-15 13:59:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:37,148 INFO L470 AbstractCegarLoop]: Abstraction has 13795 states and 39383 transitions. [2022-03-15 13:59:37,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand 13795 states and 39383 transitions. [2022-03-15 13:59:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:37,168 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:37,168 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:37,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-03-15 13:59:37,168 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:37,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1484252432, now seen corresponding path program 50 times [2022-03-15 13:59:37,168 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:37,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099212805] [2022-03-15 13:59:37,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:37,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:37,477 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:37,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099212805] [2022-03-15 13:59:37,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099212805] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:37,477 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:37,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:59:37,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011749119] [2022-03-15 13:59:37,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:37,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:59:37,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:37,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:59:37,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:59:37,478 INFO L87 Difference]: Start difference. First operand 13795 states and 39383 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:38,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:38,005 INFO L93 Difference]: Finished difference Result 27032 states and 77634 transitions. [2022-03-15 13:59:38,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:59:38,005 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:38,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:38,057 INFO L225 Difference]: With dead ends: 27032 [2022-03-15 13:59:38,057 INFO L226 Difference]: Without dead ends: 27032 [2022-03-15 13:59:38,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:59:38,057 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 1252 mSDsluCounter, 3618 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 3920 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:38,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 3920 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1126 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:59:38,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27032 states. [2022-03-15 13:59:38,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27032 to 13795. [2022-03-15 13:59:38,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13795 states, 13794 states have (on average 2.855081919675221) internal successors, (39383), 13794 states have internal predecessors, (39383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:38,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13795 states to 13795 states and 39383 transitions. [2022-03-15 13:59:38,412 INFO L78 Accepts]: Start accepts. Automaton has 13795 states and 39383 transitions. Word has length 177 [2022-03-15 13:59:38,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:38,412 INFO L470 AbstractCegarLoop]: Abstraction has 13795 states and 39383 transitions. [2022-03-15 13:59:38,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:38,413 INFO L276 IsEmpty]: Start isEmpty. Operand 13795 states and 39383 transitions. [2022-03-15 13:59:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:38,431 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:38,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:38,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-03-15 13:59:38,432 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:38,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:38,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1947827174, now seen corresponding path program 26 times [2022-03-15 13:59:38,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:38,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921506608] [2022-03-15 13:59:38,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:38,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:38,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:38,652 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:38,652 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921506608] [2022-03-15 13:59:38,652 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921506608] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:38,652 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:38,652 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:59:38,652 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844536139] [2022-03-15 13:59:38,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:38,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:59:38,652 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:38,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:59:38,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:59:38,653 INFO L87 Difference]: Start difference. First operand 13795 states and 39383 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:39,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:39,088 INFO L93 Difference]: Finished difference Result 26928 states and 77340 transitions. [2022-03-15 13:59:39,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 13:59:39,088 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:39,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:39,142 INFO L225 Difference]: With dead ends: 26928 [2022-03-15 13:59:39,142 INFO L226 Difference]: Without dead ends: 26928 [2022-03-15 13:59:39,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 13:59:39,142 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 1064 mSDsluCounter, 2406 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 2716 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:39,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 2716 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:59:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2022-03-15 13:59:39,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 13787. [2022-03-15 13:59:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13787 states, 13786 states have (on average 2.853982300884956) internal successors, (39345), 13786 states have internal predecessors, (39345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13787 states to 13787 states and 39345 transitions. [2022-03-15 13:59:39,425 INFO L78 Accepts]: Start accepts. Automaton has 13787 states and 39345 transitions. Word has length 177 [2022-03-15 13:59:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:39,425 INFO L470 AbstractCegarLoop]: Abstraction has 13787 states and 39345 transitions. [2022-03-15 13:59:39,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:39,425 INFO L276 IsEmpty]: Start isEmpty. Operand 13787 states and 39345 transitions. [2022-03-15 13:59:39,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:39,446 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:39,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:39,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-03-15 13:59:39,446 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:39,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash -150426422, now seen corresponding path program 51 times [2022-03-15 13:59:39,446 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:39,446 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099417165] [2022-03-15 13:59:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:39,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:39,807 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:39,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099417165] [2022-03-15 13:59:39,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099417165] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:39,807 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:39,807 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:59:39,807 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223402673] [2022-03-15 13:59:39,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:39,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:59:39,807 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:39,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:59:39,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:59:39,807 INFO L87 Difference]: Start difference. First operand 13787 states and 39345 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:40,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:40,445 INFO L93 Difference]: Finished difference Result 27424 states and 78736 transitions. [2022-03-15 13:59:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:59:40,445 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:40,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:40,495 INFO L225 Difference]: With dead ends: 27424 [2022-03-15 13:59:40,496 INFO L226 Difference]: Without dead ends: 27424 [2022-03-15 13:59:40,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 13:59:40,496 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 1177 mSDsluCounter, 3856 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 4173 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:40,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 4173 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:59:40,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27424 states. [2022-03-15 13:59:40,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27424 to 13771. [2022-03-15 13:59:40,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13771 states, 13770 states have (on average 2.8541031227305735) internal successors, (39301), 13770 states have internal predecessors, (39301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:40,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13771 states to 13771 states and 39301 transitions. [2022-03-15 13:59:40,774 INFO L78 Accepts]: Start accepts. Automaton has 13771 states and 39301 transitions. Word has length 177 [2022-03-15 13:59:40,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:40,774 INFO L470 AbstractCegarLoop]: Abstraction has 13771 states and 39301 transitions. [2022-03-15 13:59:40,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:40,774 INFO L276 IsEmpty]: Start isEmpty. Operand 13771 states and 39301 transitions. [2022-03-15 13:59:40,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:40,792 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:40,792 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:40,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-03-15 13:59:40,792 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:40,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:40,793 INFO L85 PathProgramCache]: Analyzing trace with hash 144455970, now seen corresponding path program 27 times [2022-03-15 13:59:40,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:40,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705121250] [2022-03-15 13:59:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:41,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:41,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705121250] [2022-03-15 13:59:41,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705121250] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:41,084 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:41,084 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:59:41,084 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531883449] [2022-03-15 13:59:41,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:41,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:59:41,084 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:41,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:59:41,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:59:41,084 INFO L87 Difference]: Start difference. First operand 13771 states and 39301 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:41,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:41,555 INFO L93 Difference]: Finished difference Result 26992 states and 77516 transitions. [2022-03-15 13:59:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:59:41,555 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:41,606 INFO L225 Difference]: With dead ends: 26992 [2022-03-15 13:59:41,606 INFO L226 Difference]: Without dead ends: 26992 [2022-03-15 13:59:41,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 13:59:41,606 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 1150 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:41,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1150 Valid, 3160 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:59:41,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26992 states. [2022-03-15 13:59:41,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26992 to 13787. [2022-03-15 13:59:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13787 states, 13786 states have (on average 2.853982300884956) internal successors, (39345), 13786 states have internal predecessors, (39345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:41,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13787 states to 13787 states and 39345 transitions. [2022-03-15 13:59:41,892 INFO L78 Accepts]: Start accepts. Automaton has 13787 states and 39345 transitions. Word has length 177 [2022-03-15 13:59:41,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:41,892 INFO L470 AbstractCegarLoop]: Abstraction has 13787 states and 39345 transitions. [2022-03-15 13:59:41,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:41,892 INFO L276 IsEmpty]: Start isEmpty. Operand 13787 states and 39345 transitions. [2022-03-15 13:59:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:41,912 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:41,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:41,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-03-15 13:59:41,913 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:41,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:41,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1949907452, now seen corresponding path program 28 times [2022-03-15 13:59:41,913 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:41,913 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121055445] [2022-03-15 13:59:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:41,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:42,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:42,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121055445] [2022-03-15 13:59:42,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121055445] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:42,184 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:42,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:59:42,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180782149] [2022-03-15 13:59:42,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:42,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:59:42,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:42,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:59:42,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:59:42,184 INFO L87 Difference]: Start difference. First operand 13787 states and 39345 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:42,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:42,810 INFO L93 Difference]: Finished difference Result 27856 states and 79988 transitions. [2022-03-15 13:59:42,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 13:59:42,810 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:42,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:42,864 INFO L225 Difference]: With dead ends: 27856 [2022-03-15 13:59:42,864 INFO L226 Difference]: Without dead ends: 27856 [2022-03-15 13:59:42,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 13:59:42,865 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 1354 mSDsluCounter, 2852 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:42,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1354 Valid, 3217 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:59:42,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27856 states. [2022-03-15 13:59:43,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27856 to 13731. [2022-03-15 13:59:43,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13731 states, 13730 states have (on average 2.8526584122359795) internal successors, (39167), 13730 states have internal predecessors, (39167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13731 states to 13731 states and 39167 transitions. [2022-03-15 13:59:43,150 INFO L78 Accepts]: Start accepts. Automaton has 13731 states and 39167 transitions. Word has length 177 [2022-03-15 13:59:43,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:43,150 INFO L470 AbstractCegarLoop]: Abstraction has 13731 states and 39167 transitions. [2022-03-15 13:59:43,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 13731 states and 39167 transitions. [2022-03-15 13:59:43,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:43,169 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:43,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:43,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-03-15 13:59:43,169 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:43,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:43,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1878945178, now seen corresponding path program 38 times [2022-03-15 13:59:43,170 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:43,170 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566506410] [2022-03-15 13:59:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:43,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:43,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:43,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566506410] [2022-03-15 13:59:43,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566506410] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:43,600 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:43,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:59:43,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370735381] [2022-03-15 13:59:43,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:43,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:59:43,600 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:43,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:59:43,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:59:43,601 INFO L87 Difference]: Start difference. First operand 13731 states and 39167 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:44,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:44,378 INFO L93 Difference]: Finished difference Result 27238 states and 78360 transitions. [2022-03-15 13:59:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:59:44,378 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:44,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:44,434 INFO L225 Difference]: With dead ends: 27238 [2022-03-15 13:59:44,434 INFO L226 Difference]: Without dead ends: 27238 [2022-03-15 13:59:44,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=402, Invalid=1238, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 13:59:44,434 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1564 mSDsluCounter, 2875 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:44,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1564 Valid, 3162 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 13:59:44,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27238 states. [2022-03-15 13:59:44,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27238 to 13747. [2022-03-15 13:59:44,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13747 states, 13746 states have (on average 2.8531209079004802) internal successors, (39219), 13746 states have internal predecessors, (39219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13747 states to 13747 states and 39219 transitions. [2022-03-15 13:59:44,831 INFO L78 Accepts]: Start accepts. Automaton has 13747 states and 39219 transitions. Word has length 177 [2022-03-15 13:59:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:44,831 INFO L470 AbstractCegarLoop]: Abstraction has 13747 states and 39219 transitions. [2022-03-15 13:59:44,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:44,831 INFO L276 IsEmpty]: Start isEmpty. Operand 13747 states and 39219 transitions. [2022-03-15 13:59:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:44,854 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:44,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:44,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-03-15 13:59:44,854 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:44,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:44,855 INFO L85 PathProgramCache]: Analyzing trace with hash -220399678, now seen corresponding path program 52 times [2022-03-15 13:59:44,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:44,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503412816] [2022-03-15 13:59:44,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:44,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:45,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:45,192 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:45,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503412816] [2022-03-15 13:59:45,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503412816] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:45,192 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:45,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:59:45,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181172081] [2022-03-15 13:59:45,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:45,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:59:45,192 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:45,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:59:45,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:59:45,193 INFO L87 Difference]: Start difference. First operand 13747 states and 39219 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:45,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:45,910 INFO L93 Difference]: Finished difference Result 27028 states and 77678 transitions. [2022-03-15 13:59:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 13:59:45,910 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:45,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:45,965 INFO L225 Difference]: With dead ends: 27028 [2022-03-15 13:59:45,965 INFO L226 Difference]: Without dead ends: 27028 [2022-03-15 13:59:45,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 13:59:45,966 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 926 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:45,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [926 Valid, 2999 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:59:45,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27028 states. [2022-03-15 13:59:46,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27028 to 13779. [2022-03-15 13:59:46,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13779 states, 13778 states have (on average 2.8528814051386266) internal successors, (39307), 13778 states have internal predecessors, (39307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13779 states to 13779 states and 39307 transitions. [2022-03-15 13:59:46,273 INFO L78 Accepts]: Start accepts. Automaton has 13779 states and 39307 transitions. Word has length 177 [2022-03-15 13:59:46,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:46,273 INFO L470 AbstractCegarLoop]: Abstraction has 13779 states and 39307 transitions. [2022-03-15 13:59:46,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 13779 states and 39307 transitions. [2022-03-15 13:59:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:46,294 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:46,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:46,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-03-15 13:59:46,295 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:46,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:46,295 INFO L85 PathProgramCache]: Analyzing trace with hash 186274222, now seen corresponding path program 53 times [2022-03-15 13:59:46,295 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:46,295 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061927684] [2022-03-15 13:59:46,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:46,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:46,637 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:46,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061927684] [2022-03-15 13:59:46,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061927684] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:46,637 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845640110] [2022-03-15 13:59:46,637 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 13:59:46,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:46,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:59:46,639 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:59:46,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-15 13:59:46,854 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 13:59:46,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:59:46,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 68 conjunts are in the unsatisfiable core [2022-03-15 13:59:46,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:59:46,878 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:46,896 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-15 13:59:46,896 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-15 13:59:47,032 INFO L353 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-03-15 13:59:47,032 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 22 [2022-03-15 13:59:47,368 INFO L353 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-03-15 13:59:47,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 25 [2022-03-15 13:59:47,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:59:47,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:47,743 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:48,375 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 13:59:48,375 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 18 [2022-03-15 13:59:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:59:48,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:59:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:48,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845640110] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:48,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 13:59:48,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [20, 27] total 55 [2022-03-15 13:59:48,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156418725] [2022-03-15 13:59:48,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:48,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 13:59:48,899 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:48,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 13:59:48,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2658, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 13:59:48,900 INFO L87 Difference]: Start difference. First operand 13779 states and 39307 transitions. Second operand has 12 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:50,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:50,152 INFO L93 Difference]: Finished difference Result 39084 states and 112450 transitions. [2022-03-15 13:59:50,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 13:59:50,153 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:50,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:50,226 INFO L225 Difference]: With dead ends: 39084 [2022-03-15 13:59:50,226 INFO L226 Difference]: Without dead ends: 39084 [2022-03-15 13:59:50,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1806 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=597, Invalid=4805, Unknown=0, NotChecked=0, Total=5402 [2022-03-15 13:59:50,227 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 863 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 3579 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:50,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 3579 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 13:59:50,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39084 states. [2022-03-15 13:59:50,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39084 to 15389. [2022-03-15 13:59:50,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15389 states, 15388 states have (on average 2.8659344944112295) internal successors, (44101), 15388 states have internal predecessors, (44101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:50,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15389 states to 15389 states and 44101 transitions. [2022-03-15 13:59:50,613 INFO L78 Accepts]: Start accepts. Automaton has 15389 states and 44101 transitions. Word has length 177 [2022-03-15 13:59:50,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:50,614 INFO L470 AbstractCegarLoop]: Abstraction has 15389 states and 44101 transitions. [2022-03-15 13:59:50,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.75) internal successors, (177), 12 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:50,614 INFO L276 IsEmpty]: Start isEmpty. Operand 15389 states and 44101 transitions. [2022-03-15 13:59:50,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:50,634 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:50,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:50,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-15 13:59:50,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2022-03-15 13:59:50,846 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:50,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash 548390286, now seen corresponding path program 34 times [2022-03-15 13:59:50,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:50,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684721180] [2022-03-15 13:59:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:50,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:51,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:51,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684721180] [2022-03-15 13:59:51,148 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684721180] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 13:59:51,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472070786] [2022-03-15 13:59:51,148 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 13:59:51,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:51,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 13:59:51,149 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 13:59:51,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-15 13:59:51,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 13:59:51,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 13:59:51,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-15 13:59:51,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 13:59:51,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 13:59:52,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:52,117 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 13:59:52,354 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-03-15 13:59:52,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 13:59:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 13:59:52,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 13:59:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:54,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472070786] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 13:59:54,244 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 13:59:54,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 9] total 43 [2022-03-15 13:59:54,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107846265] [2022-03-15 13:59:54,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 13:59:54,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 13:59:54,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:54,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 13:59:54,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1612, Unknown=2, NotChecked=0, Total=1806 [2022-03-15 13:59:54,245 INFO L87 Difference]: Start difference. First operand 15389 states and 44101 transitions. Second operand has 43 states, 43 states have (on average 8.604651162790697) internal successors, (370), 43 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:56,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:56,453 INFO L93 Difference]: Finished difference Result 31455 states and 90653 transitions. [2022-03-15 13:59:56,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-15 13:59:56,454 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 8.604651162790697) internal successors, (370), 43 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:56,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:56,514 INFO L225 Difference]: With dead ends: 31455 [2022-03-15 13:59:56,514 INFO L226 Difference]: Without dead ends: 31455 [2022-03-15 13:59:56,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 346 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1559, Invalid=5579, Unknown=2, NotChecked=0, Total=7140 [2022-03-15 13:59:56,515 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 1782 mSDsluCounter, 6031 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 6353 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 399 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:56,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1782 Valid, 6353 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1748 Invalid, 0 Unknown, 399 Unchecked, 0.6s Time] [2022-03-15 13:59:56,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31455 states. [2022-03-15 13:59:56,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31455 to 15357. [2022-03-15 13:59:56,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15357 states, 15356 states have (on average 2.8661760875227924) internal successors, (44013), 15356 states have internal predecessors, (44013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:56,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15357 states to 15357 states and 44013 transitions. [2022-03-15 13:59:56,972 INFO L78 Accepts]: Start accepts. Automaton has 15357 states and 44013 transitions. Word has length 177 [2022-03-15 13:59:56,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:56,972 INFO L470 AbstractCegarLoop]: Abstraction has 15357 states and 44013 transitions. [2022-03-15 13:59:56,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 8.604651162790697) internal successors, (370), 43 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 15357 states and 44013 transitions. [2022-03-15 13:59:56,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:56,993 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:56,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:57,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-15 13:59:57,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 13:59:57,210 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:57,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:57,212 INFO L85 PathProgramCache]: Analyzing trace with hash -577479552, now seen corresponding path program 39 times [2022-03-15 13:59:57,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:57,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622417545] [2022-03-15 13:59:57,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:57,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:57,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:57,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:57,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622417545] [2022-03-15 13:59:57,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622417545] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:57,552 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:57,552 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 13:59:57,552 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106554875] [2022-03-15 13:59:57,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:57,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 13:59:57,552 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:57,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 13:59:57,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-15 13:59:57,552 INFO L87 Difference]: Start difference. First operand 15357 states and 44013 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:58,212 INFO L93 Difference]: Finished difference Result 28802 states and 82932 transitions. [2022-03-15 13:59:58,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:59:58,212 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:58,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:58,268 INFO L225 Difference]: With dead ends: 28802 [2022-03-15 13:59:58,268 INFO L226 Difference]: Without dead ends: 28802 [2022-03-15 13:59:58,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 13:59:58,269 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1255 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:58,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1255 Valid, 2957 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 13:59:58,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28802 states. [2022-03-15 13:59:58,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28802 to 15373. [2022-03-15 13:59:58,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15373 states, 15372 states have (on average 2.867096018735363) internal successors, (44073), 15372 states have internal predecessors, (44073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:58,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15373 states to 15373 states and 44073 transitions. [2022-03-15 13:59:58,568 INFO L78 Accepts]: Start accepts. Automaton has 15373 states and 44073 transitions. Word has length 177 [2022-03-15 13:59:58,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:58,569 INFO L470 AbstractCegarLoop]: Abstraction has 15373 states and 44073 transitions. [2022-03-15 13:59:58,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:58,569 INFO L276 IsEmpty]: Start isEmpty. Operand 15373 states and 44073 transitions. [2022-03-15 13:59:58,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:58,589 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:58,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:58,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-03-15 13:59:58,590 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:58,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:58,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1630312826, now seen corresponding path program 54 times [2022-03-15 13:59:58,590 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:58,590 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010524655] [2022-03-15 13:59:58,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:58,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 13:59:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 13:59:58,887 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 13:59:58,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010524655] [2022-03-15 13:59:58,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010524655] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 13:59:58,888 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 13:59:58,888 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 13:59:58,888 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497518174] [2022-03-15 13:59:58,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 13:59:58,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 13:59:58,888 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 13:59:58,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 13:59:58,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 13:59:58,888 INFO L87 Difference]: Start difference. First operand 15373 states and 44073 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:59,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 13:59:59,350 INFO L93 Difference]: Finished difference Result 28758 states and 82818 transitions. [2022-03-15 13:59:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 13:59:59,351 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 13:59:59,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 13:59:59,404 INFO L225 Difference]: With dead ends: 28758 [2022-03-15 13:59:59,404 INFO L226 Difference]: Without dead ends: 28758 [2022-03-15 13:59:59,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=352, Invalid=1054, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 13:59:59,405 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1191 mSDsluCounter, 2487 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 13:59:59,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1191 Valid, 2784 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 13:59:59,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28758 states. [2022-03-15 13:59:59,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28758 to 15381. [2022-03-15 13:59:59,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15381 states, 15380 states have (on average 2.86703511053316) internal successors, (44095), 15380 states have internal predecessors, (44095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15381 states to 15381 states and 44095 transitions. [2022-03-15 13:59:59,701 INFO L78 Accepts]: Start accepts. Automaton has 15381 states and 44095 transitions. Word has length 177 [2022-03-15 13:59:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 13:59:59,702 INFO L470 AbstractCegarLoop]: Abstraction has 15381 states and 44095 transitions. [2022-03-15 13:59:59,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 13:59:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 15381 states and 44095 transitions. [2022-03-15 13:59:59,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 13:59:59,722 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 13:59:59,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 13:59:59,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-03-15 13:59:59,723 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 13:59:59,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 13:59:59,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1902844224, now seen corresponding path program 55 times [2022-03-15 13:59:59,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 13:59:59,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788174208] [2022-03-15 13:59:59,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 13:59:59,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 13:59:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:00,009 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:00,009 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788174208] [2022-03-15 14:00:00,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788174208] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:00,009 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:00,009 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:00:00,009 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270287216] [2022-03-15 14:00:00,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:00,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:00:00,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:00,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:00:00,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:00:00,010 INFO L87 Difference]: Start difference. First operand 15381 states and 44095 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:00,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:00,646 INFO L93 Difference]: Finished difference Result 29064 states and 83696 transitions. [2022-03-15 14:00:00,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:00:00,646 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:00,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:00,708 INFO L225 Difference]: With dead ends: 29064 [2022-03-15 14:00:00,708 INFO L226 Difference]: Without dead ends: 29064 [2022-03-15 14:00:00,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:00:00,709 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 908 mSDsluCounter, 3547 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 3833 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:00,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 3833 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:00:00,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29064 states. [2022-03-15 14:00:01,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29064 to 15373. [2022-03-15 14:00:01,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15373 states, 15372 states have (on average 2.867096018735363) internal successors, (44073), 15372 states have internal predecessors, (44073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:01,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15373 states to 15373 states and 44073 transitions. [2022-03-15 14:00:01,066 INFO L78 Accepts]: Start accepts. Automaton has 15373 states and 44073 transitions. Word has length 177 [2022-03-15 14:00:01,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:01,066 INFO L470 AbstractCegarLoop]: Abstraction has 15373 states and 44073 transitions. [2022-03-15 14:00:01,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:01,066 INFO L276 IsEmpty]: Start isEmpty. Operand 15373 states and 44073 transitions. [2022-03-15 14:00:01,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:01,092 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:01,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:01,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-03-15 14:00:01,092 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:01,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:01,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1439269482, now seen corresponding path program 29 times [2022-03-15 14:00:01,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:01,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219062199] [2022-03-15 14:00:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:01,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:01,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:01,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219062199] [2022-03-15 14:00:01,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219062199] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:01,492 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:01,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:00:01,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797666107] [2022-03-15 14:00:01,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:01,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:00:01,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:01,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:00:01,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:00:01,493 INFO L87 Difference]: Start difference. First operand 15373 states and 44073 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:02,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:02,149 INFO L93 Difference]: Finished difference Result 28960 states and 83402 transitions. [2022-03-15 14:00:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:00:02,149 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:02,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:02,209 INFO L225 Difference]: With dead ends: 28960 [2022-03-15 14:00:02,209 INFO L226 Difference]: Without dead ends: 28960 [2022-03-15 14:00:02,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:00:02,210 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 975 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:02,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 3128 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:00:02,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28960 states. [2022-03-15 14:00:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28960 to 15349. [2022-03-15 14:00:02,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15349 states, 15348 states have (on average 2.865715402658327) internal successors, (43983), 15348 states have internal predecessors, (43983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:02,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15349 states to 15349 states and 43983 transitions. [2022-03-15 14:00:02,530 INFO L78 Accepts]: Start accepts. Automaton has 15349 states and 43983 transitions. Word has length 177 [2022-03-15 14:00:02,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:02,530 INFO L470 AbstractCegarLoop]: Abstraction has 15349 states and 43983 transitions. [2022-03-15 14:00:02,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:02,530 INFO L276 IsEmpty]: Start isEmpty. Operand 15349 states and 43983 transitions. [2022-03-15 14:00:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:02,552 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:02,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:02,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-03-15 14:00:02,552 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:02,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:02,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2041566512, now seen corresponding path program 40 times [2022-03-15 14:00:02,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:02,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165470118] [2022-03-15 14:00:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:02,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:02,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:02,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165470118] [2022-03-15 14:00:02,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165470118] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:02,921 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:02,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:00:02,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551487768] [2022-03-15 14:00:02,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:02,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:00:02,922 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:02,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:00:02,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:00:02,922 INFO L87 Difference]: Start difference. First operand 15349 states and 43983 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:03,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:03,627 INFO L93 Difference]: Finished difference Result 28786 states and 82856 transitions. [2022-03-15 14:00:03,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 14:00:03,627 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:03,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:03,694 INFO L225 Difference]: With dead ends: 28786 [2022-03-15 14:00:03,694 INFO L226 Difference]: Without dead ends: 28786 [2022-03-15 14:00:03,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 14:00:03,695 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 890 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2996 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:03,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 2996 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:00:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28786 states. [2022-03-15 14:00:04,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28786 to 15381. [2022-03-15 14:00:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15381 states, 15380 states have (on average 2.86703511053316) internal successors, (44095), 15380 states have internal predecessors, (44095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:04,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15381 states to 15381 states and 44095 transitions. [2022-03-15 14:00:04,155 INFO L78 Accepts]: Start accepts. Automaton has 15381 states and 44095 transitions. Word has length 177 [2022-03-15 14:00:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:04,156 INFO L470 AbstractCegarLoop]: Abstraction has 15381 states and 44095 transitions. [2022-03-15 14:00:04,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 15381 states and 44095 transitions. [2022-03-15 14:00:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:04,180 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:04,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:04,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-03-15 14:00:04,181 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:04,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:04,182 INFO L85 PathProgramCache]: Analyzing trace with hash 988733238, now seen corresponding path program 56 times [2022-03-15 14:00:04,182 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:04,182 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940112642] [2022-03-15 14:00:04,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:04,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:04,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:04,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940112642] [2022-03-15 14:00:04,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940112642] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:04,504 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:04,504 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:00:04,504 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787847526] [2022-03-15 14:00:04,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:04,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:00:04,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:04,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:00:04,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:00:04,505 INFO L87 Difference]: Start difference. First operand 15381 states and 44095 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:05,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:05,310 INFO L93 Difference]: Finished difference Result 28750 states and 82764 transitions. [2022-03-15 14:00:05,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 14:00:05,310 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:05,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:05,377 INFO L225 Difference]: With dead ends: 28750 [2022-03-15 14:00:05,377 INFO L226 Difference]: Without dead ends: 28750 [2022-03-15 14:00:05,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:00:05,378 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 1207 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 3638 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:05,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 3638 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:00:05,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28750 states. [2022-03-15 14:00:05,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28750 to 15397. [2022-03-15 14:00:05,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15397 states, 15396 states have (on average 2.8669134840218238) internal successors, (44139), 15396 states have internal predecessors, (44139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15397 states to 15397 states and 44139 transitions. [2022-03-15 14:00:05,714 INFO L78 Accepts]: Start accepts. Automaton has 15397 states and 44139 transitions. Word has length 177 [2022-03-15 14:00:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:05,714 INFO L470 AbstractCegarLoop]: Abstraction has 15397 states and 44139 transitions. [2022-03-15 14:00:05,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 15397 states and 44139 transitions. [2022-03-15 14:00:05,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:05,738 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:05,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:05,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-03-15 14:00:05,739 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:05,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:05,739 INFO L85 PathProgramCache]: Analyzing trace with hash 716201840, now seen corresponding path program 57 times [2022-03-15 14:00:05,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:05,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592330428] [2022-03-15 14:00:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:05,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:06,025 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:06,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592330428] [2022-03-15 14:00:06,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592330428] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:06,025 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:06,025 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:00:06,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861149771] [2022-03-15 14:00:06,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:06,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:00:06,026 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:06,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:00:06,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:00:06,026 INFO L87 Difference]: Start difference. First operand 15397 states and 44139 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:06,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:06,643 INFO L93 Difference]: Finished difference Result 29072 states and 83686 transitions. [2022-03-15 14:00:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 14:00:06,643 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:06,712 INFO L225 Difference]: With dead ends: 29072 [2022-03-15 14:00:06,712 INFO L226 Difference]: Without dead ends: 29072 [2022-03-15 14:00:06,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 14:00:06,713 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 952 mSDsluCounter, 3153 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 3459 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:06,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 3459 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:00:06,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29072 states. [2022-03-15 14:00:07,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29072 to 15397. [2022-03-15 14:00:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15397 states, 15396 states have (on average 2.8669134840218238) internal successors, (44139), 15396 states have internal predecessors, (44139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:07,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15397 states to 15397 states and 44139 transitions. [2022-03-15 14:00:07,074 INFO L78 Accepts]: Start accepts. Automaton has 15397 states and 44139 transitions. Word has length 177 [2022-03-15 14:00:07,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:07,075 INFO L470 AbstractCegarLoop]: Abstraction has 15397 states and 44139 transitions. [2022-03-15 14:00:07,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:07,075 INFO L276 IsEmpty]: Start isEmpty. Operand 15397 states and 44139 transitions. [2022-03-15 14:00:07,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:07,098 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:07,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:07,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-03-15 14:00:07,098 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:07,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:07,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1179776582, now seen corresponding path program 30 times [2022-03-15 14:00:07,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:07,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117081030] [2022-03-15 14:00:07,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:07,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:07,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:07,364 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:07,364 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117081030] [2022-03-15 14:00:07,364 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117081030] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:07,364 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:07,364 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:00:07,364 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590017627] [2022-03-15 14:00:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:07,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:00:07,365 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:00:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:00:07,365 INFO L87 Difference]: Start difference. First operand 15397 states and 44139 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:08,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:08,034 INFO L93 Difference]: Finished difference Result 28976 states and 83414 transitions. [2022-03-15 14:00:08,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 14:00:08,035 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:08,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:08,098 INFO L225 Difference]: With dead ends: 28976 [2022-03-15 14:00:08,098 INFO L226 Difference]: Without dead ends: 28976 [2022-03-15 14:00:08,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=350, Invalid=1056, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:00:08,098 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1222 mSDsluCounter, 3165 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 3452 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:08,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 3452 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1069 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:00:08,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28976 states. [2022-03-15 14:00:08,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28976 to 15389. [2022-03-15 14:00:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15389 states, 15388 states have (on average 2.8659344944112295) internal successors, (44101), 15388 states have internal predecessors, (44101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:08,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15389 states to 15389 states and 44101 transitions. [2022-03-15 14:00:08,442 INFO L78 Accepts]: Start accepts. Automaton has 15389 states and 44101 transitions. Word has length 177 [2022-03-15 14:00:08,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:08,442 INFO L470 AbstractCegarLoop]: Abstraction has 15389 states and 44101 transitions. [2022-03-15 14:00:08,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:08,442 INFO L276 IsEmpty]: Start isEmpty. Operand 15389 states and 44101 transitions. [2022-03-15 14:00:08,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:08,466 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:08,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:08,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-03-15 14:00:08,466 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:08,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:08,466 INFO L85 PathProgramCache]: Analyzing trace with hash -918477014, now seen corresponding path program 58 times [2022-03-15 14:00:08,466 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:08,466 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854961062] [2022-03-15 14:00:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:08,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:08,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:08,846 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:08,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854961062] [2022-03-15 14:00:08,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854961062] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:08,846 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:08,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:00:08,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841564183] [2022-03-15 14:00:08,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:08,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:00:08,847 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:08,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:00:08,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:00:08,847 INFO L87 Difference]: Start difference. First operand 15389 states and 44101 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:09,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:09,601 INFO L93 Difference]: Finished difference Result 29408 states and 84618 transitions. [2022-03-15 14:00:09,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 14:00:09,602 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:09,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:09,665 INFO L225 Difference]: With dead ends: 29408 [2022-03-15 14:00:09,665 INFO L226 Difference]: Without dead ends: 29408 [2022-03-15 14:00:09,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:00:09,666 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1002 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:09,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1002 Valid, 3214 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:00:09,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29408 states. [2022-03-15 14:00:10,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29408 to 15373. [2022-03-15 14:00:10,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15373 states, 15372 states have (on average 2.866055165235493) internal successors, (44057), 15372 states have internal predecessors, (44057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15373 states to 15373 states and 44057 transitions. [2022-03-15 14:00:10,063 INFO L78 Accepts]: Start accepts. Automaton has 15373 states and 44057 transitions. Word has length 177 [2022-03-15 14:00:10,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:10,063 INFO L470 AbstractCegarLoop]: Abstraction has 15373 states and 44057 transitions. [2022-03-15 14:00:10,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:10,063 INFO L276 IsEmpty]: Start isEmpty. Operand 15373 states and 44057 transitions. [2022-03-15 14:00:10,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:10,087 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:10,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:10,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-03-15 14:00:10,087 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:10,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:10,088 INFO L85 PathProgramCache]: Analyzing trace with hash -623594622, now seen corresponding path program 31 times [2022-03-15 14:00:10,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:10,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229514804] [2022-03-15 14:00:10,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:10,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:10,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:10,468 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:10,469 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229514804] [2022-03-15 14:00:10,469 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229514804] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:10,469 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:10,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:00:10,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202040683] [2022-03-15 14:00:10,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:10,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:00:10,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:00:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:00:10,469 INFO L87 Difference]: Start difference. First operand 15373 states and 44057 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:11,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:11,345 INFO L93 Difference]: Finished difference Result 28984 states and 83420 transitions. [2022-03-15 14:00:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 14:00:11,346 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:11,404 INFO L225 Difference]: With dead ends: 28984 [2022-03-15 14:00:11,404 INFO L226 Difference]: Without dead ends: 28984 [2022-03-15 14:00:11,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=388, Invalid=1172, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 14:00:11,404 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1235 mSDsluCounter, 3317 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 3616 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:11,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 3616 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:00:11,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28984 states. [2022-03-15 14:00:11,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28984 to 15389. [2022-03-15 14:00:11,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15389 states, 15388 states have (on average 2.8659344944112295) internal successors, (44101), 15388 states have internal predecessors, (44101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:11,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15389 states to 15389 states and 44101 transitions. [2022-03-15 14:00:11,725 INFO L78 Accepts]: Start accepts. Automaton has 15389 states and 44101 transitions. Word has length 177 [2022-03-15 14:00:11,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:11,725 INFO L470 AbstractCegarLoop]: Abstraction has 15389 states and 44101 transitions. [2022-03-15 14:00:11,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 15389 states and 44101 transitions. [2022-03-15 14:00:11,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:11,748 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:11,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:11,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-03-15 14:00:11,748 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:11,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:11,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1577009252, now seen corresponding path program 32 times [2022-03-15 14:00:11,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:11,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634967678] [2022-03-15 14:00:11,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:11,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:11,995 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:11,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634967678] [2022-03-15 14:00:11,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634967678] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:11,995 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:11,995 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:00:11,995 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403092702] [2022-03-15 14:00:11,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:11,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:00:11,995 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:11,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:00:11,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:00:11,995 INFO L87 Difference]: Start difference. First operand 15389 states and 44101 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:12,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:12,593 INFO L93 Difference]: Finished difference Result 29848 states and 85892 transitions. [2022-03-15 14:00:12,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 14:00:12,593 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:12,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:12,652 INFO L225 Difference]: With dead ends: 29848 [2022-03-15 14:00:12,652 INFO L226 Difference]: Without dead ends: 29848 [2022-03-15 14:00:12,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:00:12,653 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 1196 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 3744 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:12,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1196 Valid, 3744 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:00:12,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29848 states. [2022-03-15 14:00:12,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29848 to 15325. [2022-03-15 14:00:12,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15325 states, 15324 states have (on average 2.865896632732968) internal successors, (43917), 15324 states have internal predecessors, (43917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:12,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15325 states to 15325 states and 43917 transitions. [2022-03-15 14:00:12,974 INFO L78 Accepts]: Start accepts. Automaton has 15325 states and 43917 transitions. Word has length 177 [2022-03-15 14:00:12,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:12,975 INFO L470 AbstractCegarLoop]: Abstraction has 15325 states and 43917 transitions. [2022-03-15 14:00:12,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:12,975 INFO L276 IsEmpty]: Start isEmpty. Operand 15325 states and 43917 transitions. [2022-03-15 14:00:12,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:12,996 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:12,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:12,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-03-15 14:00:12,996 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:12,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:12,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2110443726, now seen corresponding path program 41 times [2022-03-15 14:00:12,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:12,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814072123] [2022-03-15 14:00:12,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:12,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:13,320 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:13,321 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814072123] [2022-03-15 14:00:13,321 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814072123] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:13,321 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:13,321 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:00:13,321 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55597212] [2022-03-15 14:00:13,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:13,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:00:13,321 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:13,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:00:13,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:00:13,321 INFO L87 Difference]: Start difference. First operand 15325 states and 43917 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:14,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:14,137 INFO L93 Difference]: Finished difference Result 28170 states and 80948 transitions. [2022-03-15 14:00:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 14:00:14,137 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:14,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:14,194 INFO L225 Difference]: With dead ends: 28170 [2022-03-15 14:00:14,195 INFO L226 Difference]: Without dead ends: 28170 [2022-03-15 14:00:14,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 14:00:14,195 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 1035 mSDsluCounter, 3968 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 4312 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:14,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 4312 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:00:14,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28170 states. [2022-03-15 14:00:14,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28170 to 15277. [2022-03-15 14:00:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15277 states, 15276 states have (on average 2.8662608012568733) internal successors, (43785), 15276 states have internal predecessors, (43785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:14,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15277 states to 15277 states and 43785 transitions. [2022-03-15 14:00:14,512 INFO L78 Accepts]: Start accepts. Automaton has 15277 states and 43785 transitions. Word has length 177 [2022-03-15 14:00:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:14,512 INFO L470 AbstractCegarLoop]: Abstraction has 15277 states and 43785 transitions. [2022-03-15 14:00:14,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 15277 states and 43785 transitions. [2022-03-15 14:00:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:14,535 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:14,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:14,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-03-15 14:00:14,535 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:14,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:14,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1312300756, now seen corresponding path program 42 times [2022-03-15 14:00:14,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:14,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174850166] [2022-03-15 14:00:14,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:14,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:14,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:14,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:14,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174850166] [2022-03-15 14:00:14,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174850166] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:14,968 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:14,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:00:14,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800722154] [2022-03-15 14:00:14,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:14,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:00:14,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:14,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:00:14,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:00:14,969 INFO L87 Difference]: Start difference. First operand 15277 states and 43785 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:15,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:15,805 INFO L93 Difference]: Finished difference Result 28558 states and 82212 transitions. [2022-03-15 14:00:15,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 14:00:15,806 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:15,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:15,872 INFO L225 Difference]: With dead ends: 28558 [2022-03-15 14:00:15,872 INFO L226 Difference]: Without dead ends: 28558 [2022-03-15 14:00:15,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:00:15,873 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 1471 mSDsluCounter, 3276 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 3601 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:15,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1471 Valid, 3601 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:00:15,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28558 states. [2022-03-15 14:00:16,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28558 to 15285. [2022-03-15 14:00:16,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15285 states, 15284 states have (on average 2.8667233708453286) internal successors, (43815), 15284 states have internal predecessors, (43815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:16,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15285 states to 15285 states and 43815 transitions. [2022-03-15 14:00:16,255 INFO L78 Accepts]: Start accepts. Automaton has 15285 states and 43815 transitions. Word has length 177 [2022-03-15 14:00:16,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:16,256 INFO L470 AbstractCegarLoop]: Abstraction has 15285 states and 43815 transitions. [2022-03-15 14:00:16,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:16,256 INFO L276 IsEmpty]: Start isEmpty. Operand 15285 states and 43815 transitions. [2022-03-15 14:00:16,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:16,281 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:16,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:16,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-03-15 14:00:16,281 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:16,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:16,281 INFO L85 PathProgramCache]: Analyzing trace with hash 883321684, now seen corresponding path program 59 times [2022-03-15 14:00:16,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:16,282 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199990430] [2022-03-15 14:00:16,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:16,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:16,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:16,689 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199990430] [2022-03-15 14:00:16,689 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199990430] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:16,689 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:16,689 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:00:16,689 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666644045] [2022-03-15 14:00:16,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:16,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:00:16,689 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:16,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:00:16,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:00:16,689 INFO L87 Difference]: Start difference. First operand 15285 states and 43815 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:17,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:17,443 INFO L93 Difference]: Finished difference Result 28230 states and 81210 transitions. [2022-03-15 14:00:17,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 14:00:17,443 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:17,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:17,498 INFO L225 Difference]: With dead ends: 28230 [2022-03-15 14:00:17,498 INFO L226 Difference]: Without dead ends: 28230 [2022-03-15 14:00:17,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 14:00:17,499 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 865 mSDsluCounter, 3446 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 3763 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:17,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 3763 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:00:17,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28230 states. [2022-03-15 14:00:17,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28230 to 15317. [2022-03-15 14:00:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15317 states, 15316 states have (on average 2.8664794985635935) internal successors, (43903), 15316 states have internal predecessors, (43903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15317 states to 15317 states and 43903 transitions. [2022-03-15 14:00:17,834 INFO L78 Accepts]: Start accepts. Automaton has 15317 states and 43903 transitions. Word has length 177 [2022-03-15 14:00:17,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:17,834 INFO L470 AbstractCegarLoop]: Abstraction has 15317 states and 43903 transitions. [2022-03-15 14:00:17,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:17,834 INFO L276 IsEmpty]: Start isEmpty. Operand 15317 states and 43903 transitions. [2022-03-15 14:00:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:17,855 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:17,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:17,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-03-15 14:00:17,856 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:17,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1289995584, now seen corresponding path program 60 times [2022-03-15 14:00:17,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:17,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003785017] [2022-03-15 14:00:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:17,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:18,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:18,278 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:18,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003785017] [2022-03-15 14:00:18,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003785017] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:00:18,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222573656] [2022-03-15 14:00:18,278 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:00:18,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:00:18,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:00:18,279 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:00:18,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-15 14:00:18,499 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:00:18,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:00:18,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 62 conjunts are in the unsatisfiable core [2022-03-15 14:00:18,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:00:18,739 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:00:18,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:00:19,106 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:00:19,107 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:00:19,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:00:19,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:00:19,467 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:00:19,840 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2022-03-15 14:00:19,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:00:19,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:00:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:20,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222573656] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:00:20,305 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:00:20,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 12] total 56 [2022-03-15 14:00:20,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612789070] [2022-03-15 14:00:20,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:00:20,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-15 14:00:20,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:20,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-15 14:00:20,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2826, Unknown=0, NotChecked=0, Total=3080 [2022-03-15 14:00:20,306 INFO L87 Difference]: Start difference. First operand 15317 states and 43903 transitions. Second operand has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:30,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:30,416 INFO L93 Difference]: Finished difference Result 43125 states and 123719 transitions. [2022-03-15 14:00:30,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-15 14:00:30,424 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:30,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:30,509 INFO L225 Difference]: With dead ends: 43125 [2022-03-15 14:00:30,509 INFO L226 Difference]: Without dead ends: 43125 [2022-03-15 14:00:30,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4062 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=3595, Invalid=14765, Unknown=0, NotChecked=0, Total=18360 [2022-03-15 14:00:30,512 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 4083 mSDsluCounter, 15531 mSDsCounter, 0 mSdLazyCounter, 5238 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 15865 SdHoareTripleChecker+Invalid, 5676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 5238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 361 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:30,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4083 Valid, 15865 Invalid, 5676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 5238 Invalid, 0 Unknown, 361 Unchecked, 2.2s Time] [2022-03-15 14:00:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43125 states. [2022-03-15 14:00:30,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43125 to 15754. [2022-03-15 14:00:30,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15754 states, 15753 states have (on average 2.8696756173427285) internal successors, (45206), 15753 states have internal predecessors, (45206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15754 states to 15754 states and 45206 transitions. [2022-03-15 14:00:30,969 INFO L78 Accepts]: Start accepts. Automaton has 15754 states and 45206 transitions. Word has length 177 [2022-03-15 14:00:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:30,969 INFO L470 AbstractCegarLoop]: Abstraction has 15754 states and 45206 transitions. [2022-03-15 14:00:30,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 7.142857142857143) internal successors, (400), 56 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 15754 states and 45206 transitions. [2022-03-15 14:00:30,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:30,991 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:30,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:31,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-15 14:00:31,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2022-03-15 14:00:31,208 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:31,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:31,208 INFO L85 PathProgramCache]: Analyzing trace with hash 526241810, now seen corresponding path program 43 times [2022-03-15 14:00:31,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:31,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686043467] [2022-03-15 14:00:31,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:31,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:31,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:31,559 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:31,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686043467] [2022-03-15 14:00:31,560 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686043467] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:31,560 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:31,560 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:00:31,560 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022108275] [2022-03-15 14:00:31,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:31,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:00:31,560 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:31,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:00:31,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:00:31,560 INFO L87 Difference]: Start difference. First operand 15754 states and 45206 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:32,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:32,261 INFO L93 Difference]: Finished difference Result 27286 states and 78202 transitions. [2022-03-15 14:00:32,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:00:32,261 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:32,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:32,314 INFO L225 Difference]: With dead ends: 27286 [2022-03-15 14:00:32,315 INFO L226 Difference]: Without dead ends: 27286 [2022-03-15 14:00:32,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:00:32,315 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 1028 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 3487 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:32,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 3487 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:00:32,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27286 states. [2022-03-15 14:00:32,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27286 to 15770. [2022-03-15 14:00:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15770 states, 15769 states have (on average 2.8705688375927454) internal successors, (45266), 15769 states have internal predecessors, (45266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:32,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15770 states to 15770 states and 45266 transitions. [2022-03-15 14:00:32,699 INFO L78 Accepts]: Start accepts. Automaton has 15770 states and 45266 transitions. Word has length 177 [2022-03-15 14:00:32,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:32,699 INFO L470 AbstractCegarLoop]: Abstraction has 15770 states and 45266 transitions. [2022-03-15 14:00:32,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:32,699 INFO L276 IsEmpty]: Start isEmpty. Operand 15770 states and 45266 transitions. [2022-03-15 14:00:32,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:32,721 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:32,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:32,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-03-15 14:00:32,721 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:32,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:32,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1000671752, now seen corresponding path program 35 times [2022-03-15 14:00:32,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:32,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035318008] [2022-03-15 14:00:32,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:32,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:33,052 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:33,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035318008] [2022-03-15 14:00:33,052 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035318008] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:33,052 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:33,052 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:00:33,052 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534267007] [2022-03-15 14:00:33,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:33,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:00:33,052 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:33,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:00:33,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:00:33,053 INFO L87 Difference]: Start difference. First operand 15770 states and 45266 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:33,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:33,563 INFO L93 Difference]: Finished difference Result 27258 states and 78140 transitions. [2022-03-15 14:00:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:00:33,563 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:33,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:33,616 INFO L225 Difference]: With dead ends: 27258 [2022-03-15 14:00:33,616 INFO L226 Difference]: Without dead ends: 27258 [2022-03-15 14:00:33,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=1006, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:00:33,616 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 1052 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:33,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1052 Valid, 2924 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:00:33,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27258 states. [2022-03-15 14:00:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27258 to 15778. [2022-03-15 14:00:33,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15778 states, 15777 states have (on average 2.8705077010838562) internal successors, (45288), 15777 states have internal predecessors, (45288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15778 states to 15778 states and 45288 transitions. [2022-03-15 14:00:33,924 INFO L78 Accepts]: Start accepts. Automaton has 15778 states and 45288 transitions. Word has length 177 [2022-03-15 14:00:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:33,924 INFO L470 AbstractCegarLoop]: Abstraction has 15778 states and 45288 transitions. [2022-03-15 14:00:33,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:33,924 INFO L276 IsEmpty]: Start isEmpty. Operand 15778 states and 45288 transitions. [2022-03-15 14:00:33,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:33,946 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:33,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:33,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-03-15 14:00:33,946 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:33,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:33,946 INFO L85 PathProgramCache]: Analyzing trace with hash -799122862, now seen corresponding path program 61 times [2022-03-15 14:00:33,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:33,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731831204] [2022-03-15 14:00:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:33,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:34,173 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:34,173 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731831204] [2022-03-15 14:00:34,173 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731831204] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:34,173 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:34,173 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:00:34,173 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962759935] [2022-03-15 14:00:34,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:34,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:00:34,173 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:34,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:00:34,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:00:34,174 INFO L87 Difference]: Start difference. First operand 15778 states and 45288 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:34,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:34,671 INFO L93 Difference]: Finished difference Result 27684 states and 79348 transitions. [2022-03-15 14:00:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 14:00:34,672 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:34,725 INFO L225 Difference]: With dead ends: 27684 [2022-03-15 14:00:34,725 INFO L226 Difference]: Without dead ends: 27684 [2022-03-15 14:00:34,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:00:34,725 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 895 mSDsluCounter, 3449 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 3775 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:34,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 3775 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:00:34,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27684 states. [2022-03-15 14:00:34,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27684 to 15770. [2022-03-15 14:00:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15770 states, 15769 states have (on average 2.8705688375927454) internal successors, (45266), 15769 states have internal predecessors, (45266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15770 states to 15770 states and 45266 transitions. [2022-03-15 14:00:35,034 INFO L78 Accepts]: Start accepts. Automaton has 15770 states and 45266 transitions. Word has length 177 [2022-03-15 14:00:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:35,034 INFO L470 AbstractCegarLoop]: Abstraction has 15770 states and 45266 transitions. [2022-03-15 14:00:35,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:35,034 INFO L276 IsEmpty]: Start isEmpty. Operand 15770 states and 45266 transitions. [2022-03-15 14:00:35,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:35,056 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:35,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:35,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-03-15 14:00:35,056 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:35,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:35,056 INFO L85 PathProgramCache]: Analyzing trace with hash -335548120, now seen corresponding path program 33 times [2022-03-15 14:00:35,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:35,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601574069] [2022-03-15 14:00:35,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:35,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:35,284 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:35,284 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601574069] [2022-03-15 14:00:35,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601574069] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:35,285 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:35,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:00:35,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612427956] [2022-03-15 14:00:35,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:35,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:00:35,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:35,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:00:35,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:00:35,285 INFO L87 Difference]: Start difference. First operand 15770 states and 45266 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:35,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:35,705 INFO L93 Difference]: Finished difference Result 27452 states and 78694 transitions. [2022-03-15 14:00:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 14:00:35,705 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:35,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:35,756 INFO L225 Difference]: With dead ends: 27452 [2022-03-15 14:00:35,757 INFO L226 Difference]: Without dead ends: 27452 [2022-03-15 14:00:35,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 14:00:35,757 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 1175 mSDsluCounter, 2402 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 2730 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:35,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 2730 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:00:35,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27452 states. [2022-03-15 14:00:36,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27452 to 15778. [2022-03-15 14:00:36,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15778 states, 15777 states have (on average 2.8689864993344742) internal successors, (45264), 15777 states have internal predecessors, (45264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15778 states to 15778 states and 45264 transitions. [2022-03-15 14:00:36,061 INFO L78 Accepts]: Start accepts. Automaton has 15778 states and 45264 transitions. Word has length 177 [2022-03-15 14:00:36,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:36,061 INFO L470 AbstractCegarLoop]: Abstraction has 15778 states and 45264 transitions. [2022-03-15 14:00:36,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:36,061 INFO L276 IsEmpty]: Start isEmpty. Operand 15778 states and 45264 transitions. [2022-03-15 14:00:36,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:36,083 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:36,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:36,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-03-15 14:00:36,083 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:36,084 INFO L85 PathProgramCache]: Analyzing trace with hash -827001996, now seen corresponding path program 36 times [2022-03-15 14:00:36,084 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:36,084 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925375106] [2022-03-15 14:00:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:36,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:36,324 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:36,324 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925375106] [2022-03-15 14:00:36,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925375106] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:36,324 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:36,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:00:36,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325503751] [2022-03-15 14:00:36,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:36,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:00:36,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:36,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:00:36,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:00:36,324 INFO L87 Difference]: Start difference. First operand 15778 states and 45264 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:36,868 INFO L93 Difference]: Finished difference Result 27218 states and 77998 transitions. [2022-03-15 14:00:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 14:00:36,868 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:36,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:36,919 INFO L225 Difference]: With dead ends: 27218 [2022-03-15 14:00:36,920 INFO L226 Difference]: Without dead ends: 27218 [2022-03-15 14:00:36,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=436, Invalid=1286, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:00:36,920 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 1078 mSDsluCounter, 3116 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 3454 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:36,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1078 Valid, 3454 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:00:36,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27218 states. [2022-03-15 14:00:37,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27218 to 15842. [2022-03-15 14:00:37,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15842 states, 15841 states have (on average 2.8685057761504957) internal successors, (45440), 15841 states have internal predecessors, (45440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:37,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15842 states to 15842 states and 45440 transitions. [2022-03-15 14:00:37,232 INFO L78 Accepts]: Start accepts. Automaton has 15842 states and 45440 transitions. Word has length 177 [2022-03-15 14:00:37,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:37,232 INFO L470 AbstractCegarLoop]: Abstraction has 15842 states and 45440 transitions. [2022-03-15 14:00:37,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:37,232 INFO L276 IsEmpty]: Start isEmpty. Operand 15842 states and 45440 transitions. [2022-03-15 14:00:37,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:37,254 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:37,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:37,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-03-15 14:00:37,254 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:37,255 INFO L85 PathProgramCache]: Analyzing trace with hash 415868256, now seen corresponding path program 37 times [2022-03-15 14:00:37,255 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:37,255 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274522618] [2022-03-15 14:00:37,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:37,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:37,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:37,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274522618] [2022-03-15 14:00:37,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274522618] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:00:37,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444683050] [2022-03-15 14:00:37,479 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:00:37,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:00:37,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:00:37,480 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:00:37,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-15 14:00:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:37,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-15 14:00:37,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:00:37,674 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:00:37,789 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-03-15 14:00:37,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-03-15 14:00:37,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:00:38,070 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-03-15 14:00:38,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-03-15 14:00:38,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:00:38,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:00:38,250 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:00:38,410 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-15 14:00:38,410 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 14:00:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:00:38,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:00:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:38,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444683050] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:00:38,699 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:00:38,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-03-15 14:00:38,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911109392] [2022-03-15 14:00:38,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:00:38,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-15 14:00:38,700 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:38,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-15 14:00:38,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:00:38,700 INFO L87 Difference]: Start difference. First operand 15842 states and 45440 transitions. Second operand has 49 states, 49 states have (on average 7.795918367346939) internal successors, (382), 49 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:41,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:41,489 INFO L93 Difference]: Finished difference Result 31870 states and 91170 transitions. [2022-03-15 14:00:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:00:41,490 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 7.795918367346939) internal successors, (382), 49 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:41,559 INFO L225 Difference]: With dead ends: 31870 [2022-03-15 14:00:41,559 INFO L226 Difference]: Without dead ends: 31870 [2022-03-15 14:00:41,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1719 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1655, Invalid=6717, Unknown=0, NotChecked=0, Total=8372 [2022-03-15 14:00:41,560 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 3492 mSDsluCounter, 7336 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3492 SdHoareTripleChecker+Valid, 7633 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 442 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:41,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3492 Valid, 7633 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1983 Invalid, 0 Unknown, 442 Unchecked, 0.8s Time] [2022-03-15 14:00:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31870 states. [2022-03-15 14:00:41,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31870 to 15286. [2022-03-15 14:00:41,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15286 states, 15285 states have (on average 2.8692181877657834) internal successors, (43856), 15285 states have internal predecessors, (43856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15286 states to 15286 states and 43856 transitions. [2022-03-15 14:00:41,935 INFO L78 Accepts]: Start accepts. Automaton has 15286 states and 43856 transitions. Word has length 177 [2022-03-15 14:00:41,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:41,935 INFO L470 AbstractCegarLoop]: Abstraction has 15286 states and 43856 transitions. [2022-03-15 14:00:41,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.795918367346939) internal successors, (382), 49 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:41,935 INFO L276 IsEmpty]: Start isEmpty. Operand 15286 states and 43856 transitions. [2022-03-15 14:00:41,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:41,956 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:41,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:41,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-15 14:00:42,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable205 [2022-03-15 14:00:42,174 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:42,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:42,174 INFO L85 PathProgramCache]: Analyzing trace with hash 462627316, now seen corresponding path program 44 times [2022-03-15 14:00:42,174 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:42,174 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674788287] [2022-03-15 14:00:42,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:42,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:42,538 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:42,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674788287] [2022-03-15 14:00:42,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674788287] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:42,538 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:42,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:00:42,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516750172] [2022-03-15 14:00:42,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:42,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:00:42,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:42,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:00:42,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:00:42,539 INFO L87 Difference]: Start difference. First operand 15286 states and 43856 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:43,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:43,106 INFO L93 Difference]: Finished difference Result 27222 states and 78126 transitions. [2022-03-15 14:00:43,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 14:00:43,106 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:43,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:43,158 INFO L225 Difference]: With dead ends: 27222 [2022-03-15 14:00:43,158 INFO L226 Difference]: Without dead ends: 27222 [2022-03-15 14:00:43,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:00:43,159 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 938 mSDsluCounter, 3660 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 3960 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:43,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 3960 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:00:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27222 states. [2022-03-15 14:00:43,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27222 to 15262. [2022-03-15 14:00:43,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15262 states, 15261 states have (on average 2.8694056745953738) internal successors, (43790), 15261 states have internal predecessors, (43790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15262 states to 15262 states and 43790 transitions. [2022-03-15 14:00:43,451 INFO L78 Accepts]: Start accepts. Automaton has 15262 states and 43790 transitions. Word has length 177 [2022-03-15 14:00:43,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:43,452 INFO L470 AbstractCegarLoop]: Abstraction has 15262 states and 43790 transitions. [2022-03-15 14:00:43,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 15262 states and 43790 transitions. [2022-03-15 14:00:43,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:43,473 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:43,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:43,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-03-15 14:00:43,473 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:43,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:43,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2110797828, now seen corresponding path program 38 times [2022-03-15 14:00:43,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:43,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038634267] [2022-03-15 14:00:43,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:43,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:43,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:43,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038634267] [2022-03-15 14:00:43,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038634267] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:43,804 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:43,804 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:00:43,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622756323] [2022-03-15 14:00:43,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:43,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:00:43,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:43,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:00:43,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:00:43,804 INFO L87 Difference]: Start difference. First operand 15262 states and 43790 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:44,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:44,522 INFO L93 Difference]: Finished difference Result 26934 states and 77242 transitions. [2022-03-15 14:00:44,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 14:00:44,522 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:44,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:44,578 INFO L225 Difference]: With dead ends: 26934 [2022-03-15 14:00:44,578 INFO L226 Difference]: Without dead ends: 26934 [2022-03-15 14:00:44,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 14:00:44,579 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1003 mSDsluCounter, 2486 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:44,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 2799 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:00:44,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26934 states. [2022-03-15 14:00:44,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26934 to 15294. [2022-03-15 14:00:44,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15294 states, 15293 states have (on average 2.8691558229255216) internal successors, (43878), 15293 states have internal predecessors, (43878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:44,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15294 states to 15294 states and 43878 transitions. [2022-03-15 14:00:44,898 INFO L78 Accepts]: Start accepts. Automaton has 15294 states and 43878 transitions. Word has length 177 [2022-03-15 14:00:44,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:44,899 INFO L470 AbstractCegarLoop]: Abstraction has 15294 states and 43878 transitions. [2022-03-15 14:00:44,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:44,899 INFO L276 IsEmpty]: Start isEmpty. Operand 15294 states and 43878 transitions. [2022-03-15 14:00:44,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:44,921 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:44,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:44,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-03-15 14:00:44,921 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:44,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:44,921 INFO L85 PathProgramCache]: Analyzing trace with hash -867927576, now seen corresponding path program 39 times [2022-03-15 14:00:44,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:44,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170171181] [2022-03-15 14:00:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:44,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:45,297 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:45,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170171181] [2022-03-15 14:00:45,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170171181] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:00:45,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944829957] [2022-03-15 14:00:45,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:00:45,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:00:45,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:00:45,299 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:00:45,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-15 14:00:45,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 14:00:45,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:00:45,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-15 14:00:45,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:00:45,871 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:00:45,968 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:00:45,997 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:00:46,210 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-15 14:00:46,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 14:00:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:00:46,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:00:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:46,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944829957] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:00:46,618 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:00:46,618 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 9] total 42 [2022-03-15 14:00:46,618 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843710277] [2022-03-15 14:00:46,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:00:46,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:00:46,618 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:46,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:00:46,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1530, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:00:46,619 INFO L87 Difference]: Start difference. First operand 15294 states and 43878 transitions. Second operand has 42 states, 42 states have (on average 9.023809523809524) internal successors, (379), 42 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:50,922 INFO L93 Difference]: Finished difference Result 43945 states and 124843 transitions. [2022-03-15 14:00:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 14:00:50,923 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 9.023809523809524) internal successors, (379), 42 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:50,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:51,011 INFO L225 Difference]: With dead ends: 43945 [2022-03-15 14:00:51,011 INFO L226 Difference]: Without dead ends: 43945 [2022-03-15 14:00:51,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 2314 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2153, Invalid=7745, Unknown=2, NotChecked=0, Total=9900 [2022-03-15 14:00:51,012 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 2541 mSDsluCounter, 9463 mSDsCounter, 0 mSdLazyCounter, 2658 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2541 SdHoareTripleChecker+Valid, 9722 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 489 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:51,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2541 Valid, 9722 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2658 Invalid, 0 Unknown, 489 Unchecked, 0.9s Time] [2022-03-15 14:00:51,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43945 states. [2022-03-15 14:00:51,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43945 to 15298. [2022-03-15 14:00:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15298 states, 15297 states have (on average 2.8674903575864548) internal successors, (43864), 15297 states have internal predecessors, (43864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15298 states to 15298 states and 43864 transitions. [2022-03-15 14:00:51,436 INFO L78 Accepts]: Start accepts. Automaton has 15298 states and 43864 transitions. Word has length 177 [2022-03-15 14:00:51,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:51,436 INFO L470 AbstractCegarLoop]: Abstraction has 15298 states and 43864 transitions. [2022-03-15 14:00:51,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 9.023809523809524) internal successors, (379), 42 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:51,436 INFO L276 IsEmpty]: Start isEmpty. Operand 15298 states and 43864 transitions. [2022-03-15 14:00:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:51,457 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:51,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:51,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-15 14:00:51,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:00:51,674 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:51,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:51,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1993797414, now seen corresponding path program 45 times [2022-03-15 14:00:51,675 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:51,675 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071855576] [2022-03-15 14:00:51,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:51,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:51,924 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:51,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071855576] [2022-03-15 14:00:51,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071855576] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:51,925 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:51,925 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:00:51,925 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213902748] [2022-03-15 14:00:51,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:51,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:00:51,925 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:51,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:00:51,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:00:51,925 INFO L87 Difference]: Start difference. First operand 15298 states and 43864 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:52,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:52,374 INFO L93 Difference]: Finished difference Result 26966 states and 77290 transitions. [2022-03-15 14:00:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 14:00:52,374 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:52,426 INFO L225 Difference]: With dead ends: 26966 [2022-03-15 14:00:52,426 INFO L226 Difference]: Without dead ends: 26966 [2022-03-15 14:00:52,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 14:00:52,427 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 791 mSDsluCounter, 2495 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:52,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 2808 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:00:52,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26966 states. [2022-03-15 14:00:52,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26966 to 15314. [2022-03-15 14:00:52,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15314 states, 15313 states have (on average 2.868412460001306) internal successors, (43924), 15313 states have internal predecessors, (43924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:52,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15314 states to 15314 states and 43924 transitions. [2022-03-15 14:00:52,728 INFO L78 Accepts]: Start accepts. Automaton has 15314 states and 43924 transitions. Word has length 177 [2022-03-15 14:00:52,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:52,728 INFO L470 AbstractCegarLoop]: Abstraction has 15314 states and 43924 transitions. [2022-03-15 14:00:52,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:52,728 INFO L276 IsEmpty]: Start isEmpty. Operand 15314 states and 43924 transitions. [2022-03-15 14:00:52,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:52,749 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:52,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:52,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-03-15 14:00:52,749 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:52,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:52,749 INFO L85 PathProgramCache]: Analyzing trace with hash 774256320, now seen corresponding path program 40 times [2022-03-15 14:00:52,750 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:52,750 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596165906] [2022-03-15 14:00:52,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:52,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:52,980 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:52,980 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596165906] [2022-03-15 14:00:52,981 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596165906] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:52,981 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:52,981 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:00:52,981 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080593817] [2022-03-15 14:00:52,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:52,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:00:52,981 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:52,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:00:52,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:00:52,981 INFO L87 Difference]: Start difference. First operand 15314 states and 43924 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:53,504 INFO L93 Difference]: Finished difference Result 26922 states and 77176 transitions. [2022-03-15 14:00:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 14:00:53,504 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:53,557 INFO L225 Difference]: With dead ends: 26922 [2022-03-15 14:00:53,557 INFO L226 Difference]: Without dead ends: 26922 [2022-03-15 14:00:53,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:00:53,558 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1105 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:53,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 2574 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:00:53,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26922 states. [2022-03-15 14:00:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26922 to 15322. [2022-03-15 14:00:53,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15322 states, 15321 states have (on average 2.868350629854448) internal successors, (43946), 15321 states have internal predecessors, (43946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:53,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15322 states to 15322 states and 43946 transitions. [2022-03-15 14:00:53,862 INFO L78 Accepts]: Start accepts. Automaton has 15322 states and 43946 transitions. Word has length 177 [2022-03-15 14:00:53,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:53,862 INFO L470 AbstractCegarLoop]: Abstraction has 15322 states and 43946 transitions. [2022-03-15 14:00:53,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:53,862 INFO L276 IsEmpty]: Start isEmpty. Operand 15322 states and 43946 transitions. [2022-03-15 14:00:53,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:53,884 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:53,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:53,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-03-15 14:00:53,884 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:53,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:53,884 INFO L85 PathProgramCache]: Analyzing trace with hash 975805210, now seen corresponding path program 62 times [2022-03-15 14:00:53,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:53,885 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201975867] [2022-03-15 14:00:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:53,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:54,224 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:54,225 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201975867] [2022-03-15 14:00:54,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201975867] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:54,225 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:54,225 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:00:54,225 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971620311] [2022-03-15 14:00:54,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:54,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:00:54,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:00:54,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:00:54,225 INFO L87 Difference]: Start difference. First operand 15322 states and 43946 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:54,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:54,716 INFO L93 Difference]: Finished difference Result 27228 states and 78054 transitions. [2022-03-15 14:00:54,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:00:54,717 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:54,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:54,771 INFO L225 Difference]: With dead ends: 27228 [2022-03-15 14:00:54,772 INFO L226 Difference]: Without dead ends: 27228 [2022-03-15 14:00:54,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=336, Invalid=1070, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:00:54,772 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 956 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:54,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [956 Valid, 3152 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:00:54,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27228 states. [2022-03-15 14:00:55,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27228 to 15314. [2022-03-15 14:00:55,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15314 states, 15313 states have (on average 2.868412460001306) internal successors, (43924), 15313 states have internal predecessors, (43924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:55,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15314 states to 15314 states and 43924 transitions. [2022-03-15 14:00:55,079 INFO L78 Accepts]: Start accepts. Automaton has 15314 states and 43924 transitions. Word has length 177 [2022-03-15 14:00:55,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:55,079 INFO L470 AbstractCegarLoop]: Abstraction has 15314 states and 43924 transitions. [2022-03-15 14:00:55,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:55,080 INFO L276 IsEmpty]: Start isEmpty. Operand 15314 states and 43924 transitions. [2022-03-15 14:00:55,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:55,101 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:55,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:55,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-03-15 14:00:55,101 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:55,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:55,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1439379952, now seen corresponding path program 34 times [2022-03-15 14:00:55,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:55,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968456070] [2022-03-15 14:00:55,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:55,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:55,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:55,351 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:55,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968456070] [2022-03-15 14:00:55,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968456070] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:55,351 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:55,351 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:00:55,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417710997] [2022-03-15 14:00:55,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:55,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:00:55,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:55,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:00:55,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:00:55,352 INFO L87 Difference]: Start difference. First operand 15314 states and 43924 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:55,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:55,796 INFO L93 Difference]: Finished difference Result 27124 states and 77760 transitions. [2022-03-15 14:00:55,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:00:55,797 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:55,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:55,847 INFO L225 Difference]: With dead ends: 27124 [2022-03-15 14:00:55,847 INFO L226 Difference]: Without dead ends: 27124 [2022-03-15 14:00:55,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:00:55,848 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 859 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 3103 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:55,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 3103 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:00:55,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27124 states. [2022-03-15 14:00:56,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27124 to 15290. [2022-03-15 14:00:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15290 states, 15289 states have (on average 2.8670285826411144) internal successors, (43834), 15289 states have internal predecessors, (43834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:56,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15290 states to 15290 states and 43834 transitions. [2022-03-15 14:00:56,145 INFO L78 Accepts]: Start accepts. Automaton has 15290 states and 43834 transitions. Word has length 177 [2022-03-15 14:00:56,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:56,145 INFO L470 AbstractCegarLoop]: Abstraction has 15290 states and 43834 transitions. [2022-03-15 14:00:56,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:56,145 INFO L276 IsEmpty]: Start isEmpty. Operand 15290 states and 43834 transitions. [2022-03-15 14:00:56,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:56,166 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:56,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:56,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-03-15 14:00:56,166 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:56,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:56,166 INFO L85 PathProgramCache]: Analyzing trace with hash 625248650, now seen corresponding path program 46 times [2022-03-15 14:00:56,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:56,166 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123201091] [2022-03-15 14:00:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:56,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:56,547 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:56,547 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123201091] [2022-03-15 14:00:56,547 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123201091] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:56,547 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:56,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:00:56,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441759615] [2022-03-15 14:00:56,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:56,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:00:56,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:56,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:00:56,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:00:56,548 INFO L87 Difference]: Start difference. First operand 15290 states and 43834 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:57,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:57,245 INFO L93 Difference]: Finished difference Result 26806 states and 76778 transitions. [2022-03-15 14:00:57,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:00:57,245 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:57,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:57,295 INFO L225 Difference]: With dead ends: 26806 [2022-03-15 14:00:57,296 INFO L226 Difference]: Without dead ends: 26806 [2022-03-15 14:00:57,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:00:57,296 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 997 mSDsluCounter, 2513 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:57,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 2824 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:00:57,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26806 states. [2022-03-15 14:00:57,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26806 to 15282. [2022-03-15 14:00:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15282 states, 15281 states have (on average 2.865519272298933) internal successors, (43788), 15281 states have internal predecessors, (43788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:57,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15282 states to 15282 states and 43788 transitions. [2022-03-15 14:00:57,599 INFO L78 Accepts]: Start accepts. Automaton has 15282 states and 43788 transitions. Word has length 177 [2022-03-15 14:00:57,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:57,599 INFO L470 AbstractCegarLoop]: Abstraction has 15282 states and 43788 transitions. [2022-03-15 14:00:57,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:57,599 INFO L276 IsEmpty]: Start isEmpty. Operand 15282 states and 43788 transitions. [2022-03-15 14:00:57,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:57,621 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:57,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:57,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-03-15 14:00:57,621 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:57,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:57,621 INFO L85 PathProgramCache]: Analyzing trace with hash -901664912, now seen corresponding path program 41 times [2022-03-15 14:00:57,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:57,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319186368] [2022-03-15 14:00:57,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:57,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:57,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:57,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:57,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319186368] [2022-03-15 14:00:57,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319186368] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:57,955 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:57,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:00:57,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021335668] [2022-03-15 14:00:57,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:57,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:00:57,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:57,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:00:57,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:00:57,956 INFO L87 Difference]: Start difference. First operand 15282 states and 43788 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:58,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:00:58,639 INFO L93 Difference]: Finished difference Result 26770 states and 76686 transitions. [2022-03-15 14:00:58,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:00:58,639 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:00:58,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:00:58,696 INFO L225 Difference]: With dead ends: 26770 [2022-03-15 14:00:58,697 INFO L226 Difference]: Without dead ends: 26770 [2022-03-15 14:00:58,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:00:58,697 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 848 mSDsluCounter, 2644 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:00:58,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [848 Valid, 2950 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:00:58,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26770 states. [2022-03-15 14:00:58,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26770 to 15298. [2022-03-15 14:00:58,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15298 states, 15297 states have (on average 2.8653984441393736) internal successors, (43832), 15297 states have internal predecessors, (43832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15298 states to 15298 states and 43832 transitions. [2022-03-15 14:00:59,020 INFO L78 Accepts]: Start accepts. Automaton has 15298 states and 43832 transitions. Word has length 177 [2022-03-15 14:00:59,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:00:59,020 INFO L470 AbstractCegarLoop]: Abstraction has 15298 states and 43832 transitions. [2022-03-15 14:00:59,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:00:59,020 INFO L276 IsEmpty]: Start isEmpty. Operand 15298 states and 43832 transitions. [2022-03-15 14:00:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:00:59,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:00:59,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:00:59,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-03-15 14:00:59,044 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:00:59,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:00:59,044 INFO L85 PathProgramCache]: Analyzing trace with hash -700116022, now seen corresponding path program 63 times [2022-03-15 14:00:59,044 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:00:59,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776151417] [2022-03-15 14:00:59,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:00:59,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:00:59,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:00:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:00:59,402 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:00:59,402 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776151417] [2022-03-15 14:00:59,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776151417] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:00:59,402 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:00:59,402 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:00:59,402 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882034588] [2022-03-15 14:00:59,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:00:59,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:00:59,402 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:00:59,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:00:59,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:00:59,403 INFO L87 Difference]: Start difference. First operand 15298 states and 43832 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:00,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:00,105 INFO L93 Difference]: Finished difference Result 27092 states and 77608 transitions. [2022-03-15 14:01:00,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:01:00,105 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:00,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:00,161 INFO L225 Difference]: With dead ends: 27092 [2022-03-15 14:01:00,161 INFO L226 Difference]: Without dead ends: 27092 [2022-03-15 14:01:00,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:01:00,162 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 897 mSDsluCounter, 3303 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:00,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 3611 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:01:00,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27092 states. [2022-03-15 14:01:00,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27092 to 15298. [2022-03-15 14:01:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15298 states, 15297 states have (on average 2.8653984441393736) internal successors, (43832), 15297 states have internal predecessors, (43832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15298 states to 15298 states and 43832 transitions. [2022-03-15 14:01:00,484 INFO L78 Accepts]: Start accepts. Automaton has 15298 states and 43832 transitions. Word has length 177 [2022-03-15 14:01:00,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:00,484 INFO L470 AbstractCegarLoop]: Abstraction has 15298 states and 43832 transitions. [2022-03-15 14:01:00,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:00,485 INFO L276 IsEmpty]: Start isEmpty. Operand 15298 states and 43832 transitions. [2022-03-15 14:01:00,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:00,507 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:00,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:00,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-03-15 14:01:00,507 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:00,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:00,507 INFO L85 PathProgramCache]: Analyzing trace with hash -236541280, now seen corresponding path program 35 times [2022-03-15 14:01:00,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:00,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280721066] [2022-03-15 14:01:00,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:00,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:00,777 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:00,777 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280721066] [2022-03-15 14:01:00,777 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280721066] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:00,777 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:00,777 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:00,777 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057199067] [2022-03-15 14:01:00,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:00,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:00,778 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:00,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:00,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:00,778 INFO L87 Difference]: Start difference. First operand 15298 states and 43832 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:01,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:01,332 INFO L93 Difference]: Finished difference Result 26996 states and 77336 transitions. [2022-03-15 14:01:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:01:01,333 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:01,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:01,387 INFO L225 Difference]: With dead ends: 26996 [2022-03-15 14:01:01,387 INFO L226 Difference]: Without dead ends: 26996 [2022-03-15 14:01:01,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=328, Invalid=1004, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:01:01,388 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 1317 mSDsluCounter, 2484 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:01,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 2794 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:01:01,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26996 states. [2022-03-15 14:01:01,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26996 to 15290. [2022-03-15 14:01:01,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15290 states, 15289 states have (on average 2.864412322584865) internal successors, (43794), 15289 states have internal predecessors, (43794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:01,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15290 states to 15290 states and 43794 transitions. [2022-03-15 14:01:01,710 INFO L78 Accepts]: Start accepts. Automaton has 15290 states and 43794 transitions. Word has length 177 [2022-03-15 14:01:01,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:01,710 INFO L470 AbstractCegarLoop]: Abstraction has 15290 states and 43794 transitions. [2022-03-15 14:01:01,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:01,710 INFO L276 IsEmpty]: Start isEmpty. Operand 15290 states and 43794 transitions. [2022-03-15 14:01:01,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:01,731 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:01,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:01,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-03-15 14:01:01,732 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:01,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:01,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1960172420, now seen corresponding path program 64 times [2022-03-15 14:01:01,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:01,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798819651] [2022-03-15 14:01:01,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:01,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:02,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:02,013 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:02,013 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798819651] [2022-03-15 14:01:02,013 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798819651] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:02,013 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:02,013 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:01:02,014 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481599216] [2022-03-15 14:01:02,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:02,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:01:02,014 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:02,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:01:02,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:01:02,014 INFO L87 Difference]: Start difference. First operand 15290 states and 43794 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:02,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:02,521 INFO L93 Difference]: Finished difference Result 27428 states and 78540 transitions. [2022-03-15 14:01:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 14:01:02,521 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:02,573 INFO L225 Difference]: With dead ends: 27428 [2022-03-15 14:01:02,574 INFO L226 Difference]: Without dead ends: 27428 [2022-03-15 14:01:02,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=1182, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 14:01:02,574 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 1279 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:02,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 3398 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:01:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27428 states. [2022-03-15 14:01:02,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27428 to 15274. [2022-03-15 14:01:02,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15274 states, 15273 states have (on average 2.864532180972959) internal successors, (43750), 15273 states have internal predecessors, (43750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15274 states to 15274 states and 43750 transitions. [2022-03-15 14:01:02,886 INFO L78 Accepts]: Start accepts. Automaton has 15274 states and 43750 transitions. Word has length 177 [2022-03-15 14:01:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:02,887 INFO L470 AbstractCegarLoop]: Abstraction has 15274 states and 43750 transitions. [2022-03-15 14:01:02,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 15274 states and 43750 transitions. [2022-03-15 14:01:02,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:02,910 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:02,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:02,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-03-15 14:01:02,911 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:02,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:02,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2039912484, now seen corresponding path program 36 times [2022-03-15 14:01:02,911 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:02,911 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530103359] [2022-03-15 14:01:02,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:02,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:03,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:03,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530103359] [2022-03-15 14:01:03,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530103359] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:03,184 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:03,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:03,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502743159] [2022-03-15 14:01:03,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:03,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:03,185 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:03,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:03,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:03,185 INFO L87 Difference]: Start difference. First operand 15274 states and 43750 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:03,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:03,794 INFO L93 Difference]: Finished difference Result 26836 states and 76856 transitions. [2022-03-15 14:01:03,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 14:01:03,795 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:03,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:03,848 INFO L225 Difference]: With dead ends: 26836 [2022-03-15 14:01:03,848 INFO L226 Difference]: Without dead ends: 26836 [2022-03-15 14:01:03,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=370, Invalid=1112, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 14:01:03,848 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 912 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:03,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [912 Valid, 2977 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:01:03,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26836 states. [2022-03-15 14:01:04,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26836 to 15290. [2022-03-15 14:01:04,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15290 states, 15289 states have (on average 2.864412322584865) internal successors, (43794), 15289 states have internal predecessors, (43794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:04,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15290 states to 15290 states and 43794 transitions. [2022-03-15 14:01:04,181 INFO L78 Accepts]: Start accepts. Automaton has 15290 states and 43794 transitions. Word has length 177 [2022-03-15 14:01:04,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:04,181 INFO L470 AbstractCegarLoop]: Abstraction has 15290 states and 43794 transitions. [2022-03-15 14:01:04,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:04,181 INFO L276 IsEmpty]: Start isEmpty. Operand 15290 states and 43794 transitions. [2022-03-15 14:01:04,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:04,203 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:04,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:04,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-03-15 14:01:04,204 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:04,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:04,204 INFO L85 PathProgramCache]: Analyzing trace with hash 160691390, now seen corresponding path program 37 times [2022-03-15 14:01:04,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:04,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165036464] [2022-03-15 14:01:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:04,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:04,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:04,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:04,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165036464] [2022-03-15 14:01:04,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165036464] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:04,473 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:04,473 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:04,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197720249] [2022-03-15 14:01:04,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:04,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:04,473 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:04,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:04,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:04,474 INFO L87 Difference]: Start difference. First operand 15290 states and 43794 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:05,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:05,261 INFO L93 Difference]: Finished difference Result 26188 states and 74786 transitions. [2022-03-15 14:01:05,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 14:01:05,262 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:05,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:05,319 INFO L225 Difference]: With dead ends: 26188 [2022-03-15 14:01:05,319 INFO L226 Difference]: Without dead ends: 26188 [2022-03-15 14:01:05,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:01:05,320 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 1020 mSDsluCounter, 3247 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:05,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 3581 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:01:05,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26188 states. [2022-03-15 14:01:05,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26188 to 13682. [2022-03-15 14:01:05,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13682 states, 13681 states have (on average 2.8492069293180324) internal successors, (38980), 13681 states have internal predecessors, (38980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:05,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13682 states to 13682 states and 38980 transitions. [2022-03-15 14:01:05,629 INFO L78 Accepts]: Start accepts. Automaton has 13682 states and 38980 transitions. Word has length 177 [2022-03-15 14:01:05,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:05,629 INFO L470 AbstractCegarLoop]: Abstraction has 13682 states and 38980 transitions. [2022-03-15 14:01:05,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:05,629 INFO L276 IsEmpty]: Start isEmpty. Operand 13682 states and 38980 transitions. [2022-03-15 14:01:05,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:05,650 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:05,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:05,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-03-15 14:01:05,650 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:05,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:05,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1092416362, now seen corresponding path program 65 times [2022-03-15 14:01:05,650 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:05,650 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798320036] [2022-03-15 14:01:05,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:05,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:05,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:05,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798320036] [2022-03-15 14:01:05,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798320036] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:05,951 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:05,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:05,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547187792] [2022-03-15 14:01:05,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:05,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:05,951 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:05,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:05,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:05,951 INFO L87 Difference]: Start difference. First operand 13682 states and 38980 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:06,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:06,696 INFO L93 Difference]: Finished difference Result 24140 states and 69158 transitions. [2022-03-15 14:01:06,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 14:01:06,697 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:06,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:06,743 INFO L225 Difference]: With dead ends: 24140 [2022-03-15 14:01:06,743 INFO L226 Difference]: Without dead ends: 24140 [2022-03-15 14:01:06,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:01:06,744 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 1445 mSDsluCounter, 3036 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:06,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1445 Valid, 3384 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:01:06,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24140 states. [2022-03-15 14:01:07,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24140 to 13698. [2022-03-15 14:01:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13698 states, 13697 states have (on average 2.8502591808425204) internal successors, (39040), 13697 states have internal predecessors, (39040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:07,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13698 states to 13698 states and 39040 transitions. [2022-03-15 14:01:07,054 INFO L78 Accepts]: Start accepts. Automaton has 13698 states and 39040 transitions. Word has length 177 [2022-03-15 14:01:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:07,054 INFO L470 AbstractCegarLoop]: Abstraction has 13698 states and 39040 transitions. [2022-03-15 14:01:07,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 13698 states and 39040 transitions. [2022-03-15 14:01:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:07,074 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:07,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:07,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-03-15 14:01:07,075 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:07,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:07,075 INFO L85 PathProgramCache]: Analyzing trace with hash 2001586854, now seen corresponding path program 47 times [2022-03-15 14:01:07,075 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:07,075 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028706585] [2022-03-15 14:01:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:07,402 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:07,403 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:07,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028706585] [2022-03-15 14:01:07,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028706585] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:01:07,403 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953452504] [2022-03-15 14:01:07,403 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:01:07,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:01:07,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:01:07,408 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:01:07,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-15 14:01:07,654 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:01:07,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:01:07,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-15 14:01:07,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:01:07,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:07,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:01:08,339 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:01:08,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:01:08,519 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:01:08,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:08,913 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:09,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 14:01:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:09,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:01:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:09,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953452504] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:01:09,785 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:01:09,785 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-03-15 14:01:09,786 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896440936] [2022-03-15 14:01:09,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:01:09,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-15 14:01:09,786 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:09,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-15 14:01:09,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2119, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:01:09,787 INFO L87 Difference]: Start difference. First operand 13698 states and 39040 transitions. Second operand has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:16,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:16,296 INFO L93 Difference]: Finished difference Result 38883 states and 112074 transitions. [2022-03-15 14:01:16,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 14:01:16,299 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:16,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:16,372 INFO L225 Difference]: With dead ends: 38883 [2022-03-15 14:01:16,372 INFO L226 Difference]: Without dead ends: 38883 [2022-03-15 14:01:16,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2727 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2303, Invalid=9039, Unknown=0, NotChecked=0, Total=11342 [2022-03-15 14:01:16,373 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 2968 mSDsluCounter, 8751 mSDsCounter, 0 mSdLazyCounter, 3015 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2968 SdHoareTripleChecker+Valid, 8985 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:16,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2968 Valid, 8985 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3015 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 14:01:16,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38883 states. [2022-03-15 14:01:16,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38883 to 13698. [2022-03-15 14:01:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13698 states, 13697 states have (on average 2.8502591808425204) internal successors, (39040), 13697 states have internal predecessors, (39040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13698 states to 13698 states and 39040 transitions. [2022-03-15 14:01:16,725 INFO L78 Accepts]: Start accepts. Automaton has 13698 states and 39040 transitions. Word has length 177 [2022-03-15 14:01:16,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:16,725 INFO L470 AbstractCegarLoop]: Abstraction has 13698 states and 39040 transitions. [2022-03-15 14:01:16,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:16,726 INFO L276 IsEmpty]: Start isEmpty. Operand 13698 states and 39040 transitions. [2022-03-15 14:01:16,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:16,745 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:16,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:16,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-15 14:01:16,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2022-03-15 14:01:16,963 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:16,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1688917108, now seen corresponding path program 48 times [2022-03-15 14:01:16,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:16,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910272883] [2022-03-15 14:01:16,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:16,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:17,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:17,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910272883] [2022-03-15 14:01:17,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910272883] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:17,279 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:17,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:01:17,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38148374] [2022-03-15 14:01:17,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:17,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:01:17,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:17,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:01:17,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:01:17,280 INFO L87 Difference]: Start difference. First operand 13698 states and 39040 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:17,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:17,906 INFO L93 Difference]: Finished difference Result 20455 states and 58657 transitions. [2022-03-15 14:01:17,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:01:17,906 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:17,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:17,943 INFO L225 Difference]: With dead ends: 20455 [2022-03-15 14:01:17,943 INFO L226 Difference]: Without dead ends: 20455 [2022-03-15 14:01:17,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:01:17,944 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 901 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:17,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 2574 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:01:17,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20455 states. [2022-03-15 14:01:18,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20455 to 13730. [2022-03-15 14:01:18,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13730 states, 13729 states have (on average 2.85177361788914) internal successors, (39152), 13729 states have internal predecessors, (39152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13730 states to 13730 states and 39152 transitions. [2022-03-15 14:01:18,210 INFO L78 Accepts]: Start accepts. Automaton has 13730 states and 39152 transitions. Word has length 177 [2022-03-15 14:01:18,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:18,210 INFO L470 AbstractCegarLoop]: Abstraction has 13730 states and 39152 transitions. [2022-03-15 14:01:18,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:18,210 INFO L276 IsEmpty]: Start isEmpty. Operand 13730 states and 39152 transitions. [2022-03-15 14:01:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:18,230 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:18,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:18,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-03-15 14:01:18,230 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:18,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:18,230 INFO L85 PathProgramCache]: Analyzing trace with hash 162003546, now seen corresponding path program 42 times [2022-03-15 14:01:18,230 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:18,230 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88107759] [2022-03-15 14:01:18,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:18,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:18,581 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:18,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88107759] [2022-03-15 14:01:18,581 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88107759] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:18,581 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:18,581 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:18,581 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984625769] [2022-03-15 14:01:18,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:18,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:18,581 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:18,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:18,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:18,582 INFO L87 Difference]: Start difference. First operand 13730 states and 39152 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:19,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:19,114 INFO L93 Difference]: Finished difference Result 20551 states and 58921 transitions. [2022-03-15 14:01:19,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:01:19,115 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:19,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:19,155 INFO L225 Difference]: With dead ends: 20551 [2022-03-15 14:01:19,156 INFO L226 Difference]: Without dead ends: 20551 [2022-03-15 14:01:19,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:01:19,156 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1181 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:19,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 2653 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:01:19,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20551 states. [2022-03-15 14:01:19,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20551 to 13746. [2022-03-15 14:01:19,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13746 states, 13745 states have (on average 2.8516551473263005) internal successors, (39196), 13745 states have internal predecessors, (39196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:19,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13746 states to 13746 states and 39196 transitions. [2022-03-15 14:01:19,426 INFO L78 Accepts]: Start accepts. Automaton has 13746 states and 39196 transitions. Word has length 177 [2022-03-15 14:01:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:19,426 INFO L470 AbstractCegarLoop]: Abstraction has 13746 states and 39196 transitions. [2022-03-15 14:01:19,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:19,426 INFO L276 IsEmpty]: Start isEmpty. Operand 13746 states and 39196 transitions. [2022-03-15 14:01:19,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:19,447 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:19,447 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:19,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-03-15 14:01:19,447 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:19,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:19,447 INFO L85 PathProgramCache]: Analyzing trace with hash 363552436, now seen corresponding path program 66 times [2022-03-15 14:01:19,447 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:19,447 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870200397] [2022-03-15 14:01:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:19,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:19,677 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:19,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870200397] [2022-03-15 14:01:19,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870200397] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:19,677 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:19,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:01:19,677 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89774993] [2022-03-15 14:01:19,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:19,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:01:19,677 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:19,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:01:19,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:01:19,685 INFO L87 Difference]: Start difference. First operand 13746 states and 39196 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:20,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:20,170 INFO L93 Difference]: Finished difference Result 20833 states and 59717 transitions. [2022-03-15 14:01:20,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:01:20,170 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:20,210 INFO L225 Difference]: With dead ends: 20833 [2022-03-15 14:01:20,210 INFO L226 Difference]: Without dead ends: 20833 [2022-03-15 14:01:20,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=326, Invalid=1080, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:01:20,210 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1283 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:20,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1283 Valid, 2993 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:01:20,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20833 states. [2022-03-15 14:01:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20833 to 13746. [2022-03-15 14:01:20,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13746 states, 13745 states have (on average 2.8516551473263005) internal successors, (39196), 13745 states have internal predecessors, (39196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13746 states to 13746 states and 39196 transitions. [2022-03-15 14:01:20,487 INFO L78 Accepts]: Start accepts. Automaton has 13746 states and 39196 transitions. Word has length 177 [2022-03-15 14:01:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:20,488 INFO L470 AbstractCegarLoop]: Abstraction has 13746 states and 39196 transitions. [2022-03-15 14:01:20,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 13746 states and 39196 transitions. [2022-03-15 14:01:20,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:20,508 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:20,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:20,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-03-15 14:01:20,508 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:20,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:20,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1985312106, now seen corresponding path program 49 times [2022-03-15 14:01:20,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:20,509 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104970602] [2022-03-15 14:01:20,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:20,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:20,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:20,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104970602] [2022-03-15 14:01:20,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104970602] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:20,750 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:20,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:20,751 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188607631] [2022-03-15 14:01:20,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:20,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:20,751 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:20,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:20,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:20,752 INFO L87 Difference]: Start difference. First operand 13746 states and 39196 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:21,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:21,187 INFO L93 Difference]: Finished difference Result 20937 states and 60011 transitions. [2022-03-15 14:01:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:01:21,187 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:21,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:21,227 INFO L225 Difference]: With dead ends: 20937 [2022-03-15 14:01:21,228 INFO L226 Difference]: Without dead ends: 20937 [2022-03-15 14:01:21,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=319, Invalid=1013, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:01:21,228 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 1157 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:21,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 2698 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:01:21,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20937 states. [2022-03-15 14:01:21,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20937 to 13738. [2022-03-15 14:01:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13738 states, 13737 states have (on average 2.850549610540875) internal successors, (39158), 13737 states have internal predecessors, (39158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:21,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13738 states to 13738 states and 39158 transitions. [2022-03-15 14:01:21,519 INFO L78 Accepts]: Start accepts. Automaton has 13738 states and 39158 transitions. Word has length 177 [2022-03-15 14:01:21,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:21,519 INFO L470 AbstractCegarLoop]: Abstraction has 13738 states and 39158 transitions. [2022-03-15 14:01:21,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 13738 states and 39158 transitions. [2022-03-15 14:01:21,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:21,541 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:21,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:21,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-03-15 14:01:21,542 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:21,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1271126418, now seen corresponding path program 67 times [2022-03-15 14:01:21,542 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:21,542 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260444850] [2022-03-15 14:01:21,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:21,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:21,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:21,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:21,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:21,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260444850] [2022-03-15 14:01:21,768 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260444850] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:21,768 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:21,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:01:21,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640197674] [2022-03-15 14:01:21,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:21,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:01:21,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:21,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:01:21,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:01:21,769 INFO L87 Difference]: Start difference. First operand 13738 states and 39158 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:22,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:22,239 INFO L93 Difference]: Finished difference Result 21225 states and 60819 transitions. [2022-03-15 14:01:22,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 14:01:22,239 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:22,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:22,279 INFO L225 Difference]: With dead ends: 21225 [2022-03-15 14:01:22,280 INFO L226 Difference]: Without dead ends: 21225 [2022-03-15 14:01:22,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=389, Invalid=1251, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:01:22,280 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 997 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:22,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 3164 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:01:22,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21225 states. [2022-03-15 14:01:22,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21225 to 13722. [2022-03-15 14:01:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13722 states, 13721 states have (on average 2.850666861015961) internal successors, (39114), 13721 states have internal predecessors, (39114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:22,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13722 states to 13722 states and 39114 transitions. [2022-03-15 14:01:22,553 INFO L78 Accepts]: Start accepts. Automaton has 13722 states and 39114 transitions. Word has length 177 [2022-03-15 14:01:22,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:22,553 INFO L470 AbstractCegarLoop]: Abstraction has 13722 states and 39114 transitions. [2022-03-15 14:01:22,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:22,553 INFO L276 IsEmpty]: Start isEmpty. Operand 13722 states and 39114 transitions. [2022-03-15 14:01:22,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:22,573 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:22,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:22,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-03-15 14:01:22,573 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:22,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:22,574 INFO L85 PathProgramCache]: Analyzing trace with hash 181940902, now seen corresponding path program 50 times [2022-03-15 14:01:22,574 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:22,574 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22020221] [2022-03-15 14:01:22,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:22,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:22,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:22,868 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:22,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22020221] [2022-03-15 14:01:22,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22020221] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:22,869 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:22,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:22,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258571302] [2022-03-15 14:01:22,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:22,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:22,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:22,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:22,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:22,869 INFO L87 Difference]: Start difference. First operand 13722 states and 39114 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:23,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:23,372 INFO L93 Difference]: Finished difference Result 21001 states and 60187 transitions. [2022-03-15 14:01:23,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 14:01:23,372 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:23,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:23,412 INFO L225 Difference]: With dead ends: 21001 [2022-03-15 14:01:23,412 INFO L226 Difference]: Without dead ends: 21001 [2022-03-15 14:01:23,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 14:01:23,414 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 776 mSDsluCounter, 2800 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:23,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 3094 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:01:23,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21001 states. [2022-03-15 14:01:23,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21001 to 13738. [2022-03-15 14:01:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13738 states, 13737 states have (on average 2.850549610540875) internal successors, (39158), 13737 states have internal predecessors, (39158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:23,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13738 states to 13738 states and 39158 transitions. [2022-03-15 14:01:23,701 INFO L78 Accepts]: Start accepts. Automaton has 13738 states and 39158 transitions. Word has length 177 [2022-03-15 14:01:23,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:23,701 INFO L470 AbstractCegarLoop]: Abstraction has 13738 states and 39158 transitions. [2022-03-15 14:01:23,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:23,702 INFO L276 IsEmpty]: Start isEmpty. Operand 13738 states and 39158 transitions. [2022-03-15 14:01:23,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:23,723 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:23,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:23,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-03-15 14:01:23,723 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:23,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1912422520, now seen corresponding path program 51 times [2022-03-15 14:01:23,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:23,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323029576] [2022-03-15 14:01:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:23,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:24,018 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:24,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323029576] [2022-03-15 14:01:24,018 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323029576] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:24,018 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:24,018 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:24,018 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029619359] [2022-03-15 14:01:24,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:24,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:24,019 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:24,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:24,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:24,019 INFO L87 Difference]: Start difference. First operand 13738 states and 39158 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:24,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:24,759 INFO L93 Difference]: Finished difference Result 21865 states and 62659 transitions. [2022-03-15 14:01:24,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 14:01:24,759 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:24,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:24,799 INFO L225 Difference]: With dead ends: 21865 [2022-03-15 14:01:24,799 INFO L226 Difference]: Without dead ends: 21865 [2022-03-15 14:01:24,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 14:01:24,800 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 1017 mSDsluCounter, 2901 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:24,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1017 Valid, 3224 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:01:24,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21865 states. [2022-03-15 14:01:25,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21865 to 13682. [2022-03-15 14:01:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13682 states, 13681 states have (on average 2.8492069293180324) internal successors, (38980), 13681 states have internal predecessors, (38980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13682 states to 13682 states and 38980 transitions. [2022-03-15 14:01:25,052 INFO L78 Accepts]: Start accepts. Automaton has 13682 states and 38980 transitions. Word has length 177 [2022-03-15 14:01:25,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:25,052 INFO L470 AbstractCegarLoop]: Abstraction has 13682 states and 38980 transitions. [2022-03-15 14:01:25,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 13682 states and 38980 transitions. [2022-03-15 14:01:25,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:25,071 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:25,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:25,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-03-15 14:01:25,072 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:25,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:25,072 INFO L85 PathProgramCache]: Analyzing trace with hash 758245182, now seen corresponding path program 52 times [2022-03-15 14:01:25,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:25,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911198926] [2022-03-15 14:01:25,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:25,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:25,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:25,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911198926] [2022-03-15 14:01:25,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911198926] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:25,436 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:25,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:01:25,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904423979] [2022-03-15 14:01:25,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:25,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:01:25,436 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:25,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:01:25,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:01:25,437 INFO L87 Difference]: Start difference. First operand 13682 states and 38980 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:26,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:26,132 INFO L93 Difference]: Finished difference Result 19853 states and 56761 transitions. [2022-03-15 14:01:26,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 14:01:26,132 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:26,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:26,167 INFO L225 Difference]: With dead ends: 19853 [2022-03-15 14:01:26,167 INFO L226 Difference]: Without dead ends: 19853 [2022-03-15 14:01:26,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=1182, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 14:01:26,168 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 1145 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:26,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 2613 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:01:26,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19853 states. [2022-03-15 14:01:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19853 to 13682. [2022-03-15 14:01:26,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13682 states, 13681 states have (on average 2.8492069293180324) internal successors, (38980), 13681 states have internal predecessors, (38980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:26,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13682 states to 13682 states and 38980 transitions. [2022-03-15 14:01:26,406 INFO L78 Accepts]: Start accepts. Automaton has 13682 states and 38980 transitions. Word has length 177 [2022-03-15 14:01:26,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:26,406 INFO L470 AbstractCegarLoop]: Abstraction has 13682 states and 38980 transitions. [2022-03-15 14:01:26,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:26,406 INFO L276 IsEmpty]: Start isEmpty. Operand 13682 states and 38980 transitions. [2022-03-15 14:01:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:26,476 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:26,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:26,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-03-15 14:01:26,476 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:26,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:26,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1815179962, now seen corresponding path program 43 times [2022-03-15 14:01:26,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:26,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207485867] [2022-03-15 14:01:26,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:26,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:26,813 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:26,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207485867] [2022-03-15 14:01:26,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207485867] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:26,813 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:26,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:26,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238940671] [2022-03-15 14:01:26,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:26,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:26,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:26,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:26,814 INFO L87 Difference]: Start difference. First operand 13682 states and 38980 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:27,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:27,499 INFO L93 Difference]: Finished difference Result 19965 states and 57085 transitions. [2022-03-15 14:01:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 14:01:27,500 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:27,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:27,536 INFO L225 Difference]: With dead ends: 19965 [2022-03-15 14:01:27,537 INFO L226 Difference]: Without dead ends: 19965 [2022-03-15 14:01:27,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=372, Invalid=1110, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 14:01:27,537 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 916 mSDsluCounter, 2538 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:27,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 2791 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:01:27,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19965 states. [2022-03-15 14:01:27,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19965 to 13706. [2022-03-15 14:01:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13706 states, 13705 states have (on average 2.849470995986866) internal successors, (39052), 13705 states have internal predecessors, (39052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13706 states to 13706 states and 39052 transitions. [2022-03-15 14:01:27,777 INFO L78 Accepts]: Start accepts. Automaton has 13706 states and 39052 transitions. Word has length 177 [2022-03-15 14:01:27,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:27,777 INFO L470 AbstractCegarLoop]: Abstraction has 13706 states and 39052 transitions. [2022-03-15 14:01:27,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:27,778 INFO L276 IsEmpty]: Start isEmpty. Operand 13706 states and 39052 transitions. [2022-03-15 14:01:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:27,797 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:27,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:27,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-03-15 14:01:27,797 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:27,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:27,798 INFO L85 PathProgramCache]: Analyzing trace with hash -572309710, now seen corresponding path program 44 times [2022-03-15 14:01:27,798 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:27,798 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483583858] [2022-03-15 14:01:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:27,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:28,095 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:28,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483583858] [2022-03-15 14:01:28,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483583858] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:01:28,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076516279] [2022-03-15 14:01:28,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:01:28,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:01:28,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:01:28,097 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:01:28,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-15 14:01:28,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:01:28,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:01:28,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-15 14:01:28,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:01:28,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:01:28,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:28,949 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:29,289 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-15 14:01:29,290 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-15 14:01:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:01:29,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:01:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:39,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076516279] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:01:39,123 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:01:39,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 12] total 53 [2022-03-15 14:01:39,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415626286] [2022-03-15 14:01:39,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:01:39,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-15 14:01:39,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:39,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-15 14:01:39,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=2480, Unknown=16, NotChecked=0, Total=2756 [2022-03-15 14:01:39,124 INFO L87 Difference]: Start difference. First operand 13706 states and 39052 transitions. Second operand has 53 states, 53 states have (on average 7.528301886792453) internal successors, (399), 53 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:41,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:41,129 INFO L93 Difference]: Finished difference Result 21524 states and 61390 transitions. [2022-03-15 14:01:41,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:01:41,130 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 7.528301886792453) internal successors, (399), 53 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:41,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:41,169 INFO L225 Difference]: With dead ends: 21524 [2022-03-15 14:01:41,169 INFO L226 Difference]: Without dead ends: 21524 [2022-03-15 14:01:41,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=1149, Invalid=5641, Unknown=16, NotChecked=0, Total=6806 [2022-03-15 14:01:41,171 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 2652 mSDsluCounter, 7933 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2652 SdHoareTripleChecker+Valid, 8125 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 306 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:41,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2652 Valid, 8125 Invalid, 2870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2512 Invalid, 0 Unknown, 306 Unchecked, 0.8s Time] [2022-03-15 14:01:41,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21524 states. [2022-03-15 14:01:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21524 to 13520. [2022-03-15 14:01:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13520 states, 13519 states have (on average 2.8460684961905467) internal successors, (38476), 13519 states have internal predecessors, (38476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:41,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13520 states to 13520 states and 38476 transitions. [2022-03-15 14:01:41,421 INFO L78 Accepts]: Start accepts. Automaton has 13520 states and 38476 transitions. Word has length 177 [2022-03-15 14:01:41,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:41,421 INFO L470 AbstractCegarLoop]: Abstraction has 13520 states and 38476 transitions. [2022-03-15 14:01:41,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 7.528301886792453) internal successors, (399), 53 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:41,421 INFO L276 IsEmpty]: Start isEmpty. Operand 13520 states and 38476 transitions. [2022-03-15 14:01:41,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:41,440 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:41,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:41,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-15 14:01:41,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:01:41,657 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:41,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:41,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1698179548, now seen corresponding path program 53 times [2022-03-15 14:01:41,657 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:41,658 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907801193] [2022-03-15 14:01:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:41,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:41,977 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:41,977 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907801193] [2022-03-15 14:01:41,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907801193] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:41,977 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:41,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:01:41,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195898840] [2022-03-15 14:01:41,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:41,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:01:41,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:41,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:01:41,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:01:41,978 INFO L87 Difference]: Start difference. First operand 13520 states and 38476 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:42,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:42,643 INFO L93 Difference]: Finished difference Result 19905 states and 56881 transitions. [2022-03-15 14:01:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:01:42,643 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:42,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:42,678 INFO L225 Difference]: With dead ends: 19905 [2022-03-15 14:01:42,678 INFO L226 Difference]: Without dead ends: 19905 [2022-03-15 14:01:42,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:01:42,678 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 950 mSDsluCounter, 2603 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 2865 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:42,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 2865 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:01:42,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19905 states. [2022-03-15 14:01:42,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19905 to 13536. [2022-03-15 14:01:42,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 13535 states have (on average 2.8471370520871813) internal successors, (38536), 13535 states have internal predecessors, (38536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:42,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 38536 transitions. [2022-03-15 14:01:42,915 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 38536 transitions. Word has length 177 [2022-03-15 14:01:42,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:42,915 INFO L470 AbstractCegarLoop]: Abstraction has 13536 states and 38536 transitions. [2022-03-15 14:01:42,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:42,915 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 38536 transitions. [2022-03-15 14:01:42,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:42,934 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:42,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:42,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-03-15 14:01:42,934 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:42,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:42,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1069874186, now seen corresponding path program 45 times [2022-03-15 14:01:42,934 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:42,934 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896540999] [2022-03-15 14:01:42,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:42,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:43,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:43,248 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896540999] [2022-03-15 14:01:43,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896540999] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:43,248 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:43,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:43,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301163315] [2022-03-15 14:01:43,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:43,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:43,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:43,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:43,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:43,249 INFO L87 Difference]: Start difference. First operand 13536 states and 38536 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:43,947 INFO L93 Difference]: Finished difference Result 19859 states and 56751 transitions. [2022-03-15 14:01:43,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:01:43,947 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:43,984 INFO L225 Difference]: With dead ends: 19859 [2022-03-15 14:01:43,984 INFO L226 Difference]: Without dead ends: 19859 [2022-03-15 14:01:43,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1002, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:01:43,984 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 1129 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:43,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 2732 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:01:44,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19859 states. [2022-03-15 14:01:44,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19859 to 13544. [2022-03-15 14:01:44,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13544 states, 13543 states have (on average 2.847079672155357) internal successors, (38558), 13543 states have internal predecessors, (38558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:44,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13544 states to 13544 states and 38558 transitions. [2022-03-15 14:01:44,235 INFO L78 Accepts]: Start accepts. Automaton has 13544 states and 38558 transitions. Word has length 177 [2022-03-15 14:01:44,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:44,235 INFO L470 AbstractCegarLoop]: Abstraction has 13544 states and 38558 transitions. [2022-03-15 14:01:44,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:44,235 INFO L276 IsEmpty]: Start isEmpty. Operand 13544 states and 38558 transitions. [2022-03-15 14:01:44,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:44,256 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:44,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:44,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-03-15 14:01:44,256 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:44,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:44,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1271423076, now seen corresponding path program 68 times [2022-03-15 14:01:44,257 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:44,257 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121538598] [2022-03-15 14:01:44,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:44,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:44,653 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:44,653 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121538598] [2022-03-15 14:01:44,653 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121538598] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:44,653 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:44,653 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:01:44,653 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409487983] [2022-03-15 14:01:44,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:44,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:01:44,653 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:44,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:01:44,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:01:44,653 INFO L87 Difference]: Start difference. First operand 13544 states and 38558 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:45,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:45,331 INFO L93 Difference]: Finished difference Result 20101 states and 57437 transitions. [2022-03-15 14:01:45,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 14:01:45,331 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:45,369 INFO L225 Difference]: With dead ends: 20101 [2022-03-15 14:01:45,369 INFO L226 Difference]: Without dead ends: 20101 [2022-03-15 14:01:45,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:01:45,370 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 936 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:45,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [936 Valid, 3174 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:01:45,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20101 states. [2022-03-15 14:01:45,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20101 to 13536. [2022-03-15 14:01:45,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 13535 states have (on average 2.8471370520871813) internal successors, (38536), 13535 states have internal predecessors, (38536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:45,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 38536 transitions. [2022-03-15 14:01:45,676 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 38536 transitions. Word has length 177 [2022-03-15 14:01:45,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:45,676 INFO L470 AbstractCegarLoop]: Abstraction has 13536 states and 38536 transitions. [2022-03-15 14:01:45,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:45,676 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 38536 transitions. [2022-03-15 14:01:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:45,696 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:45,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:45,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-03-15 14:01:45,697 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:45,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:45,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1401784550, now seen corresponding path program 54 times [2022-03-15 14:01:45,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:45,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660618452] [2022-03-15 14:01:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:45,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:46,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:46,042 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:46,042 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660618452] [2022-03-15 14:01:46,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660618452] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:46,042 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:46,042 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:46,042 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856920982] [2022-03-15 14:01:46,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:46,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:46,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:46,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:46,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:46,043 INFO L87 Difference]: Start difference. First operand 13536 states and 38536 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:46,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:46,723 INFO L93 Difference]: Finished difference Result 20205 states and 57731 transitions. [2022-03-15 14:01:46,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 14:01:46,724 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:46,759 INFO L225 Difference]: With dead ends: 20205 [2022-03-15 14:01:46,759 INFO L226 Difference]: Without dead ends: 20205 [2022-03-15 14:01:46,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=297, Invalid=963, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 14:01:46,760 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 977 mSDsluCounter, 3077 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 3344 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:46,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [977 Valid, 3344 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:01:46,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20205 states. [2022-03-15 14:01:46,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20205 to 13512. [2022-03-15 14:01:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13512 states, 13511 states have (on average 2.845533269188069) internal successors, (38446), 13511 states have internal predecessors, (38446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13512 states to 13512 states and 38446 transitions. [2022-03-15 14:01:47,000 INFO L78 Accepts]: Start accepts. Automaton has 13512 states and 38446 transitions. Word has length 177 [2022-03-15 14:01:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:47,001 INFO L470 AbstractCegarLoop]: Abstraction has 13512 states and 38446 transitions. [2022-03-15 14:01:47,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 13512 states and 38446 transitions. [2022-03-15 14:01:47,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:47,021 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:47,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:47,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-03-15 14:01:47,022 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:47,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:47,022 INFO L85 PathProgramCache]: Analyzing trace with hash 920866516, now seen corresponding path program 55 times [2022-03-15 14:01:47,022 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:47,022 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129285720] [2022-03-15 14:01:47,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:47,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:47,344 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:47,344 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129285720] [2022-03-15 14:01:47,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129285720] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:47,345 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:47,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:01:47,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70766104] [2022-03-15 14:01:47,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:47,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:01:47,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:47,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:01:47,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:01:47,345 INFO L87 Difference]: Start difference. First operand 13512 states and 38446 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:47,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:47,829 INFO L93 Difference]: Finished difference Result 19969 states and 57081 transitions. [2022-03-15 14:01:47,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:01:47,830 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:47,866 INFO L225 Difference]: With dead ends: 19969 [2022-03-15 14:01:47,866 INFO L226 Difference]: Without dead ends: 19969 [2022-03-15 14:01:47,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:01:47,866 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1087 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2500 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:47,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 2500 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:01:47,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19969 states. [2022-03-15 14:01:48,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19969 to 13544. [2022-03-15 14:01:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13544 states, 13543 states have (on average 2.847079672155357) internal successors, (38558), 13543 states have internal predecessors, (38558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:48,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13544 states to 13544 states and 38558 transitions. [2022-03-15 14:01:48,135 INFO L78 Accepts]: Start accepts. Automaton has 13544 states and 38558 transitions. Word has length 177 [2022-03-15 14:01:48,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:48,135 INFO L470 AbstractCegarLoop]: Abstraction has 13544 states and 38558 transitions. [2022-03-15 14:01:48,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:48,136 INFO L276 IsEmpty]: Start isEmpty. Operand 13544 states and 38558 transitions. [2022-03-15 14:01:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:48,156 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:48,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:48,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-03-15 14:01:48,156 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:48,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:48,157 INFO L85 PathProgramCache]: Analyzing trace with hash -606047046, now seen corresponding path program 46 times [2022-03-15 14:01:48,157 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:48,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275724430] [2022-03-15 14:01:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:48,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:48,399 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:48,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275724430] [2022-03-15 14:01:48,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275724430] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:48,399 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:48,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:48,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985883616] [2022-03-15 14:01:48,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:48,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:48,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:48,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:48,399 INFO L87 Difference]: Start difference. First operand 13544 states and 38558 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:48,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:48,894 INFO L93 Difference]: Finished difference Result 19931 states and 56973 transitions. [2022-03-15 14:01:48,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:01:48,895 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:48,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:48,931 INFO L225 Difference]: With dead ends: 19931 [2022-03-15 14:01:48,931 INFO L226 Difference]: Without dead ends: 19931 [2022-03-15 14:01:48,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:01:48,932 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 968 mSDsluCounter, 2788 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:48,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 3046 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:01:48,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19931 states. [2022-03-15 14:01:49,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19931 to 13560. [2022-03-15 14:01:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13560 states, 13559 states have (on average 2.8469651154214914) internal successors, (38602), 13559 states have internal predecessors, (38602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:49,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13560 states to 13560 states and 38602 transitions. [2022-03-15 14:01:49,192 INFO L78 Accepts]: Start accepts. Automaton has 13560 states and 38602 transitions. Word has length 177 [2022-03-15 14:01:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:49,193 INFO L470 AbstractCegarLoop]: Abstraction has 13560 states and 38602 transitions. [2022-03-15 14:01:49,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:49,193 INFO L276 IsEmpty]: Start isEmpty. Operand 13560 states and 38602 transitions. [2022-03-15 14:01:49,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:49,214 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:49,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:49,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-03-15 14:01:49,214 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:49,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:49,215 INFO L85 PathProgramCache]: Analyzing trace with hash -404498156, now seen corresponding path program 69 times [2022-03-15 14:01:49,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:49,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191105266] [2022-03-15 14:01:49,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:49,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:49,470 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:49,470 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191105266] [2022-03-15 14:01:49,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191105266] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:49,470 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:49,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:01:49,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632821833] [2022-03-15 14:01:49,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:49,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:01:49,470 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:49,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:01:49,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:01:49,471 INFO L87 Difference]: Start difference. First operand 13560 states and 38602 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:50,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:50,160 INFO L93 Difference]: Finished difference Result 20189 states and 57703 transitions. [2022-03-15 14:01:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:01:50,161 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:50,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:50,203 INFO L225 Difference]: With dead ends: 20189 [2022-03-15 14:01:50,203 INFO L226 Difference]: Without dead ends: 20189 [2022-03-15 14:01:50,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:01:50,204 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 922 mSDsluCounter, 2845 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:50,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 3121 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 14:01:50,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20189 states. [2022-03-15 14:01:50,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20189 to 13560. [2022-03-15 14:01:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13560 states, 13559 states have (on average 2.8469651154214914) internal successors, (38602), 13559 states have internal predecessors, (38602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:50,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13560 states to 13560 states and 38602 transitions. [2022-03-15 14:01:50,480 INFO L78 Accepts]: Start accepts. Automaton has 13560 states and 38602 transitions. Word has length 177 [2022-03-15 14:01:50,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:50,480 INFO L470 AbstractCegarLoop]: Abstraction has 13560 states and 38602 transitions. [2022-03-15 14:01:50,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:50,480 INFO L276 IsEmpty]: Start isEmpty. Operand 13560 states and 38602 transitions. [2022-03-15 14:01:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:50,499 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:50,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:50,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-03-15 14:01:50,499 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:50,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:50,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1217261514, now seen corresponding path program 56 times [2022-03-15 14:01:50,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:50,499 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785535107] [2022-03-15 14:01:50,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:50,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:50,766 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:50,766 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785535107] [2022-03-15 14:01:50,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785535107] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:50,766 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:50,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:50,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037600035] [2022-03-15 14:01:50,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:50,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:50,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:50,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:50,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:50,767 INFO L87 Difference]: Start difference. First operand 13560 states and 38602 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:51,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:51,203 INFO L93 Difference]: Finished difference Result 20301 states and 58019 transitions. [2022-03-15 14:01:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:01:51,203 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:51,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:51,240 INFO L225 Difference]: With dead ends: 20301 [2022-03-15 14:01:51,240 INFO L226 Difference]: Without dead ends: 20301 [2022-03-15 14:01:51,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:01:51,240 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 965 mSDsluCounter, 2480 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:51,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 2748 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:01:51,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20301 states. [2022-03-15 14:01:51,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20301 to 13552. [2022-03-15 14:01:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13552 states, 13551 states have (on average 2.8458416353036675) internal successors, (38564), 13551 states have internal predecessors, (38564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13552 states to 13552 states and 38564 transitions. [2022-03-15 14:01:51,487 INFO L78 Accepts]: Start accepts. Automaton has 13552 states and 38564 transitions. Word has length 177 [2022-03-15 14:01:51,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:51,488 INFO L470 AbstractCegarLoop]: Abstraction has 13552 states and 38564 transitions. [2022-03-15 14:01:51,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:51,488 INFO L276 IsEmpty]: Start isEmpty. Operand 13552 states and 38564 transitions. [2022-03-15 14:01:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:51,507 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:51,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:51,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-03-15 14:01:51,507 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:51,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:51,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2039177010, now seen corresponding path program 70 times [2022-03-15 14:01:51,508 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:51,508 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911061247] [2022-03-15 14:01:51,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:51,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:51,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:51,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911061247] [2022-03-15 14:01:51,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911061247] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:51,828 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:51,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:01:51,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547337609] [2022-03-15 14:01:51,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:51,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:01:51,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:51,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:01:51,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:01:51,829 INFO L87 Difference]: Start difference. First operand 13552 states and 38564 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:52,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:52,355 INFO L93 Difference]: Finished difference Result 20525 states and 58635 transitions. [2022-03-15 14:01:52,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 14:01:52,355 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:52,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:52,396 INFO L225 Difference]: With dead ends: 20525 [2022-03-15 14:01:52,396 INFO L226 Difference]: Without dead ends: 20525 [2022-03-15 14:01:52,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=365, Invalid=1195, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 14:01:52,397 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 900 mSDsluCounter, 3275 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 3558 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:52,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 3558 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:01:52,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20525 states. [2022-03-15 14:01:52,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20525 to 13536. [2022-03-15 14:01:52,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13536 states, 13535 states have (on average 2.8459549316586625) internal successors, (38520), 13535 states have internal predecessors, (38520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:52,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13536 states to 13536 states and 38520 transitions. [2022-03-15 14:01:52,698 INFO L78 Accepts]: Start accepts. Automaton has 13536 states and 38520 transitions. Word has length 177 [2022-03-15 14:01:52,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:52,698 INFO L470 AbstractCegarLoop]: Abstraction has 13536 states and 38520 transitions. [2022-03-15 14:01:52,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:52,698 INFO L276 IsEmpty]: Start isEmpty. Operand 13536 states and 38520 transitions. [2022-03-15 14:01:52,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:52,720 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:52,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:52,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-03-15 14:01:52,721 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:52,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash -586109690, now seen corresponding path program 57 times [2022-03-15 14:01:52,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:52,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902901813] [2022-03-15 14:01:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:52,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:52,951 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:52,951 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902901813] [2022-03-15 14:01:52,951 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902901813] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:52,951 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:52,951 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:52,951 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609520744] [2022-03-15 14:01:52,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:52,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:52,952 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:52,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:52,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:52,952 INFO L87 Difference]: Start difference. First operand 13536 states and 38520 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:53,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:53,432 INFO L93 Difference]: Finished difference Result 20309 states and 58025 transitions. [2022-03-15 14:01:53,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 14:01:53,433 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:53,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:53,472 INFO L225 Difference]: With dead ends: 20309 [2022-03-15 14:01:53,472 INFO L226 Difference]: Without dead ends: 20309 [2022-03-15 14:01:53,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=357, Invalid=1125, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 14:01:53,472 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 767 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:53,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 2943 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:01:53,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20309 states. [2022-03-15 14:01:53,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20309 to 13552. [2022-03-15 14:01:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13552 states, 13551 states have (on average 2.8458416353036675) internal successors, (38564), 13551 states have internal predecessors, (38564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13552 states to 13552 states and 38564 transitions. [2022-03-15 14:01:53,765 INFO L78 Accepts]: Start accepts. Automaton has 13552 states and 38564 transitions. Word has length 177 [2022-03-15 14:01:53,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:53,765 INFO L470 AbstractCegarLoop]: Abstraction has 13552 states and 38564 transitions. [2022-03-15 14:01:53,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:53,766 INFO L276 IsEmpty]: Start isEmpty. Operand 13552 states and 38564 transitions. [2022-03-15 14:01:53,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:53,789 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:53,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:53,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-03-15 14:01:53,790 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:53,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:53,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1614494184, now seen corresponding path program 58 times [2022-03-15 14:01:53,790 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:53,790 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335870927] [2022-03-15 14:01:53,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:53,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:54,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:54,057 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:54,057 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335870927] [2022-03-15 14:01:54,057 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335870927] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:54,057 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:54,057 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:54,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382388374] [2022-03-15 14:01:54,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:54,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:54,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:54,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:54,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:54,058 INFO L87 Difference]: Start difference. First operand 13552 states and 38564 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:54,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:54,613 INFO L93 Difference]: Finished difference Result 21173 states and 60497 transitions. [2022-03-15 14:01:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 14:01:54,613 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:54,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:54,654 INFO L225 Difference]: With dead ends: 21173 [2022-03-15 14:01:54,654 INFO L226 Difference]: Without dead ends: 21173 [2022-03-15 14:01:54,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=386, Invalid=1254, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:01:54,654 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 1063 mSDsluCounter, 3274 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 3563 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:54,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1063 Valid, 3563 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:01:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21173 states. [2022-03-15 14:01:54,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21173 to 13488. [2022-03-15 14:01:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13488 states, 13487 states have (on average 2.845703269815378) internal successors, (38380), 13487 states have internal predecessors, (38380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:54,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13488 states to 13488 states and 38380 transitions. [2022-03-15 14:01:54,936 INFO L78 Accepts]: Start accepts. Automaton has 13488 states and 38380 transitions. Word has length 177 [2022-03-15 14:01:54,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:54,936 INFO L470 AbstractCegarLoop]: Abstraction has 13488 states and 38380 transitions. [2022-03-15 14:01:54,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:54,937 INFO L276 IsEmpty]: Start isEmpty. Operand 13488 states and 38380 transitions. [2022-03-15 14:01:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:54,959 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:54,960 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:54,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-03-15 14:01:54,960 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:54,960 INFO L85 PathProgramCache]: Analyzing trace with hash 64342592, now seen corresponding path program 71 times [2022-03-15 14:01:54,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:54,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241947870] [2022-03-15 14:01:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:54,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:55,164 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:55,164 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241947870] [2022-03-15 14:01:55,164 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241947870] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:01:55,164 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:01:55,164 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:01:55,164 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064903587] [2022-03-15 14:01:55,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:01:55,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:01:55,164 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:55,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:01:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:01:55,165 INFO L87 Difference]: Start difference. First operand 13488 states and 38380 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:55,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:01:55,684 INFO L93 Difference]: Finished difference Result 23360 states and 66714 transitions. [2022-03-15 14:01:55,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 14:01:55,684 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:01:55,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:01:55,727 INFO L225 Difference]: With dead ends: 23360 [2022-03-15 14:01:55,727 INFO L226 Difference]: Without dead ends: 23360 [2022-03-15 14:01:55,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=393, Invalid=1247, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 14:01:55,728 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 1192 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 3810 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:01:55,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1192 Valid, 3810 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:01:55,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23360 states. [2022-03-15 14:01:55,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23360 to 13488. [2022-03-15 14:01:55,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13488 states, 13487 states have (on average 2.845703269815378) internal successors, (38380), 13487 states have internal predecessors, (38380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13488 states to 13488 states and 38380 transitions. [2022-03-15 14:01:55,999 INFO L78 Accepts]: Start accepts. Automaton has 13488 states and 38380 transitions. Word has length 177 [2022-03-15 14:01:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:01:55,999 INFO L470 AbstractCegarLoop]: Abstraction has 13488 states and 38380 transitions. [2022-03-15 14:01:55,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:01:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 13488 states and 38380 transitions. [2022-03-15 14:01:56,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:01:56,019 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:01:56,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:01:56,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-03-15 14:01:56,020 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:01:56,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:01:56,020 INFO L85 PathProgramCache]: Analyzing trace with hash 973513084, now seen corresponding path program 59 times [2022-03-15 14:01:56,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:01:56,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611242954] [2022-03-15 14:01:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:01:56,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:01:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:01:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:56,238 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:01:56,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611242954] [2022-03-15 14:01:56,238 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611242954] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:01:56,238 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754117974] [2022-03-15 14:01:56,238 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:01:56,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:01:56,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:01:56,239 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:01:56,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-15 14:01:56,488 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:01:56,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:01:56,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-15 14:01:56,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:01:56,576 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:56,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:01:56,847 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:01:56,847 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:01:56,953 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:01:57,149 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:57,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:01:57,499 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 14:01:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:01:57,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:01:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:01:57,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754117974] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:01:57,754 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:01:57,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-03-15 14:01:57,754 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700985244] [2022-03-15 14:01:57,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:01:57,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-15 14:01:57,754 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:01:57,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-15 14:01:57,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=2125, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:01:57,755 INFO L87 Difference]: Start difference. First operand 13488 states and 38380 transitions. Second operand has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:03,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:03,906 INFO L93 Difference]: Finished difference Result 43668 states and 125633 transitions. [2022-03-15 14:02:03,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-15 14:02:03,906 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:02:03,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:03,993 INFO L225 Difference]: With dead ends: 43668 [2022-03-15 14:02:03,993 INFO L226 Difference]: Without dead ends: 43668 [2022-03-15 14:02:03,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 334 SyntacticMatches, 6 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3239 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2497, Invalid=9713, Unknown=0, NotChecked=0, Total=12210 [2022-03-15 14:02:03,994 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 3672 mSDsluCounter, 9079 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3672 SdHoareTripleChecker+Valid, 9323 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:03,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3672 Valid, 9323 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2809 Invalid, 0 Unknown, 157 Unchecked, 1.2s Time] [2022-03-15 14:02:04,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43668 states. [2022-03-15 14:02:04,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43668 to 13488. [2022-03-15 14:02:04,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13488 states, 13487 states have (on average 2.845703269815378) internal successors, (38380), 13487 states have internal predecessors, (38380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:04,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13488 states to 13488 states and 38380 transitions. [2022-03-15 14:02:04,422 INFO L78 Accepts]: Start accepts. Automaton has 13488 states and 38380 transitions. Word has length 177 [2022-03-15 14:02:04,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:04,422 INFO L470 AbstractCegarLoop]: Abstraction has 13488 states and 38380 transitions. [2022-03-15 14:02:04,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.816326530612245) internal successors, (383), 49 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:04,423 INFO L276 IsEmpty]: Start isEmpty. Operand 13488 states and 38380 transitions. [2022-03-15 14:02:04,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:02:04,441 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:04,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:04,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-15 14:02:04,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2022-03-15 14:02:04,656 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:04,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:04,656 INFO L85 PathProgramCache]: Analyzing trace with hash 660843338, now seen corresponding path program 60 times [2022-03-15 14:02:04,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:04,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556867638] [2022-03-15 14:02:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:04,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:04,947 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:04,947 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:04,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556867638] [2022-03-15 14:02:04,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556867638] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:04,947 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:04,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:02:04,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528374988] [2022-03-15 14:02:04,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:04,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:02:04,948 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:04,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:02:04,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:02:04,948 INFO L87 Difference]: Start difference. First operand 13488 states and 38380 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:05,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:05,430 INFO L93 Difference]: Finished difference Result 19137 states and 54525 transitions. [2022-03-15 14:02:05,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 14:02:05,430 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:02:05,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:05,463 INFO L225 Difference]: With dead ends: 19137 [2022-03-15 14:02:05,463 INFO L226 Difference]: Without dead ends: 19137 [2022-03-15 14:02:05,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:02:05,464 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 825 mSDsluCounter, 3195 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 3453 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:05,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [825 Valid, 3453 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:02:05,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19137 states. [2022-03-15 14:02:05,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19137 to 13488. [2022-03-15 14:02:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13488 states, 13487 states have (on average 2.845110106028027) internal successors, (38372), 13487 states have internal predecessors, (38372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13488 states to 13488 states and 38372 transitions. [2022-03-15 14:02:05,693 INFO L78 Accepts]: Start accepts. Automaton has 13488 states and 38372 transitions. Word has length 177 [2022-03-15 14:02:05,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:05,693 INFO L470 AbstractCegarLoop]: Abstraction has 13488 states and 38372 transitions. [2022-03-15 14:02:05,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:05,693 INFO L276 IsEmpty]: Start isEmpty. Operand 13488 states and 38372 transitions. [2022-03-15 14:02:05,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:02:05,711 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:05,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:05,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-03-15 14:02:05,712 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash -866070224, now seen corresponding path program 47 times [2022-03-15 14:02:05,712 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:05,712 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149453414] [2022-03-15 14:02:05,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:05,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:05,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:05,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149453414] [2022-03-15 14:02:05,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149453414] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:05,930 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:05,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:02:05,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609754313] [2022-03-15 14:02:05,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:05,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:02:05,930 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:02:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:02:05,930 INFO L87 Difference]: Start difference. First operand 13488 states and 38372 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:06,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:06,409 INFO L93 Difference]: Finished difference Result 18861 states and 53463 transitions. [2022-03-15 14:02:06,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 14:02:06,409 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:02:06,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:06,441 INFO L225 Difference]: With dead ends: 18861 [2022-03-15 14:02:06,442 INFO L226 Difference]: Without dead ends: 18861 [2022-03-15 14:02:06,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 14:02:06,442 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1251 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:06,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 2485 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:02:06,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18861 states. [2022-03-15 14:02:06,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18861 to 13220. [2022-03-15 14:02:06,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13220 states, 13219 states have (on average 2.8259323700733794) internal successors, (37356), 13219 states have internal predecessors, (37356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13220 states to 13220 states and 37356 transitions. [2022-03-15 14:02:06,679 INFO L78 Accepts]: Start accepts. Automaton has 13220 states and 37356 transitions. Word has length 177 [2022-03-15 14:02:06,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:06,680 INFO L470 AbstractCegarLoop]: Abstraction has 13220 states and 37356 transitions. [2022-03-15 14:02:06,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 13220 states and 37356 transitions. [2022-03-15 14:02:06,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:02:06,699 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:06,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:06,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-03-15 14:02:06,699 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:06,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:06,699 INFO L85 PathProgramCache]: Analyzing trace with hash -664521334, now seen corresponding path program 72 times [2022-03-15 14:02:06,699 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:06,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531082528] [2022-03-15 14:02:06,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:06,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:07,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:07,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531082528] [2022-03-15 14:02:07,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531082528] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:07,016 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:07,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:02:07,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765507461] [2022-03-15 14:02:07,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:07,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:02:07,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:07,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:02:07,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:02:07,018 INFO L87 Difference]: Start difference. First operand 13220 states and 37356 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:07,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:07,463 INFO L93 Difference]: Finished difference Result 18903 states and 53575 transitions. [2022-03-15 14:02:07,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 14:02:07,463 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:02:07,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:07,496 INFO L225 Difference]: With dead ends: 18903 [2022-03-15 14:02:07,497 INFO L226 Difference]: Without dead ends: 18903 [2022-03-15 14:02:07,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 14:02:07,497 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 1070 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:07,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 3060 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:02:07,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18903 states. [2022-03-15 14:02:07,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18903 to 13220. [2022-03-15 14:02:07,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13220 states, 13219 states have (on average 2.8259323700733794) internal successors, (37356), 13219 states have internal predecessors, (37356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:07,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13220 states to 13220 states and 37356 transitions. [2022-03-15 14:02:07,724 INFO L78 Accepts]: Start accepts. Automaton has 13220 states and 37356 transitions. Word has length 177 [2022-03-15 14:02:07,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:07,724 INFO L470 AbstractCegarLoop]: Abstraction has 13220 states and 37356 transitions. [2022-03-15 14:02:07,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:07,725 INFO L276 IsEmpty]: Start isEmpty. Operand 13220 states and 37356 transitions. [2022-03-15 14:02:07,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:02:07,742 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:07,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:07,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-03-15 14:02:07,743 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:07,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:07,743 INFO L85 PathProgramCache]: Analyzing trace with hash 957238336, now seen corresponding path program 61 times [2022-03-15 14:02:07,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:07,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040133320] [2022-03-15 14:02:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:07,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:08,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:08,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040133320] [2022-03-15 14:02:08,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040133320] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:08,036 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:08,036 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:02:08,036 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347098711] [2022-03-15 14:02:08,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:08,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:02:08,036 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:08,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:02:08,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:02:08,037 INFO L87 Difference]: Start difference. First operand 13220 states and 37356 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:08,436 INFO L93 Difference]: Finished difference Result 19127 states and 54223 transitions. [2022-03-15 14:02:08,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 14:02:08,437 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:02:08,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:08,472 INFO L225 Difference]: With dead ends: 19127 [2022-03-15 14:02:08,472 INFO L226 Difference]: Without dead ends: 19127 [2022-03-15 14:02:08,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 14:02:08,473 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1071 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:08,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 2801 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:02:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19127 states. [2022-03-15 14:02:08,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19127 to 13212. [2022-03-15 14:02:08,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13212 states, 13211 states have (on average 2.824767239421694) internal successors, (37318), 13211 states have internal predecessors, (37318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:08,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13212 states to 13212 states and 37318 transitions. [2022-03-15 14:02:08,707 INFO L78 Accepts]: Start accepts. Automaton has 13212 states and 37318 transitions. Word has length 177 [2022-03-15 14:02:08,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:08,707 INFO L470 AbstractCegarLoop]: Abstraction has 13212 states and 37318 transitions. [2022-03-15 14:02:08,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 13212 states and 37318 transitions. [2022-03-15 14:02:08,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:02:08,725 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:08,725 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:08,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2022-03-15 14:02:08,726 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:08,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1995767108, now seen corresponding path program 73 times [2022-03-15 14:02:08,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:08,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556207112] [2022-03-15 14:02:08,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:08,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:08,984 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:08,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556207112] [2022-03-15 14:02:08,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556207112] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:08,985 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:08,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-03-15 14:02:08,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769902546] [2022-03-15 14:02:08,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:08,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 14:02:08,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 14:02:08,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-03-15 14:02:08,985 INFO L87 Difference]: Start difference. First operand 13212 states and 37318 transitions. Second operand has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:09,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:09,528 INFO L93 Difference]: Finished difference Result 19311 states and 54721 transitions. [2022-03-15 14:02:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:02:09,528 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:02:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:09,565 INFO L225 Difference]: With dead ends: 19311 [2022-03-15 14:02:09,565 INFO L226 Difference]: Without dead ends: 19311 [2022-03-15 14:02:09,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=1082, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:02:09,566 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 894 mSDsluCounter, 2893 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 3192 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:09,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 3192 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:02:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19311 states. [2022-03-15 14:02:09,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19311 to 13212. [2022-03-15 14:02:09,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13212 states, 13211 states have (on average 2.824767239421694) internal successors, (37318), 13211 states have internal predecessors, (37318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13212 states to 13212 states and 37318 transitions. [2022-03-15 14:02:09,829 INFO L78 Accepts]: Start accepts. Automaton has 13212 states and 37318 transitions. Word has length 177 [2022-03-15 14:02:09,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:09,829 INFO L470 AbstractCegarLoop]: Abstraction has 13212 states and 37318 transitions. [2022-03-15 14:02:09,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.428571428571429) internal successors, (177), 21 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand 13212 states and 37318 transitions. [2022-03-15 14:02:09,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:02:09,848 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:09,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:09,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2022-03-15 14:02:09,848 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:09,849 INFO L85 PathProgramCache]: Analyzing trace with hash -846132868, now seen corresponding path program 62 times [2022-03-15 14:02:09,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:09,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900652059] [2022-03-15 14:02:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:09,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:10,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:10,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900652059] [2022-03-15 14:02:10,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900652059] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:10,180 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:10,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:02:10,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084276669] [2022-03-15 14:02:10,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:10,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:02:10,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:10,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:02:10,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:02:10,180 INFO L87 Difference]: Start difference. First operand 13212 states and 37318 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:10,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:10,607 INFO L93 Difference]: Finished difference Result 19223 states and 54487 transitions. [2022-03-15 14:02:10,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 14:02:10,607 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:02:10,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:10,639 INFO L225 Difference]: With dead ends: 19223 [2022-03-15 14:02:10,639 INFO L226 Difference]: Without dead ends: 19223 [2022-03-15 14:02:10,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-03-15 14:02:10,639 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1015 mSDsluCounter, 2501 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:10,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 2797 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:02:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19223 states. [2022-03-15 14:02:10,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19223 to 13244. [2022-03-15 14:02:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13244 states, 13243 states have (on average 2.824586574039115) internal successors, (37406), 13243 states have internal predecessors, (37406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:10,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13244 states to 13244 states and 37406 transitions. [2022-03-15 14:02:10,869 INFO L78 Accepts]: Start accepts. Automaton has 13244 states and 37406 transitions. Word has length 177 [2022-03-15 14:02:10,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:10,869 INFO L470 AbstractCegarLoop]: Abstraction has 13244 states and 37406 transitions. [2022-03-15 14:02:10,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 13244 states and 37406 transitions. [2022-03-15 14:02:10,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:02:10,887 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:10,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:10,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-03-15 14:02:10,887 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:10,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:10,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1354471006, now seen corresponding path program 63 times [2022-03-15 14:02:10,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:10,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95935978] [2022-03-15 14:02:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:10,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:11,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:11,122 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:11,122 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95935978] [2022-03-15 14:02:11,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95935978] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:11,123 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:11,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:02:11,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180960454] [2022-03-15 14:02:11,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:11,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:02:11,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:11,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:02:11,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:02:11,123 INFO L87 Difference]: Start difference. First operand 13244 states and 37406 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:11,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:11,634 INFO L93 Difference]: Finished difference Result 20087 states and 56959 transitions. [2022-03-15 14:02:11,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 14:02:11,634 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:02:11,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:11,669 INFO L225 Difference]: With dead ends: 20087 [2022-03-15 14:02:11,669 INFO L226 Difference]: Without dead ends: 20087 [2022-03-15 14:02:11,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=362, Invalid=1198, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 14:02:11,669 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 838 mSDsluCounter, 3443 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:11,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [838 Valid, 3732 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:02:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20087 states. [2022-03-15 14:02:11,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20087 to 13188. [2022-03-15 14:02:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13187 states have (on average 2.823083339652688) internal successors, (37228), 13187 states have internal predecessors, (37228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 37228 transitions. [2022-03-15 14:02:11,919 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 37228 transitions. Word has length 177 [2022-03-15 14:02:11,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:11,919 INFO L470 AbstractCegarLoop]: Abstraction has 13188 states and 37228 transitions. [2022-03-15 14:02:11,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:11,919 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 37228 transitions. [2022-03-15 14:02:11,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:02:11,938 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:11,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:11,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-03-15 14:02:11,938 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:11,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:11,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1320257190, now seen corresponding path program 74 times [2022-03-15 14:02:11,939 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:11,939 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145940079] [2022-03-15 14:02:11,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:11,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:12,127 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:12,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145940079] [2022-03-15 14:02:12,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145940079] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:12,127 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:12,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-03-15 14:02:12,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955727628] [2022-03-15 14:02:12,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:12,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 14:02:12,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:12,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 14:02:12,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-03-15 14:02:12,128 INFO L87 Difference]: Start difference. First operand 13188 states and 37228 transitions. Second operand has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:12,555 INFO L93 Difference]: Finished difference Result 19370 states and 54329 transitions. [2022-03-15 14:02:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 14:02:12,559 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:02:12,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:12,592 INFO L225 Difference]: With dead ends: 19370 [2022-03-15 14:02:12,592 INFO L226 Difference]: Without dead ends: 19370 [2022-03-15 14:02:12,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=316, Invalid=1016, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 14:02:12,592 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 1169 mSDsluCounter, 3214 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:12,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1169 Valid, 3554 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:02:12,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19370 states. [2022-03-15 14:02:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19370 to 12780. [2022-03-15 14:02:12,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12780 states, 12779 states have (on average 2.807731434384537) internal successors, (35880), 12779 states have internal predecessors, (35880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:12,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12780 states to 12780 states and 35880 transitions. [2022-03-15 14:02:12,824 INFO L78 Accepts]: Start accepts. Automaton has 12780 states and 35880 transitions. Word has length 177 [2022-03-15 14:02:12,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:12,825 INFO L470 AbstractCegarLoop]: Abstraction has 12780 states and 35880 transitions. [2022-03-15 14:02:12,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 8.85) internal successors, (177), 20 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:12,825 INFO L276 IsEmpty]: Start isEmpty. Operand 12780 states and 35880 transitions. [2022-03-15 14:02:12,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:02:12,842 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:12,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:12,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-03-15 14:02:12,842 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:12,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:12,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1967543744, now seen corresponding path program 64 times [2022-03-15 14:02:12,843 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:12,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792218940] [2022-03-15 14:02:12,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:12,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:13,025 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:13,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792218940] [2022-03-15 14:02:13,025 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792218940] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:13,025 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861006467] [2022-03-15 14:02:13,025 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:02:13,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:13,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:02:13,026 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:02:13,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-15 14:02:13,275 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:02:13,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:02:13,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 14:02:13,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:02:13,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:02:13,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:13,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:13,935 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 14:02:13,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2022-03-15 14:02:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:02:13,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:02:14,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:14,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861006467] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:02:14,193 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:02:14,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 9] total 47 [2022-03-15 14:02:14,193 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024102148] [2022-03-15 14:02:14,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:02:14,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 14:02:14,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:14,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 14:02:14,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1973, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:02:14,194 INFO L87 Difference]: Start difference. First operand 12780 states and 35880 transitions. Second operand has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:16,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:16,416 INFO L93 Difference]: Finished difference Result 19272 states and 54024 transitions. [2022-03-15 14:02:16,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:02:16,416 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:02:16,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:16,450 INFO L225 Difference]: With dead ends: 19272 [2022-03-15 14:02:16,451 INFO L226 Difference]: Without dead ends: 19272 [2022-03-15 14:02:16,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1155, Invalid=5165, Unknown=0, NotChecked=0, Total=6320 [2022-03-15 14:02:16,452 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 3025 mSDsluCounter, 8387 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3025 SdHoareTripleChecker+Valid, 8700 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 347 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:16,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3025 Valid, 8700 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2125 Invalid, 0 Unknown, 347 Unchecked, 0.8s Time] [2022-03-15 14:02:16,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19272 states. [2022-03-15 14:02:16,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19272 to 12528. [2022-03-15 14:02:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12528 states, 12527 states have (on average 2.80665761954179) internal successors, (35159), 12527 states have internal predecessors, (35159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:16,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12528 states to 12528 states and 35159 transitions. [2022-03-15 14:02:16,714 INFO L78 Accepts]: Start accepts. Automaton has 12528 states and 35159 transitions. Word has length 177 [2022-03-15 14:02:16,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:16,715 INFO L470 AbstractCegarLoop]: Abstraction has 12528 states and 35159 transitions. [2022-03-15 14:02:16,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.361702127659575) internal successors, (393), 47 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:16,715 INFO L276 IsEmpty]: Start isEmpty. Operand 12528 states and 35159 transitions. [2022-03-15 14:02:16,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-15 14:02:16,736 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:16,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:16,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-15 14:02:16,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:16,954 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:16,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1704062446, now seen corresponding path program 48 times [2022-03-15 14:02:16,954 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:16,954 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614762591] [2022-03-15 14:02:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:16,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:17,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:17,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:17,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614762591] [2022-03-15 14:02:17,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614762591] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:17,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633349691] [2022-03-15 14:02:17,419 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:02:17,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:17,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:02:17,420 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:02:17,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-15 14:02:17,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-15 14:02:17,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:02:17,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-15 14:02:17,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:02:18,036 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:02:18,136 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:18,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:18,414 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-03-15 14:02:18,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-15 14:02:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:02:18,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:02:19,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:19,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633349691] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 14:02:19,759 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 14:02:19,759 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 9] total 42 [2022-03-15 14:02:19,759 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005734487] [2022-03-15 14:02:19,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 14:02:19,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 14:02:19,759 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:19,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 14:02:19,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1529, Unknown=1, NotChecked=0, Total=1722 [2022-03-15 14:02:19,762 INFO L87 Difference]: Start difference. First operand 12528 states and 35159 transitions. Second operand has 42 states, 42 states have (on average 9.023809523809524) internal successors, (379), 42 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:21,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:21,486 INFO L93 Difference]: Finished difference Result 21625 states and 61020 transitions. [2022-03-15 14:02:21,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:02:21,487 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 9.023809523809524) internal successors, (379), 42 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-03-15 14:02:21,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:21,527 INFO L225 Difference]: With dead ends: 21625 [2022-03-15 14:02:21,527 INFO L226 Difference]: Without dead ends: 21625 [2022-03-15 14:02:21,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 342 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1226, Invalid=4779, Unknown=1, NotChecked=0, Total=6006 [2022-03-15 14:02:21,528 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 2051 mSDsluCounter, 7266 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 7546 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 331 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:21,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2051 Valid, 7546 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2444 Invalid, 0 Unknown, 331 Unchecked, 0.7s Time] [2022-03-15 14:02:21,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21625 states. [2022-03-15 14:02:21,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21625 to 12072. [2022-03-15 14:02:21,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12072 states, 12071 states have (on average 2.828514621820893) internal successors, (34143), 12071 states have internal predecessors, (34143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:21,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12072 states to 12072 states and 34143 transitions. [2022-03-15 14:02:21,807 INFO L78 Accepts]: Start accepts. Automaton has 12072 states and 34143 transitions. Word has length 177 [2022-03-15 14:02:21,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:21,807 INFO L470 AbstractCegarLoop]: Abstraction has 12072 states and 34143 transitions. [2022-03-15 14:02:21,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 9.023809523809524) internal successors, (379), 42 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:21,811 INFO L276 IsEmpty]: Start isEmpty. Operand 12072 states and 34143 transitions. [2022-03-15 14:02:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-03-15 14:02:21,829 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:21,829 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:21,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-15 14:02:22,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2022-03-15 14:02:22,049 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:22,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:22,053 INFO L85 PathProgramCache]: Analyzing trace with hash 151786433, now seen corresponding path program 2 times [2022-03-15 14:02:22,053 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:22,053 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359902333] [2022-03-15 14:02:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:22,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:22,220 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:22,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359902333] [2022-03-15 14:02:22,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359902333] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:22,220 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385309963] [2022-03-15 14:02:22,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:02:22,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:22,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:02:22,222 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:02:22,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-15 14:02:22,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 14:02:22,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:02:22,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 14:02:22,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:02:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-15 14:02:22,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:02:22,952 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385309963] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:22,952 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:02:22,952 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2022-03-15 14:02:22,952 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349986151] [2022-03-15 14:02:22,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:22,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 14:02:22,952 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:22,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 14:02:22,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-03-15 14:02:22,953 INFO L87 Difference]: Start difference. First operand 12072 states and 34143 transitions. Second operand has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:23,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:23,314 INFO L93 Difference]: Finished difference Result 12807 states and 35812 transitions. [2022-03-15 14:02:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 14:02:23,314 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2022-03-15 14:02:23,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:23,335 INFO L225 Difference]: With dead ends: 12807 [2022-03-15 14:02:23,336 INFO L226 Difference]: Without dead ends: 12698 [2022-03-15 14:02:23,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=1311, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 14:02:23,336 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 116 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:23,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1402 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:02:23,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12698 states. [2022-03-15 14:02:23,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12698 to 7124. [2022-03-15 14:02:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7124 states, 7123 states have (on average 2.7558612943984278) internal successors, (19630), 7123 states have internal predecessors, (19630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7124 states to 7124 states and 19630 transitions. [2022-03-15 14:02:23,451 INFO L78 Accepts]: Start accepts. Automaton has 7124 states and 19630 transitions. Word has length 180 [2022-03-15 14:02:23,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:23,451 INFO L470 AbstractCegarLoop]: Abstraction has 7124 states and 19630 transitions. [2022-03-15 14:02:23,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 12 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 7124 states and 19630 transitions. [2022-03-15 14:02:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:23,460 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:23,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:23,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-15 14:02:23,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2022-03-15 14:02:23,662 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:23,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:23,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1442899840, now seen corresponding path program 1 times [2022-03-15 14:02:23,663 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:23,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642629101] [2022-03-15 14:02:23,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:23,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:23,906 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:23,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642629101] [2022-03-15 14:02:23,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642629101] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:23,906 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:23,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:02:23,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003362629] [2022-03-15 14:02:23,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:23,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:02:23,907 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:23,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:02:23,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:02:23,907 INFO L87 Difference]: Start difference. First operand 7124 states and 19630 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:24,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:24,354 INFO L93 Difference]: Finished difference Result 13271 states and 36321 transitions. [2022-03-15 14:02:24,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 14:02:24,354 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:24,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:24,374 INFO L225 Difference]: With dead ends: 13271 [2022-03-15 14:02:24,375 INFO L226 Difference]: Without dead ends: 13271 [2022-03-15 14:02:24,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=287, Invalid=903, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 14:02:24,375 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1050 mSDsluCounter, 3283 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 3534 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:24,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 3534 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:02:24,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13271 states. [2022-03-15 14:02:24,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13271 to 7880. [2022-03-15 14:02:24,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7880 states, 7879 states have (on average 2.7583449676354865) internal successors, (21733), 7879 states have internal predecessors, (21733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7880 states to 7880 states and 21733 transitions. [2022-03-15 14:02:24,508 INFO L78 Accepts]: Start accepts. Automaton has 7880 states and 21733 transitions. Word has length 181 [2022-03-15 14:02:24,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:24,508 INFO L470 AbstractCegarLoop]: Abstraction has 7880 states and 21733 transitions. [2022-03-15 14:02:24,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:24,508 INFO L276 IsEmpty]: Start isEmpty. Operand 7880 states and 21733 transitions. [2022-03-15 14:02:24,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:24,518 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:24,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:24,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-03-15 14:02:24,518 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:24,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:24,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1693882528, now seen corresponding path program 1 times [2022-03-15 14:02:24,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:24,519 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947582825] [2022-03-15 14:02:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:24,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:24,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:24,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947582825] [2022-03-15 14:02:24,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947582825] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:24,567 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:24,567 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:02:24,568 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675813382] [2022-03-15 14:02:24,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:24,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:02:24,568 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:24,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:02:24,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:02:24,568 INFO L87 Difference]: Start difference. First operand 7880 states and 21733 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:24,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:24,660 INFO L93 Difference]: Finished difference Result 10048 states and 27653 transitions. [2022-03-15 14:02:24,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 14:02:24,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:24,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:24,677 INFO L225 Difference]: With dead ends: 10048 [2022-03-15 14:02:24,677 INFO L226 Difference]: Without dead ends: 9991 [2022-03-15 14:02:24,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:02:24,678 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 203 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:24,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1615 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:02:24,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9991 states. [2022-03-15 14:02:24,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9991 to 9164. [2022-03-15 14:02:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9164 states, 9163 states have (on average 2.768852995743752) internal successors, (25371), 9163 states have internal predecessors, (25371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:24,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9164 states to 9164 states and 25371 transitions. [2022-03-15 14:02:24,802 INFO L78 Accepts]: Start accepts. Automaton has 9164 states and 25371 transitions. Word has length 181 [2022-03-15 14:02:24,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:24,803 INFO L470 AbstractCegarLoop]: Abstraction has 9164 states and 25371 transitions. [2022-03-15 14:02:24,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:24,803 INFO L276 IsEmpty]: Start isEmpty. Operand 9164 states and 25371 transitions. [2022-03-15 14:02:24,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:24,815 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:24,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:24,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-03-15 14:02:24,815 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:24,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:24,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1303549216, now seen corresponding path program 2 times [2022-03-15 14:02:24,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:24,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662171786] [2022-03-15 14:02:24,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:24,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:24,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:24,895 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:24,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662171786] [2022-03-15 14:02:24,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662171786] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:24,896 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:24,896 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:02:24,896 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26864383] [2022-03-15 14:02:24,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:24,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:02:24,896 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:24,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:02:24,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:02:24,896 INFO L87 Difference]: Start difference. First operand 9164 states and 25371 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:24,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:24,989 INFO L93 Difference]: Finished difference Result 9959 states and 27465 transitions. [2022-03-15 14:02:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 14:02:24,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:24,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:25,004 INFO L225 Difference]: With dead ends: 9959 [2022-03-15 14:02:25,005 INFO L226 Difference]: Without dead ends: 9902 [2022-03-15 14:02:25,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-03-15 14:02:25,005 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 87 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:25,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 1693 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:02:25,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9902 states. [2022-03-15 14:02:25,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9902 to 9203. [2022-03-15 14:02:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9203 states, 9202 states have (on average 2.768528580743317) internal successors, (25476), 9202 states have internal predecessors, (25476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:25,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9203 states to 9203 states and 25476 transitions. [2022-03-15 14:02:25,127 INFO L78 Accepts]: Start accepts. Automaton has 9203 states and 25476 transitions. Word has length 181 [2022-03-15 14:02:25,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:25,127 INFO L470 AbstractCegarLoop]: Abstraction has 9203 states and 25476 transitions. [2022-03-15 14:02:25,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:25,127 INFO L276 IsEmpty]: Start isEmpty. Operand 9203 states and 25476 transitions. [2022-03-15 14:02:25,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:25,138 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:25,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:25,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2022-03-15 14:02:25,139 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:25,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1045782252, now seen corresponding path program 3 times [2022-03-15 14:02:25,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:25,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657999719] [2022-03-15 14:02:25,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:25,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:25,221 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:25,221 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657999719] [2022-03-15 14:02:25,221 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657999719] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:25,221 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:25,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:02:25,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729753267] [2022-03-15 14:02:25,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:25,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:02:25,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:25,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:02:25,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:02:25,222 INFO L87 Difference]: Start difference. First operand 9203 states and 25476 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:25,364 INFO L93 Difference]: Finished difference Result 9970 states and 27502 transitions. [2022-03-15 14:02:25,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 14:02:25,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:25,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:25,379 INFO L225 Difference]: With dead ends: 9970 [2022-03-15 14:02:25,379 INFO L226 Difference]: Without dead ends: 9913 [2022-03-15 14:02:25,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:02:25,379 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 86 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:25,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 1538 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:02:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9913 states. [2022-03-15 14:02:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9913 to 9203. [2022-03-15 14:02:25,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9203 states, 9202 states have (on average 2.768528580743317) internal successors, (25476), 9202 states have internal predecessors, (25476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:25,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9203 states to 9203 states and 25476 transitions. [2022-03-15 14:02:25,493 INFO L78 Accepts]: Start accepts. Automaton has 9203 states and 25476 transitions. Word has length 181 [2022-03-15 14:02:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:25,493 INFO L470 AbstractCegarLoop]: Abstraction has 9203 states and 25476 transitions. [2022-03-15 14:02:25,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 9203 states and 25476 transitions. [2022-03-15 14:02:25,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:25,504 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:25,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:25,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-03-15 14:02:25,504 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:25,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:25,504 INFO L85 PathProgramCache]: Analyzing trace with hash -964256132, now seen corresponding path program 4 times [2022-03-15 14:02:25,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:25,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021949538] [2022-03-15 14:02:25,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:25,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:25,569 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:25,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021949538] [2022-03-15 14:02:25,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021949538] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:25,569 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:25,569 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:02:25,569 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304850253] [2022-03-15 14:02:25,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:25,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:02:25,569 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:25,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:02:25,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:02:25,569 INFO L87 Difference]: Start difference. First operand 9203 states and 25476 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:25,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:25,757 INFO L93 Difference]: Finished difference Result 11581 states and 31830 transitions. [2022-03-15 14:02:25,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 14:02:25,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:25,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:25,774 INFO L225 Difference]: With dead ends: 11581 [2022-03-15 14:02:25,775 INFO L226 Difference]: Without dead ends: 11524 [2022-03-15 14:02:25,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-03-15 14:02:25,775 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 216 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:25,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 1992 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:02:25,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11524 states. [2022-03-15 14:02:25,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11524 to 10442. [2022-03-15 14:02:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10442 states, 10441 states have (on average 2.763528397663059) internal successors, (28854), 10441 states have internal predecessors, (28854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:25,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10442 states to 10442 states and 28854 transitions. [2022-03-15 14:02:25,928 INFO L78 Accepts]: Start accepts. Automaton has 10442 states and 28854 transitions. Word has length 181 [2022-03-15 14:02:25,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:25,928 INFO L470 AbstractCegarLoop]: Abstraction has 10442 states and 28854 transitions. [2022-03-15 14:02:25,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:25,928 INFO L276 IsEmpty]: Start isEmpty. Operand 10442 states and 28854 transitions. [2022-03-15 14:02:25,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:25,941 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:25,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:25,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-03-15 14:02:25,942 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:25,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:25,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1597101116, now seen corresponding path program 5 times [2022-03-15 14:02:25,942 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:25,942 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021484189] [2022-03-15 14:02:25,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:25,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:26,007 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:26,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021484189] [2022-03-15 14:02:26,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021484189] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:26,007 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:26,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:02:26,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997664647] [2022-03-15 14:02:26,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:26,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:02:26,007 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:26,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:02:26,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:02:26,008 INFO L87 Difference]: Start difference. First operand 10442 states and 28854 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:26,158 INFO L93 Difference]: Finished difference Result 11261 states and 31032 transitions. [2022-03-15 14:02:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 14:02:26,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:26,175 INFO L225 Difference]: With dead ends: 11261 [2022-03-15 14:02:26,175 INFO L226 Difference]: Without dead ends: 11204 [2022-03-15 14:02:26,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:02:26,175 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 104 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:26,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1583 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:02:26,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11204 states. [2022-03-15 14:02:26,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11204 to 10446. [2022-03-15 14:02:26,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10446 states, 10445 states have (on average 2.7635232168501673) internal successors, (28865), 10445 states have internal predecessors, (28865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:26,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10446 states to 10446 states and 28865 transitions. [2022-03-15 14:02:26,314 INFO L78 Accepts]: Start accepts. Automaton has 10446 states and 28865 transitions. Word has length 181 [2022-03-15 14:02:26,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:26,314 INFO L470 AbstractCegarLoop]: Abstraction has 10446 states and 28865 transitions. [2022-03-15 14:02:26,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:26,314 INFO L276 IsEmpty]: Start isEmpty. Operand 10446 states and 28865 transitions. [2022-03-15 14:02:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:26,327 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:26,327 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:26,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-03-15 14:02:26,327 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:26,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:26,327 INFO L85 PathProgramCache]: Analyzing trace with hash 348534712, now seen corresponding path program 6 times [2022-03-15 14:02:26,327 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:26,327 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107570524] [2022-03-15 14:02:26,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:26,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:26,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:26,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:26,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107570524] [2022-03-15 14:02:26,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107570524] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:26,393 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:26,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:02:26,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899596771] [2022-03-15 14:02:26,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:26,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:02:26,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:26,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:02:26,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:02:26,394 INFO L87 Difference]: Start difference. First operand 10446 states and 28865 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:26,523 INFO L93 Difference]: Finished difference Result 11201 states and 30876 transitions. [2022-03-15 14:02:26,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 14:02:26,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:26,540 INFO L225 Difference]: With dead ends: 11201 [2022-03-15 14:02:26,540 INFO L226 Difference]: Without dead ends: 11144 [2022-03-15 14:02:26,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-03-15 14:02:26,540 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 85 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:26,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1363 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:02:26,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11144 states. [2022-03-15 14:02:26,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11144 to 10442. [2022-03-15 14:02:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10442 states, 10441 states have (on average 2.763528397663059) internal successors, (28854), 10441 states have internal predecessors, (28854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:26,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10442 states to 10442 states and 28854 transitions. [2022-03-15 14:02:26,681 INFO L78 Accepts]: Start accepts. Automaton has 10442 states and 28854 transitions. Word has length 181 [2022-03-15 14:02:26,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:26,681 INFO L470 AbstractCegarLoop]: Abstraction has 10442 states and 28854 transitions. [2022-03-15 14:02:26,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 10442 states and 28854 transitions. [2022-03-15 14:02:26,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:26,694 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:26,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:26,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-03-15 14:02:26,694 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:26,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:26,695 INFO L85 PathProgramCache]: Analyzing trace with hash -550249376, now seen corresponding path program 1 times [2022-03-15 14:02:26,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:26,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969031644] [2022-03-15 14:02:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:26,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:26,831 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:26,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969031644] [2022-03-15 14:02:26,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969031644] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:26,831 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:26,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:02:26,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428398077] [2022-03-15 14:02:26,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:26,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:02:26,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:26,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:02:26,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:02:26,832 INFO L87 Difference]: Start difference. First operand 10442 states and 28854 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:26,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:26,977 INFO L93 Difference]: Finished difference Result 11560 states and 31789 transitions. [2022-03-15 14:02:26,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 14:02:26,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:26,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:26,994 INFO L225 Difference]: With dead ends: 11560 [2022-03-15 14:02:26,994 INFO L226 Difference]: Without dead ends: 11509 [2022-03-15 14:02:26,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-03-15 14:02:26,994 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 203 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:26,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1380 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:02:27,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11509 states. [2022-03-15 14:02:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11509 to 10478. [2022-03-15 14:02:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10478 states, 10477 states have (on average 2.7634819127612866) internal successors, (28953), 10477 states have internal predecessors, (28953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:27,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10478 states to 10478 states and 28953 transitions. [2022-03-15 14:02:27,137 INFO L78 Accepts]: Start accepts. Automaton has 10478 states and 28953 transitions. Word has length 181 [2022-03-15 14:02:27,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:27,137 INFO L470 AbstractCegarLoop]: Abstraction has 10478 states and 28953 transitions. [2022-03-15 14:02:27,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 10478 states and 28953 transitions. [2022-03-15 14:02:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:27,150 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:27,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:27,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-03-15 14:02:27,150 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:27,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:27,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1708434304, now seen corresponding path program 1 times [2022-03-15 14:02:27,151 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:27,151 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673403072] [2022-03-15 14:02:27,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:27,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:28,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:28,037 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:28,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673403072] [2022-03-15 14:02:28,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673403072] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:28,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436029128] [2022-03-15 14:02:28,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:28,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:28,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:02:28,039 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:02:28,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-15 14:02:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:28,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-15 14:02:28,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:02:28,435 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:28,551 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:02:28,800 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:02:28,801 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:02:28,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:29,109 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:29,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:29,829 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-15 14:02:29,829 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-15 14:02:29,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:29,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:02:30,710 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_5080 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5080))) (let ((.cse4 (select .cse7 ~get2~0.base)) (.cse5 (select .cse7 c_~get1~0.base)) (.cse6 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse3 (select .cse5 (+ c_~get1~0.offset .cse6))) (.cse2 (select .cse4 (+ c_~get2~0.offset .cse6))) (.cse1 (select .cse5 c_~get1~0.offset)) (.cse0 (select .cse4 c_~get2~0.offset))) (or (< .cse0 .cse1) (= .cse2 .cse3) (<= (+ .cse3 1) .cse2) (= .cse1 .cse0)))))) is different from false [2022-03-15 14:02:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:30,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436029128] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:30,847 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:02:30,847 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [35, 30] total 74 [2022-03-15 14:02:30,847 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618878412] [2022-03-15 14:02:30,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:30,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 14:02:30,848 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:30,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 14:02:30,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=4918, Unknown=1, NotChecked=142, Total=5402 [2022-03-15 14:02:30,849 INFO L87 Difference]: Start difference. First operand 10478 states and 28953 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:32,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:32,376 INFO L93 Difference]: Finished difference Result 14022 states and 38544 transitions. [2022-03-15 14:02:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 14:02:32,376 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:32,399 INFO L225 Difference]: With dead ends: 14022 [2022-03-15 14:02:32,399 INFO L226 Difference]: Without dead ends: 14022 [2022-03-15 14:02:32,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 322 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=481, Invalid=6494, Unknown=1, NotChecked=164, Total=7140 [2022-03-15 14:02:32,400 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 486 mSDsluCounter, 3875 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 4227 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 916 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:32,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 4227 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 834 Invalid, 0 Unknown, 916 Unchecked, 0.4s Time] [2022-03-15 14:02:32,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14022 states. [2022-03-15 14:02:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14022 to 10978. [2022-03-15 14:02:32,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10978 states, 10977 states have (on average 2.7604081260818076) internal successors, (30301), 10977 states have internal predecessors, (30301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10978 states to 10978 states and 30301 transitions. [2022-03-15 14:02:32,563 INFO L78 Accepts]: Start accepts. Automaton has 10978 states and 30301 transitions. Word has length 181 [2022-03-15 14:02:32,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:32,563 INFO L470 AbstractCegarLoop]: Abstraction has 10978 states and 30301 transitions. [2022-03-15 14:02:32,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:32,563 INFO L276 IsEmpty]: Start isEmpty. Operand 10978 states and 30301 transitions. [2022-03-15 14:02:32,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:32,577 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:32,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:32,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-15 14:02:32,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:32,793 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:32,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:32,793 INFO L85 PathProgramCache]: Analyzing trace with hash -287180576, now seen corresponding path program 2 times [2022-03-15 14:02:32,794 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:32,794 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434658263] [2022-03-15 14:02:32,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:32,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:32,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:32,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434658263] [2022-03-15 14:02:32,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434658263] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:32,870 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:32,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:02:32,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730437400] [2022-03-15 14:02:32,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:32,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:02:32,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:32,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:02:32,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:02:32,870 INFO L87 Difference]: Start difference. First operand 10978 states and 30301 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:33,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:33,023 INFO L93 Difference]: Finished difference Result 11868 states and 32660 transitions. [2022-03-15 14:02:33,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 14:02:33,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:33,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:33,042 INFO L225 Difference]: With dead ends: 11868 [2022-03-15 14:02:33,042 INFO L226 Difference]: Without dead ends: 11817 [2022-03-15 14:02:33,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-03-15 14:02:33,042 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 87 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:33,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 1713 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:02:33,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11817 states. [2022-03-15 14:02:33,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11817 to 10982. [2022-03-15 14:02:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10982 states, 10981 states have (on average 2.76040433476004) internal successors, (30312), 10981 states have internal predecessors, (30312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:33,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10982 states to 10982 states and 30312 transitions. [2022-03-15 14:02:33,198 INFO L78 Accepts]: Start accepts. Automaton has 10982 states and 30312 transitions. Word has length 181 [2022-03-15 14:02:33,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:33,199 INFO L470 AbstractCegarLoop]: Abstraction has 10982 states and 30312 transitions. [2022-03-15 14:02:33,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:33,199 INFO L276 IsEmpty]: Start isEmpty. Operand 10982 states and 30312 transitions. [2022-03-15 14:02:33,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:33,212 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:33,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:33,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-03-15 14:02:33,213 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:33,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:33,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1658455252, now seen corresponding path program 3 times [2022-03-15 14:02:33,213 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:33,213 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308698572] [2022-03-15 14:02:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:33,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:33,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:33,277 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308698572] [2022-03-15 14:02:33,277 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308698572] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:33,277 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:33,277 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:02:33,277 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890413030] [2022-03-15 14:02:33,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:33,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:02:33,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:33,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:02:33,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:02:33,278 INFO L87 Difference]: Start difference. First operand 10982 states and 30312 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:33,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:33,432 INFO L93 Difference]: Finished difference Result 11879 states and 32697 transitions. [2022-03-15 14:02:33,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 14:02:33,433 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:33,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:33,451 INFO L225 Difference]: With dead ends: 11879 [2022-03-15 14:02:33,451 INFO L226 Difference]: Without dead ends: 11828 [2022-03-15 14:02:33,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:02:33,451 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 83 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:33,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 1767 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:02:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11828 states. [2022-03-15 14:02:33,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11828 to 10978. [2022-03-15 14:02:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10978 states, 10977 states have (on average 2.7604081260818076) internal successors, (30301), 10977 states have internal predecessors, (30301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10978 states to 10978 states and 30301 transitions. [2022-03-15 14:02:33,613 INFO L78 Accepts]: Start accepts. Automaton has 10978 states and 30301 transitions. Word has length 181 [2022-03-15 14:02:33,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:33,613 INFO L470 AbstractCegarLoop]: Abstraction has 10978 states and 30301 transitions. [2022-03-15 14:02:33,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 10978 states and 30301 transitions. [2022-03-15 14:02:33,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:33,628 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:33,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:33,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2022-03-15 14:02:33,629 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:33,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:33,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1851109188, now seen corresponding path program 4 times [2022-03-15 14:02:33,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:33,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574803873] [2022-03-15 14:02:33,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:33,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:33,696 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:33,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574803873] [2022-03-15 14:02:33,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574803873] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:33,696 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:33,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:02:33,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204845874] [2022-03-15 14:02:33,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:33,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:02:33,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:33,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:02:33,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:02:33,697 INFO L87 Difference]: Start difference. First operand 10978 states and 30301 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:33,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:33,830 INFO L93 Difference]: Finished difference Result 12390 states and 34035 transitions. [2022-03-15 14:02:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 14:02:33,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:33,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:33,851 INFO L225 Difference]: With dead ends: 12390 [2022-03-15 14:02:33,851 INFO L226 Difference]: Without dead ends: 12339 [2022-03-15 14:02:33,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-03-15 14:02:33,851 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 209 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:33,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 1294 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 14:02:33,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12339 states. [2022-03-15 14:02:33,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12339 to 11017. [2022-03-15 14:02:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11017 states, 11016 states have (on average 2.760167029774873) internal successors, (30406), 11016 states have internal predecessors, (30406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11017 states to 11017 states and 30406 transitions. [2022-03-15 14:02:34,009 INFO L78 Accepts]: Start accepts. Automaton has 11017 states and 30406 transitions. Word has length 181 [2022-03-15 14:02:34,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:34,010 INFO L470 AbstractCegarLoop]: Abstraction has 11017 states and 30406 transitions. [2022-03-15 14:02:34,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 11017 states and 30406 transitions. [2022-03-15 14:02:34,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:34,023 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:34,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:34,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-03-15 14:02:34,023 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:34,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:34,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2074947418, now seen corresponding path program 5 times [2022-03-15 14:02:34,024 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:34,024 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031891724] [2022-03-15 14:02:34,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:34,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:34,091 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:34,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031891724] [2022-03-15 14:02:34,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031891724] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:34,092 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:34,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:02:34,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570869707] [2022-03-15 14:02:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:34,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:02:34,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:34,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:02:34,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:02:34,092 INFO L87 Difference]: Start difference. First operand 11017 states and 30406 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:34,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:34,238 INFO L93 Difference]: Finished difference Result 11958 states and 32930 transitions. [2022-03-15 14:02:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 14:02:34,238 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:34,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:34,257 INFO L225 Difference]: With dead ends: 11958 [2022-03-15 14:02:34,257 INFO L226 Difference]: Without dead ends: 11907 [2022-03-15 14:02:34,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:02:34,257 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 103 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:34,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 1569 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:02:34,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11907 states. [2022-03-15 14:02:34,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11907 to 11021. [2022-03-15 14:02:34,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11021 states, 11020 states have (on average 2.76016333938294) internal successors, (30417), 11020 states have internal predecessors, (30417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11021 states to 11021 states and 30417 transitions. [2022-03-15 14:02:34,407 INFO L78 Accepts]: Start accepts. Automaton has 11021 states and 30417 transitions. Word has length 181 [2022-03-15 14:02:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:34,408 INFO L470 AbstractCegarLoop]: Abstraction has 11021 states and 30417 transitions. [2022-03-15 14:02:34,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:34,408 INFO L276 IsEmpty]: Start isEmpty. Operand 11021 states and 30417 transitions. [2022-03-15 14:02:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:34,422 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:34,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:34,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-03-15 14:02:34,422 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:34,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:34,422 INFO L85 PathProgramCache]: Analyzing trace with hash -129311590, now seen corresponding path program 6 times [2022-03-15 14:02:34,422 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:34,422 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733104128] [2022-03-15 14:02:34,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:34,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:34,485 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:34,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733104128] [2022-03-15 14:02:34,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733104128] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:34,485 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:34,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-15 14:02:34,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653186278] [2022-03-15 14:02:34,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:34,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 14:02:34,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:34,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 14:02:34,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-03-15 14:02:34,486 INFO L87 Difference]: Start difference. First operand 11021 states and 30417 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:34,632 INFO L93 Difference]: Finished difference Result 11898 states and 32774 transitions. [2022-03-15 14:02:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 14:02:34,632 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:34,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:34,651 INFO L225 Difference]: With dead ends: 11898 [2022-03-15 14:02:34,651 INFO L226 Difference]: Without dead ends: 11847 [2022-03-15 14:02:34,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-03-15 14:02:34,651 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 86 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:34,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 1757 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 14:02:34,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11847 states. [2022-03-15 14:02:34,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11847 to 11017. [2022-03-15 14:02:34,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11017 states, 11016 states have (on average 2.760167029774873) internal successors, (30406), 11016 states have internal predecessors, (30406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11017 states to 11017 states and 30406 transitions. [2022-03-15 14:02:34,801 INFO L78 Accepts]: Start accepts. Automaton has 11017 states and 30406 transitions. Word has length 181 [2022-03-15 14:02:34,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:34,801 INFO L470 AbstractCegarLoop]: Abstraction has 11017 states and 30406 transitions. [2022-03-15 14:02:34,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:34,801 INFO L276 IsEmpty]: Start isEmpty. Operand 11017 states and 30406 transitions. [2022-03-15 14:02:34,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:34,814 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:34,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:34,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-03-15 14:02:34,815 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:34,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:34,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1830773360, now seen corresponding path program 2 times [2022-03-15 14:02:34,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:34,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434133424] [2022-03-15 14:02:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:34,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:35,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:35,712 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:35,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434133424] [2022-03-15 14:02:35,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434133424] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:35,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238254094] [2022-03-15 14:02:35,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:02:35,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:35,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:02:35,713 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:02:35,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-15 14:02:35,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 14:02:35,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:02:35,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-15 14:02:35,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:02:36,967 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:02:36,967 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2022-03-15 14:02:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:37,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:02:37,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238254094] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:37,011 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:02:37,011 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [30] total 47 [2022-03-15 14:02:37,011 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958562304] [2022-03-15 14:02:37,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:37,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 14:02:37,011 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 14:02:37,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1943, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 14:02:37,012 INFO L87 Difference]: Start difference. First operand 11017 states and 30406 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:38,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:38,824 INFO L93 Difference]: Finished difference Result 19100 states and 52356 transitions. [2022-03-15 14:02:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:02:38,824 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:38,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:38,855 INFO L225 Difference]: With dead ends: 19100 [2022-03-15 14:02:38,856 INFO L226 Difference]: Without dead ends: 19100 [2022-03-15 14:02:38,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1766 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=927, Invalid=5715, Unknown=0, NotChecked=0, Total=6642 [2022-03-15 14:02:38,857 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 1269 mSDsluCounter, 5067 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 5406 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 251 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:38,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1269 Valid, 5406 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1480 Invalid, 0 Unknown, 251 Unchecked, 0.6s Time] [2022-03-15 14:02:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19100 states. [2022-03-15 14:02:39,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19100 to 11360. [2022-03-15 14:02:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11360 states, 11359 states have (on average 2.7644158816797253) internal successors, (31401), 11359 states have internal predecessors, (31401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11360 states to 11360 states and 31401 transitions. [2022-03-15 14:02:39,057 INFO L78 Accepts]: Start accepts. Automaton has 11360 states and 31401 transitions. Word has length 181 [2022-03-15 14:02:39,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:39,057 INFO L470 AbstractCegarLoop]: Abstraction has 11360 states and 31401 transitions. [2022-03-15 14:02:39,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:39,058 INFO L276 IsEmpty]: Start isEmpty. Operand 11360 states and 31401 transitions. [2022-03-15 14:02:39,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:39,071 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:39,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:39,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-15 14:02:39,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable270 [2022-03-15 14:02:39,283 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:39,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:39,284 INFO L85 PathProgramCache]: Analyzing trace with hash -909661620, now seen corresponding path program 2 times [2022-03-15 14:02:39,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:39,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646145022] [2022-03-15 14:02:39,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:39,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:39,525 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:39,525 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646145022] [2022-03-15 14:02:39,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646145022] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:39,525 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:39,525 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:02:39,525 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217979570] [2022-03-15 14:02:39,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:39,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:02:39,525 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:39,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:02:39,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:02:39,526 INFO L87 Difference]: Start difference. First operand 11360 states and 31401 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:40,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:40,030 INFO L93 Difference]: Finished difference Result 18016 states and 49747 transitions. [2022-03-15 14:02:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 14:02:40,031 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:40,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:40,059 INFO L225 Difference]: With dead ends: 18016 [2022-03-15 14:02:40,060 INFO L226 Difference]: Without dead ends: 18016 [2022-03-15 14:02:40,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:02:40,060 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 1093 mSDsluCounter, 2960 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 3217 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:40,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 3217 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:02:40,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18016 states. [2022-03-15 14:02:40,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18016 to 11364. [2022-03-15 14:02:40,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11364 states, 11363 states have (on average 2.764762826718296) internal successors, (31416), 11363 states have internal predecessors, (31416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:40,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11364 states to 11364 states and 31416 transitions. [2022-03-15 14:02:40,259 INFO L78 Accepts]: Start accepts. Automaton has 11364 states and 31416 transitions. Word has length 181 [2022-03-15 14:02:40,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:40,260 INFO L470 AbstractCegarLoop]: Abstraction has 11364 states and 31416 transitions. [2022-03-15 14:02:40,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 11364 states and 31416 transitions. [2022-03-15 14:02:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:40,274 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:40,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:40,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2022-03-15 14:02:40,274 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:40,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:40,274 INFO L85 PathProgramCache]: Analyzing trace with hash 185790988, now seen corresponding path program 3 times [2022-03-15 14:02:40,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:40,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000462456] [2022-03-15 14:02:40,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:40,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:41,161 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:41,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000462456] [2022-03-15 14:02:41,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000462456] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:41,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725242376] [2022-03-15 14:02:41,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:02:41,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:41,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:02:41,162 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:02:41,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-15 14:02:41,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-15 14:02:41,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:02:41,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-15 14:02:41,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:02:42,419 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:02:42,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2022-03-15 14:02:42,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:42,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:02:42,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725242376] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:42,461 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:02:42,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [30] total 48 [2022-03-15 14:02:42,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281278670] [2022-03-15 14:02:42,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:42,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 14:02:42,461 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:42,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 14:02:42,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:02:42,461 INFO L87 Difference]: Start difference. First operand 11364 states and 31416 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:43,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:43,553 INFO L93 Difference]: Finished difference Result 17980 states and 49566 transitions. [2022-03-15 14:02:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:02:43,553 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:43,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:43,580 INFO L225 Difference]: With dead ends: 17980 [2022-03-15 14:02:43,581 INFO L226 Difference]: Without dead ends: 17980 [2022-03-15 14:02:43,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=718, Invalid=4982, Unknown=0, NotChecked=0, Total=5700 [2022-03-15 14:02:43,582 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 1571 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 4486 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:43,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 4486 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1145 Invalid, 0 Unknown, 242 Unchecked, 0.4s Time] [2022-03-15 14:02:43,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17980 states. [2022-03-15 14:02:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17980 to 11365. [2022-03-15 14:02:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11365 states, 11364 states have (on average 2.7647835269271384) internal successors, (31419), 11364 states have internal predecessors, (31419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:43,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11365 states to 11365 states and 31419 transitions. [2022-03-15 14:02:43,770 INFO L78 Accepts]: Start accepts. Automaton has 11365 states and 31419 transitions. Word has length 181 [2022-03-15 14:02:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:43,770 INFO L470 AbstractCegarLoop]: Abstraction has 11365 states and 31419 transitions. [2022-03-15 14:02:43,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:43,770 INFO L276 IsEmpty]: Start isEmpty. Operand 11365 states and 31419 transitions. [2022-03-15 14:02:43,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:43,783 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:43,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:43,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-03-15 14:02:44,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:44,001 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:44,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:44,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1218567710, now seen corresponding path program 3 times [2022-03-15 14:02:44,002 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:44,002 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678240334] [2022-03-15 14:02:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:44,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:44,228 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:44,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678240334] [2022-03-15 14:02:44,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678240334] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:02:44,228 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:02:44,228 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:02:44,228 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27126942] [2022-03-15 14:02:44,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:44,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:02:44,228 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:44,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:02:44,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:02:44,229 INFO L87 Difference]: Start difference. First operand 11365 states and 31419 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:02:44,805 INFO L93 Difference]: Finished difference Result 17744 states and 48934 transitions. [2022-03-15 14:02:44,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 14:02:44,805 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:02:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:02:44,833 INFO L225 Difference]: With dead ends: 17744 [2022-03-15 14:02:44,834 INFO L226 Difference]: Without dead ends: 17744 [2022-03-15 14:02:44,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:02:44,834 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 1312 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:02:44,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 2905 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:02:44,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17744 states. [2022-03-15 14:02:44,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17744 to 11431. [2022-03-15 14:02:45,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11431 states, 11430 states have (on average 2.7646544181977255) internal successors, (31600), 11430 states have internal predecessors, (31600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11431 states to 11431 states and 31600 transitions. [2022-03-15 14:02:45,027 INFO L78 Accepts]: Start accepts. Automaton has 11431 states and 31600 transitions. Word has length 181 [2022-03-15 14:02:45,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:02:45,028 INFO L470 AbstractCegarLoop]: Abstraction has 11431 states and 31600 transitions. [2022-03-15 14:02:45,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:02:45,028 INFO L276 IsEmpty]: Start isEmpty. Operand 11431 states and 31600 transitions. [2022-03-15 14:02:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:02:45,041 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:02:45,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:02:45,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-03-15 14:02:45,042 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:02:45,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:02:45,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2143595328, now seen corresponding path program 4 times [2022-03-15 14:02:45,042 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:02:45,042 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80152018] [2022-03-15 14:02:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:02:45,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:02:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:02:45,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:02:45,645 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:02:45,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80152018] [2022-03-15 14:02:45,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80152018] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:45,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189639531] [2022-03-15 14:02:45,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:02:45,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:02:45,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:02:45,647 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:02:45,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-15 14:02:45,939 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:02:45,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:02:45,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-15 14:02:45,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:02:46,396 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:02:46,542 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:46,640 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:02:47,154 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-15 14:02:47,154 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2022-03-15 14:02:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:02:47,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:02:56,992 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_5292 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5292))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse4 (select .cse7 ~get1~0.base)) (.cse6 (select .cse7 c_~get2~0.base))) (let ((.cse0 (select .cse6 c_~get2~0.offset)) (.cse1 (select .cse4 c_~get1~0.offset)) (.cse3 (select .cse6 (+ c_~get2~0.offset .cse5))) (.cse2 (select .cse4 (+ c_~get1~0.offset .cse5)))) (or (<= (+ .cse0 1) .cse1) (< .cse2 .cse3) (= .cse0 .cse1) (= .cse3 .cse2)))))) is different from false [2022-03-15 14:02:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:02:57,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189639531] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:02:57,134 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:02:57,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [28, 29] total 65 [2022-03-15 14:02:57,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884144142] [2022-03-15 14:02:57,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:02:57,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 14:02:57,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:02:57,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 14:02:57,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=3734, Unknown=15, NotChecked=124, Total=4160 [2022-03-15 14:02:57,135 INFO L87 Difference]: Start difference. First operand 11431 states and 31600 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:12,074 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((~get1~0.base Int) (v_ArrVal_5292 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5292))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse4 (select .cse7 ~get1~0.base)) (.cse6 (select .cse7 c_~get2~0.base))) (let ((.cse0 (select .cse6 c_~get2~0.offset)) (.cse1 (select .cse4 c_~get1~0.offset)) (.cse3 (select .cse6 (+ c_~get2~0.offset .cse5))) (.cse2 (select .cse4 (+ c_~get1~0.offset .cse5)))) (or (<= (+ .cse0 1) .cse1) (< .cse2 .cse3) (= .cse0 .cse1) (= .cse3 .cse2)))))) (<= (+ |c_thread2Thread1of1ForFork1_#t~mem11| 1) |c_thread2Thread1of1ForFork1_#t~mem12|)) is different from false [2022-03-15 14:03:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:13,372 INFO L93 Difference]: Finished difference Result 16406 states and 45135 transitions. [2022-03-15 14:03:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 14:03:13,372 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:03:13,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:13,402 INFO L225 Difference]: With dead ends: 16406 [2022-03-15 14:03:13,402 INFO L226 Difference]: Without dead ends: 16406 [2022-03-15 14:03:13,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 323 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1567 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=448, Invalid=5535, Unknown=31, NotChecked=306, Total=6320 [2022-03-15 14:03:13,403 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 347 mSDsluCounter, 4557 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 4913 SdHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1202 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:13,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 4913 Invalid, 2101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 892 Invalid, 0 Unknown, 1202 Unchecked, 0.5s Time] [2022-03-15 14:03:13,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16406 states. [2022-03-15 14:03:13,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16406 to 11528. [2022-03-15 14:03:13,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11528 states, 11527 states have (on average 2.7663745987681096) internal successors, (31888), 11527 states have internal predecessors, (31888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11528 states to 11528 states and 31888 transitions. [2022-03-15 14:03:13,620 INFO L78 Accepts]: Start accepts. Automaton has 11528 states and 31888 transitions. Word has length 181 [2022-03-15 14:03:13,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:13,621 INFO L470 AbstractCegarLoop]: Abstraction has 11528 states and 31888 transitions. [2022-03-15 14:03:13,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:13,621 INFO L276 IsEmpty]: Start isEmpty. Operand 11528 states and 31888 transitions. [2022-03-15 14:03:13,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:03:13,637 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:13,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:13,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-15 14:03:13,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:13,855 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:03:13,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1767032008, now seen corresponding path program 4 times [2022-03-15 14:03:13,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:13,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229582105] [2022-03-15 14:03:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:13,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:14,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:03:14,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:14,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229582105] [2022-03-15 14:03:14,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229582105] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:03:14,080 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:03:14,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:03:14,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592027868] [2022-03-15 14:03:14,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:14,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:03:14,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:14,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:03:14,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:03:14,081 INFO L87 Difference]: Start difference. First operand 11528 states and 31888 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:14,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:14,622 INFO L93 Difference]: Finished difference Result 17739 states and 48952 transitions. [2022-03-15 14:03:14,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 14:03:14,622 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:03:14,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:14,652 INFO L225 Difference]: With dead ends: 17739 [2022-03-15 14:03:14,653 INFO L226 Difference]: Without dead ends: 17739 [2022-03-15 14:03:14,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:03:14,653 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 1289 mSDsluCounter, 2455 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:14,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1289 Valid, 2710 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:03:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17739 states. [2022-03-15 14:03:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17739 to 11528. [2022-03-15 14:03:14,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11528 states, 11527 states have (on average 2.7663745987681096) internal successors, (31888), 11527 states have internal predecessors, (31888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:14,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11528 states to 11528 states and 31888 transitions. [2022-03-15 14:03:14,862 INFO L78 Accepts]: Start accepts. Automaton has 11528 states and 31888 transitions. Word has length 181 [2022-03-15 14:03:14,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:14,862 INFO L470 AbstractCegarLoop]: Abstraction has 11528 states and 31888 transitions. [2022-03-15 14:03:14,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:14,863 INFO L276 IsEmpty]: Start isEmpty. Operand 11528 states and 31888 transitions. [2022-03-15 14:03:14,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:03:14,878 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:14,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:14,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2022-03-15 14:03:14,878 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:03:14,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:14,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1166049066, now seen corresponding path program 5 times [2022-03-15 14:03:14,879 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:14,879 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909941209] [2022-03-15 14:03:14,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:14,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:15,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:15,809 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:15,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909941209] [2022-03-15 14:03:15,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909941209] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:15,810 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985187718] [2022-03-15 14:03:15,810 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:03:15,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:15,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:15,811 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:15,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-15 14:03:16,121 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:03:16,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:03:16,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 80 conjunts are in the unsatisfiable core [2022-03-15 14:03:16,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:16,150 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:03:16,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:03:16,367 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-03-15 14:03:16,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:03:16,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:03:16,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 14:03:16,931 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:03:16,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2022-03-15 14:03:17,073 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:03:17,279 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:03:17,394 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:03:17,903 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:03:17,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 28 [2022-03-15 14:03:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:17,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:03:18,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:03:18,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985187718] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:18,666 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:03:18,666 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [32, 30] total 70 [2022-03-15 14:03:18,666 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764387241] [2022-03-15 14:03:18,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:18,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 14:03:18,667 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:18,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 14:03:18,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=4451, Unknown=15, NotChecked=0, Total=4830 [2022-03-15 14:03:18,668 INFO L87 Difference]: Start difference. First operand 11528 states and 31888 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:21,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:21,261 INFO L93 Difference]: Finished difference Result 20562 states and 56551 transitions. [2022-03-15 14:03:21,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 14:03:21,262 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:03:21,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:21,299 INFO L225 Difference]: With dead ends: 20562 [2022-03-15 14:03:21,299 INFO L226 Difference]: Without dead ends: 20562 [2022-03-15 14:03:21,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 329 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3874 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=957, Invalid=10561, Unknown=38, NotChecked=0, Total=11556 [2022-03-15 14:03:21,301 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 1287 mSDsluCounter, 5056 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 5480 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:21,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1287 Valid, 5480 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1686 Invalid, 0 Unknown, 271 Unchecked, 0.9s Time] [2022-03-15 14:03:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20562 states. [2022-03-15 14:03:21,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20562 to 11606. [2022-03-15 14:03:21,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11606 states, 11605 states have (on average 2.7696682464454976) internal successors, (32142), 11605 states have internal predecessors, (32142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11606 states to 11606 states and 32142 transitions. [2022-03-15 14:03:21,533 INFO L78 Accepts]: Start accepts. Automaton has 11606 states and 32142 transitions. Word has length 181 [2022-03-15 14:03:21,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:21,533 INFO L470 AbstractCegarLoop]: Abstraction has 11606 states and 32142 transitions. [2022-03-15 14:03:21,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:21,534 INFO L276 IsEmpty]: Start isEmpty. Operand 11606 states and 32142 transitions. [2022-03-15 14:03:21,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:03:21,548 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:21,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:21,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-15 14:03:21,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable276 [2022-03-15 14:03:21,761 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:03:21,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:21,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1932642920, now seen corresponding path program 6 times [2022-03-15 14:03:21,762 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:21,762 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105465707] [2022-03-15 14:03:21,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:21,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:22,478 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:22,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105465707] [2022-03-15 14:03:22,478 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105465707] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:22,478 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266835275] [2022-03-15 14:03:22,479 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:03:22,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:22,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:22,509 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:22,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-15 14:03:22,774 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-03-15 14:03:22,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:03:22,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 14:03:22,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:23,596 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:03:23,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-03-15 14:03:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:03:23,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:03:23,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266835275] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:03:23,691 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:03:23,691 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [28] total 44 [2022-03-15 14:03:23,691 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127555013] [2022-03-15 14:03:23,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:23,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 14:03:23,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:23,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 14:03:23,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1717, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 14:03:23,692 INFO L87 Difference]: Start difference. First operand 11606 states and 32142 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:25,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:25,134 INFO L93 Difference]: Finished difference Result 18466 states and 50913 transitions. [2022-03-15 14:03:25,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 14:03:25,135 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:03:25,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:25,165 INFO L225 Difference]: With dead ends: 18466 [2022-03-15 14:03:25,165 INFO L226 Difference]: Without dead ends: 18466 [2022-03-15 14:03:25,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=642, Invalid=4328, Unknown=0, NotChecked=0, Total=4970 [2022-03-15 14:03:25,166 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 1315 mSDsluCounter, 3961 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 4270 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 200 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:25,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1315 Valid, 4270 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1224 Invalid, 0 Unknown, 200 Unchecked, 0.5s Time] [2022-03-15 14:03:25,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18466 states. [2022-03-15 14:03:25,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18466 to 11592. [2022-03-15 14:03:25,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11592 states, 11591 states have (on average 2.7693037701665086) internal successors, (32099), 11591 states have internal predecessors, (32099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11592 states to 11592 states and 32099 transitions. [2022-03-15 14:03:25,457 INFO L78 Accepts]: Start accepts. Automaton has 11592 states and 32099 transitions. Word has length 181 [2022-03-15 14:03:25,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:25,457 INFO L470 AbstractCegarLoop]: Abstraction has 11592 states and 32099 transitions. [2022-03-15 14:03:25,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 11592 states and 32099 transitions. [2022-03-15 14:03:25,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:03:25,472 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:25,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:25,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-03-15 14:03:25,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable277 [2022-03-15 14:03:25,690 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:03:25,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:25,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1377001474, now seen corresponding path program 7 times [2022-03-15 14:03:25,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:25,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262365323] [2022-03-15 14:03:25,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:25,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:27,228 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:27,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262365323] [2022-03-15 14:03:27,228 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262365323] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:27,228 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216002240] [2022-03-15 14:03:27,228 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:03:27,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:27,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:27,234 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:27,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-15 14:03:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:27,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-15 14:03:27,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:27,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:03:27,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:03:28,045 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:03:28,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:03:28,164 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:03:28,378 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:03:28,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:03:29,154 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-15 14:03:29,155 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2022-03-15 14:03:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:29,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:03:30,179 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_5418 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5418))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 c_~get1~0.base)) (.cse4 (select .cse7 ~get2~0.base))) (let ((.cse1 (select .cse4 c_~get2~0.offset)) (.cse0 (select .cse6 c_~get1~0.offset)) (.cse2 (select .cse6 (+ c_~get1~0.offset .cse5))) (.cse3 (select .cse4 (+ c_~get2~0.offset .cse5)))) (or (= .cse0 .cse1) (< .cse1 .cse0) (= .cse2 .cse3) (<= (+ .cse2 1) .cse3)))))) is different from false [2022-03-15 14:03:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:03:30,316 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216002240] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:30,316 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:03:30,316 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [38, 30] total 76 [2022-03-15 14:03:30,316 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852828847] [2022-03-15 14:03:30,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:30,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 14:03:30,316 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:30,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 14:03:30,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=5209, Unknown=1, NotChecked=146, Total=5700 [2022-03-15 14:03:30,317 INFO L87 Difference]: Start difference. First operand 11592 states and 32099 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:31,531 WARN L838 $PredicateComparison]: unable to prove that (and (or (< |c_thread2Thread1of1ForFork1_#t~mem11| |c_thread2Thread1of1ForFork1_#t~mem12|) (<= (+ |c_thread1Thread1of1ForFork0_#t~mem4| 1) |c_thread1Thread1of1ForFork0_#t~mem5|)) (forall ((~get2~0.base Int) (v_ArrVal_5418 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5418))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 c_~get1~0.base)) (.cse4 (select .cse7 ~get2~0.base))) (let ((.cse1 (select .cse4 c_~get2~0.offset)) (.cse0 (select .cse6 c_~get1~0.offset)) (.cse2 (select .cse6 (+ c_~get1~0.offset .cse5))) (.cse3 (select .cse4 (+ c_~get2~0.offset .cse5)))) (or (= .cse0 .cse1) (< .cse1 .cse0) (= .cse2 .cse3) (<= (+ .cse2 1) .cse3))))))) is different from false [2022-03-15 14:03:32,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:32,732 INFO L93 Difference]: Finished difference Result 17995 states and 49489 transitions. [2022-03-15 14:03:32,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 14:03:32,733 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:03:32,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:32,771 INFO L225 Difference]: With dead ends: 17995 [2022-03-15 14:03:32,771 INFO L226 Difference]: Without dead ends: 17995 [2022-03-15 14:03:32,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 323 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=678, Invalid=9228, Unknown=2, NotChecked=394, Total=10302 [2022-03-15 14:03:32,773 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 621 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 4915 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1415 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:32,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 4915 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1270 Invalid, 0 Unknown, 1415 Unchecked, 0.6s Time] [2022-03-15 14:03:32,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17995 states. [2022-03-15 14:03:32,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17995 to 11618. [2022-03-15 14:03:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11618 states, 11617 states have (on average 2.768959283808212) internal successors, (32167), 11617 states have internal predecessors, (32167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:33,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11618 states to 11618 states and 32167 transitions. [2022-03-15 14:03:33,021 INFO L78 Accepts]: Start accepts. Automaton has 11618 states and 32167 transitions. Word has length 181 [2022-03-15 14:03:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:33,021 INFO L470 AbstractCegarLoop]: Abstraction has 11618 states and 32167 transitions. [2022-03-15 14:03:33,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:33,021 INFO L276 IsEmpty]: Start isEmpty. Operand 11618 states and 32167 transitions. [2022-03-15 14:03:33,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:03:33,036 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:33,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:33,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-03-15 14:03:33,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:33,257 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:03:33,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1633556068, now seen corresponding path program 5 times [2022-03-15 14:03:33,258 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:33,258 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626115163] [2022-03-15 14:03:33,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:33,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:33,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:03:33,550 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:33,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626115163] [2022-03-15 14:03:33,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626115163] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:03:33,550 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:03:33,550 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:03:33,550 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863955635] [2022-03-15 14:03:33,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:33,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:03:33,550 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:33,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:03:33,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:03:33,551 INFO L87 Difference]: Start difference. First operand 11618 states and 32167 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:34,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:34,120 INFO L93 Difference]: Finished difference Result 18396 states and 50863 transitions. [2022-03-15 14:03:34,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 14:03:34,121 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:03:34,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:34,151 INFO L225 Difference]: With dead ends: 18396 [2022-03-15 14:03:34,151 INFO L226 Difference]: Without dead ends: 18396 [2022-03-15 14:03:34,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=264, Invalid=858, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:03:34,152 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 930 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 2811 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:34,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [930 Valid, 2811 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:03:34,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18396 states. [2022-03-15 14:03:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18396 to 11626. [2022-03-15 14:03:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11626 states, 11625 states have (on average 2.769290322580645) internal successors, (32193), 11625 states have internal predecessors, (32193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:34,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11626 states to 11626 states and 32193 transitions. [2022-03-15 14:03:34,377 INFO L78 Accepts]: Start accepts. Automaton has 11626 states and 32193 transitions. Word has length 181 [2022-03-15 14:03:34,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:34,377 INFO L470 AbstractCegarLoop]: Abstraction has 11626 states and 32193 transitions. [2022-03-15 14:03:34,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:34,377 INFO L276 IsEmpty]: Start isEmpty. Operand 11626 states and 32193 transitions. [2022-03-15 14:03:34,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:03:34,393 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:34,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:34,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-03-15 14:03:34,393 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:03:34,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:34,393 INFO L85 PathProgramCache]: Analyzing trace with hash -538103460, now seen corresponding path program 8 times [2022-03-15 14:03:34,393 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:34,393 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273760053] [2022-03-15 14:03:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:34,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:35,406 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:35,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273760053] [2022-03-15 14:03:35,406 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273760053] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:35,406 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626016700] [2022-03-15 14:03:35,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:03:35,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:35,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:35,408 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:35,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-15 14:03:35,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 14:03:35,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:03:35,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 14:03:35,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:36,465 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:03:36,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2022-03-15 14:03:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:03:36,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:03:36,488 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626016700] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:03:36,488 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:03:36,488 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [37] total 55 [2022-03-15 14:03:36,489 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704346038] [2022-03-15 14:03:36,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:36,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 14:03:36,489 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:36,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 14:03:36,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=2690, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:03:36,490 INFO L87 Difference]: Start difference. First operand 11626 states and 32193 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:38,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:38,592 INFO L93 Difference]: Finished difference Result 18886 states and 52234 transitions. [2022-03-15 14:03:38,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:03:38,593 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:03:38,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:38,627 INFO L225 Difference]: With dead ends: 18886 [2022-03-15 14:03:38,627 INFO L226 Difference]: Without dead ends: 18886 [2022-03-15 14:03:38,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2158 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=867, Invalid=6441, Unknown=2, NotChecked=0, Total=7310 [2022-03-15 14:03:38,628 INFO L933 BasicCegarLoop]: 429 mSDtfsCounter, 1168 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 4910 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 307 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:38,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 4910 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1177 Invalid, 0 Unknown, 307 Unchecked, 0.3s Time] [2022-03-15 14:03:38,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18886 states. [2022-03-15 14:03:38,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18886 to 11627. [2022-03-15 14:03:38,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11627 states, 11626 states have (on average 2.769310166867366) internal successors, (32196), 11626 states have internal predecessors, (32196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:38,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11627 states to 11627 states and 32196 transitions. [2022-03-15 14:03:38,861 INFO L78 Accepts]: Start accepts. Automaton has 11627 states and 32196 transitions. Word has length 181 [2022-03-15 14:03:38,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:38,861 INFO L470 AbstractCegarLoop]: Abstraction has 11627 states and 32196 transitions. [2022-03-15 14:03:38,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:38,861 INFO L276 IsEmpty]: Start isEmpty. Operand 11627 states and 32196 transitions. [2022-03-15 14:03:38,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:03:38,876 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:38,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:38,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-03-15 14:03:39,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:39,092 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:03:39,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:39,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1942462158, now seen corresponding path program 6 times [2022-03-15 14:03:39,092 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:39,092 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022884492] [2022-03-15 14:03:39,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:39,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:03:39,424 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:39,424 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022884492] [2022-03-15 14:03:39,424 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022884492] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:03:39,424 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:03:39,424 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:03:39,424 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860919735] [2022-03-15 14:03:39,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:39,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:03:39,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:39,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:03:39,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:03:39,425 INFO L87 Difference]: Start difference. First operand 11627 states and 32196 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:39,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:39,926 INFO L93 Difference]: Finished difference Result 18356 states and 50744 transitions. [2022-03-15 14:03:39,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 14:03:39,926 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:03:39,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:39,957 INFO L225 Difference]: With dead ends: 18356 [2022-03-15 14:03:39,957 INFO L226 Difference]: Without dead ends: 18356 [2022-03-15 14:03:39,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:03:39,957 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 1258 mSDsluCounter, 2950 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 3183 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:39,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1258 Valid, 3183 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:03:39,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18356 states. [2022-03-15 14:03:40,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18356 to 11631. [2022-03-15 14:03:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11631 states, 11630 states have (on average 2.7699914015477214) internal successors, (32215), 11630 states have internal predecessors, (32215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11631 states to 11631 states and 32215 transitions. [2022-03-15 14:03:40,173 INFO L78 Accepts]: Start accepts. Automaton has 11631 states and 32215 transitions. Word has length 181 [2022-03-15 14:03:40,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:40,173 INFO L470 AbstractCegarLoop]: Abstraction has 11631 states and 32215 transitions. [2022-03-15 14:03:40,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:40,173 INFO L276 IsEmpty]: Start isEmpty. Operand 11631 states and 32215 transitions. [2022-03-15 14:03:40,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:03:40,189 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:40,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:40,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2022-03-15 14:03:40,189 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:03:40,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:40,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1419700880, now seen corresponding path program 9 times [2022-03-15 14:03:40,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:40,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377251469] [2022-03-15 14:03:40,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:40,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:03:40,943 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:40,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377251469] [2022-03-15 14:03:40,943 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377251469] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:40,943 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580642928] [2022-03-15 14:03:40,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:03:40,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:40,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:40,946 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:40,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-15 14:03:41,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-15 14:03:41,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:03:41,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 14:03:41,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:41,951 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:03:41,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-03-15 14:03:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:03:42,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:03:42,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580642928] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:03:42,062 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:03:42,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [28] total 44 [2022-03-15 14:03:42,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478515493] [2022-03-15 14:03:42,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:42,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 14:03:42,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:42,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 14:03:42,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1710, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 14:03:42,063 INFO L87 Difference]: Start difference. First operand 11631 states and 32215 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:43,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:43,375 INFO L93 Difference]: Finished difference Result 18714 states and 51710 transitions. [2022-03-15 14:03:43,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 14:03:43,375 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:03:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:43,410 INFO L225 Difference]: With dead ends: 18714 [2022-03-15 14:03:43,410 INFO L226 Difference]: Without dead ends: 18714 [2022-03-15 14:03:43,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=592, Invalid=4100, Unknown=0, NotChecked=0, Total=4692 [2022-03-15 14:03:43,411 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 1216 mSDsluCounter, 4196 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 4488 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:43,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1216 Valid, 4488 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1368 Invalid, 0 Unknown, 202 Unchecked, 0.6s Time] [2022-03-15 14:03:43,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18714 states. [2022-03-15 14:03:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18714 to 11632. [2022-03-15 14:03:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11632 states, 11631 states have (on average 2.770097154156994) internal successors, (32219), 11631 states have internal predecessors, (32219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:43,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11632 states to 11632 states and 32219 transitions. [2022-03-15 14:03:43,647 INFO L78 Accepts]: Start accepts. Automaton has 11632 states and 32219 transitions. Word has length 181 [2022-03-15 14:03:43,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:43,647 INFO L470 AbstractCegarLoop]: Abstraction has 11632 states and 32219 transitions. [2022-03-15 14:03:43,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:43,648 INFO L276 IsEmpty]: Start isEmpty. Operand 11632 states and 32219 transitions. [2022-03-15 14:03:43,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:03:43,661 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:43,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:43,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-15 14:03:43,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2022-03-15 14:03:43,879 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:03:43,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:43,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1804040840, now seen corresponding path program 7 times [2022-03-15 14:03:43,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:43,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443537949] [2022-03-15 14:03:43,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:43,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:03:44,127 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:44,127 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443537949] [2022-03-15 14:03:44,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443537949] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:03:44,127 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:03:44,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:03:44,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149398571] [2022-03-15 14:03:44,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:44,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:03:44,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:44,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:03:44,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:03:44,128 INFO L87 Difference]: Start difference. First operand 11632 states and 32219 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:44,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:03:44,644 INFO L93 Difference]: Finished difference Result 18208 states and 50346 transitions. [2022-03-15 14:03:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 14:03:44,645 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:03:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:03:44,673 INFO L225 Difference]: With dead ends: 18208 [2022-03-15 14:03:44,674 INFO L226 Difference]: Without dead ends: 18208 [2022-03-15 14:03:44,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=811, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:03:44,674 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 1033 mSDsluCounter, 2402 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:03:44,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1033 Valid, 2655 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:03:44,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18208 states. [2022-03-15 14:03:44,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18208 to 11622. [2022-03-15 14:03:44,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11622 states, 11621 states have (on average 2.7689527579382154) internal successors, (32178), 11621 states have internal predecessors, (32178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11622 states to 11622 states and 32178 transitions. [2022-03-15 14:03:44,885 INFO L78 Accepts]: Start accepts. Automaton has 11622 states and 32178 transitions. Word has length 181 [2022-03-15 14:03:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:03:44,885 INFO L470 AbstractCegarLoop]: Abstraction has 11622 states and 32178 transitions. [2022-03-15 14:03:44,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:44,885 INFO L276 IsEmpty]: Start isEmpty. Operand 11622 states and 32178 transitions. [2022-03-15 14:03:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:03:44,900 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:03:44,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:03:44,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2022-03-15 14:03:44,900 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:03:44,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:03:44,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1889943514, now seen corresponding path program 10 times [2022-03-15 14:03:44,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:03:44,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338697725] [2022-03-15 14:03:44,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:03:44,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:03:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:03:45,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:03:45,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:03:45,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338697725] [2022-03-15 14:03:45,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338697725] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:45,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269065033] [2022-03-15 14:03:45,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:03:45,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:03:45,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:03:45,449 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:03:45,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-15 14:03:45,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:03:45,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:03:45,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-15 14:03:45,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:03:46,073 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:03:46,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:03:46,271 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:03:46,738 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-15 14:03:46,738 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2022-03-15 14:03:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:03:46,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:03:55,865 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_5566 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5566))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 ~get1~0.base)) (.cse4 (select .cse7 c_~get2~0.base))) (let ((.cse1 (select .cse4 c_~get2~0.offset)) (.cse0 (select .cse6 c_~get1~0.offset)) (.cse2 (select .cse6 (+ c_~get1~0.offset .cse5))) (.cse3 (select .cse4 (+ c_~get2~0.offset .cse5)))) (or (= .cse0 .cse1) (<= (+ .cse2 1) .cse3) (< .cse1 .cse0) (= .cse2 .cse3)))))) is different from false [2022-03-15 14:03:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:03:56,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269065033] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:03:56,038 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:03:56,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [27, 29] total 59 [2022-03-15 14:03:56,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165976134] [2022-03-15 14:03:56,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:03:56,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 14:03:56,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:03:56,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 14:03:56,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2983, Unknown=15, NotChecked=112, Total=3422 [2022-03-15 14:03:56,039 INFO L87 Difference]: Start difference. First operand 11622 states and 32178 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:03:59,571 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((~get1~0.base Int) (v_ArrVal_5566 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5566))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 ~get1~0.base)) (.cse4 (select .cse7 c_~get2~0.base))) (let ((.cse1 (select .cse4 c_~get2~0.offset)) (.cse0 (select .cse6 c_~get1~0.offset)) (.cse2 (select .cse6 (+ c_~get1~0.offset .cse5))) (.cse3 (select .cse4 (+ c_~get2~0.offset .cse5)))) (or (= .cse0 .cse1) (<= (+ .cse2 1) .cse3) (< .cse1 .cse0) (= .cse2 .cse3)))))) (or (< |c_thread2Thread1of1ForFork1_#t~mem11| |c_thread2Thread1of1ForFork1_#t~mem12|) (<= (+ |c_thread1Thread1of1ForFork0_#t~mem4| 1) |c_thread1Thread1of1ForFork0_#t~mem5|))) is different from false [2022-03-15 14:04:01,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:04:01,617 INFO L93 Difference]: Finished difference Result 15884 states and 43921 transitions. [2022-03-15 14:04:01,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:04:01,618 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:04:01,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:04:01,648 INFO L225 Difference]: With dead ends: 15884 [2022-03-15 14:04:01,648 INFO L226 Difference]: Without dead ends: 15884 [2022-03-15 14:04:01,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 329 SyntacticMatches, 4 SemanticMatches, 76 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1699 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=509, Invalid=5177, Unknown=22, NotChecked=298, Total=6006 [2022-03-15 14:04:01,649 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 442 mSDsluCounter, 4179 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 1813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 649 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:04:01,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 4542 Invalid, 1813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1154 Invalid, 0 Unknown, 649 Unchecked, 0.6s Time] [2022-03-15 14:04:01,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15884 states. [2022-03-15 14:04:01,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15884 to 11636. [2022-03-15 14:04:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11636 states, 11635 states have (on average 2.7683712935109583) internal successors, (32210), 11635 states have internal predecessors, (32210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:01,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11636 states to 11636 states and 32210 transitions. [2022-03-15 14:04:01,860 INFO L78 Accepts]: Start accepts. Automaton has 11636 states and 32210 transitions. Word has length 181 [2022-03-15 14:04:01,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:04:01,860 INFO L470 AbstractCegarLoop]: Abstraction has 11636 states and 32210 transitions. [2022-03-15 14:04:01,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:01,860 INFO L276 IsEmpty]: Start isEmpty. Operand 11636 states and 32210 transitions. [2022-03-15 14:04:01,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:04:01,876 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:04:01,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:04:01,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-03-15 14:04:02,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable284 [2022-03-15 14:04:02,094 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:04:02,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:04:02,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1971221562, now seen corresponding path program 8 times [2022-03-15 14:04:02,094 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:04:02,094 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487330335] [2022-03-15 14:04:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:04:02,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:04:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:04:02,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:04:02,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:04:02,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487330335] [2022-03-15 14:04:02,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487330335] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:04:02,375 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:04:02,375 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:04:02,375 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703135830] [2022-03-15 14:04:02,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:04:02,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:04:02,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:04:02,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:04:02,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:04:02,376 INFO L87 Difference]: Start difference. First operand 11636 states and 32210 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:04:02,972 INFO L93 Difference]: Finished difference Result 18341 states and 50645 transitions. [2022-03-15 14:04:02,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 14:04:02,972 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:04:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:04:03,006 INFO L225 Difference]: With dead ends: 18341 [2022-03-15 14:04:03,006 INFO L226 Difference]: Without dead ends: 18341 [2022-03-15 14:04:03,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=270, Invalid=852, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:04:03,007 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 1050 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:04:03,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 2977 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:04:03,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18341 states. [2022-03-15 14:04:03,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18341 to 11702. [2022-03-15 14:04:03,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11702 states, 11701 states have (on average 2.7678830869156483) internal successors, (32387), 11701 states have internal predecessors, (32387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11702 states to 11702 states and 32387 transitions. [2022-03-15 14:04:03,241 INFO L78 Accepts]: Start accepts. Automaton has 11702 states and 32387 transitions. Word has length 181 [2022-03-15 14:04:03,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:04:03,241 INFO L470 AbstractCegarLoop]: Abstraction has 11702 states and 32387 transitions. [2022-03-15 14:04:03,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:03,241 INFO L276 IsEmpty]: Start isEmpty. Operand 11702 states and 32387 transitions. [2022-03-15 14:04:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:04:03,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:04:03,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:04:03,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2022-03-15 14:04:03,257 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:04:03,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:04:03,257 INFO L85 PathProgramCache]: Analyzing trace with hash -213626536, now seen corresponding path program 11 times [2022-03-15 14:04:03,257 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:04:03,257 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331287811] [2022-03-15 14:04:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:04:03,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:04:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:04:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:04:03,930 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:04:03,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331287811] [2022-03-15 14:04:03,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331287811] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:04:03,930 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754244526] [2022-03-15 14:04:03,930 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:04:03,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:04:03,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:04:03,931 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:04:03,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-15 14:04:04,194 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:04:04,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:04:04,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 70 conjunts are in the unsatisfiable core [2022-03-15 14:04:04,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:04:04,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:04:04,288 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-03-15 14:04:04,288 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-03-15 14:04:04,496 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:04:04,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:04:04,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:04:04,756 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:04:04,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:04:05,394 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:04:05,394 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 18 [2022-03-15 14:04:05,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:04:05,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:04:06,822 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_5620 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5620))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 ~get1~0.base)) (.cse4 (select .cse7 c_~get2~0.base))) (let ((.cse3 (select .cse4 c_~get2~0.offset)) (.cse2 (select .cse6 c_~get1~0.offset)) (.cse0 (select .cse6 (+ c_~get1~0.offset .cse5))) (.cse1 (select .cse4 (+ c_~get2~0.offset .cse5)))) (or (< .cse0 .cse1) (= .cse2 .cse3) (<= (+ .cse3 1) .cse2) (= .cse0 .cse1)))))) is different from false [2022-03-15 14:04:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:04:06,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754244526] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:04:06,931 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:04:06,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [30, 31] total 65 [2022-03-15 14:04:06,931 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399522123] [2022-03-15 14:04:06,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:04:06,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 14:04:06,932 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:04:06,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 14:04:06,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=3734, Unknown=2, NotChecked=124, Total=4160 [2022-03-15 14:04:06,932 INFO L87 Difference]: Start difference. First operand 11702 states and 32387 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:15,221 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((~get1~0.base Int) (v_ArrVal_5620 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5620))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 ~get1~0.base)) (.cse4 (select .cse7 c_~get2~0.base))) (let ((.cse3 (select .cse4 c_~get2~0.offset)) (.cse2 (select .cse6 c_~get1~0.offset)) (.cse0 (select .cse6 (+ c_~get1~0.offset .cse5))) (.cse1 (select .cse4 (+ c_~get2~0.offset .cse5)))) (or (< .cse0 .cse1) (= .cse2 .cse3) (<= (+ .cse3 1) .cse2) (= .cse0 .cse1)))))) (<= (+ |c_thread2Thread1of1ForFork1_#t~mem11| 1) |c_thread2Thread1of1ForFork1_#t~mem12|)) is different from false [2022-03-15 14:04:17,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:04:17,168 INFO L93 Difference]: Finished difference Result 15905 states and 44028 transitions. [2022-03-15 14:04:17,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 14:04:17,168 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:04:17,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:04:17,198 INFO L225 Difference]: With dead ends: 15905 [2022-03-15 14:04:17,198 INFO L226 Difference]: Without dead ends: 15905 [2022-03-15 14:04:17,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 331 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=488, Invalid=5989, Unknown=11, NotChecked=318, Total=6806 [2022-03-15 14:04:17,200 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 374 mSDsluCounter, 3991 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 4360 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 732 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:04:17,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 4360 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1022 Invalid, 0 Unknown, 732 Unchecked, 0.5s Time] [2022-03-15 14:04:17,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15905 states. [2022-03-15 14:04:17,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15905 to 11769. [2022-03-15 14:04:17,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11769 states, 11768 states have (on average 2.7673351461590756) internal successors, (32566), 11768 states have internal predecessors, (32566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:17,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11769 states to 11769 states and 32566 transitions. [2022-03-15 14:04:17,414 INFO L78 Accepts]: Start accepts. Automaton has 11769 states and 32566 transitions. Word has length 181 [2022-03-15 14:04:17,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:04:17,415 INFO L470 AbstractCegarLoop]: Abstraction has 11769 states and 32566 transitions. [2022-03-15 14:04:17,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:17,415 INFO L276 IsEmpty]: Start isEmpty. Operand 11769 states and 32566 transitions. [2022-03-15 14:04:17,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:04:17,430 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:04:17,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:04:17,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-15 14:04:17,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:04:17,666 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:04:17,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:04:17,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1163352958, now seen corresponding path program 9 times [2022-03-15 14:04:17,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:04:17,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730126082] [2022-03-15 14:04:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:04:17,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:04:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:04:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:04:17,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:04:17,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730126082] [2022-03-15 14:04:17,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730126082] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:04:17,878 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:04:17,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:04:17,878 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118528214] [2022-03-15 14:04:17,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:04:17,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:04:17,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:04:17,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:04:17,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:04:17,878 INFO L87 Difference]: Start difference. First operand 11769 states and 32566 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:18,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:04:18,347 INFO L93 Difference]: Finished difference Result 18311 states and 50542 transitions. [2022-03-15 14:04:18,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 14:04:18,348 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:04:18,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:04:18,380 INFO L225 Difference]: With dead ends: 18311 [2022-03-15 14:04:18,380 INFO L226 Difference]: Without dead ends: 18311 [2022-03-15 14:04:18,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=248, Invalid=808, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:04:18,381 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 1074 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:04:18,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1074 Valid, 3043 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:04:18,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18311 states. [2022-03-15 14:04:18,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18311 to 11773. [2022-03-15 14:04:18,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11773 states, 11772 states have (on average 2.768008834522596) internal successors, (32585), 11772 states have internal predecessors, (32585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:18,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11773 states to 11773 states and 32585 transitions. [2022-03-15 14:04:18,602 INFO L78 Accepts]: Start accepts. Automaton has 11773 states and 32585 transitions. Word has length 181 [2022-03-15 14:04:18,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:04:18,603 INFO L470 AbstractCegarLoop]: Abstraction has 11773 states and 32585 transitions. [2022-03-15 14:04:18,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 11773 states and 32585 transitions. [2022-03-15 14:04:18,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:04:18,618 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:04:18,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:04:18,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2022-03-15 14:04:18,618 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:04:18,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:04:18,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2096157216, now seen corresponding path program 12 times [2022-03-15 14:04:18,619 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:04:18,619 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349025278] [2022-03-15 14:04:18,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:04:18,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:04:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:04:19,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:04:19,752 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:04:19,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349025278] [2022-03-15 14:04:19,752 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349025278] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:04:19,752 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276790383] [2022-03-15 14:04:19,752 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:04:19,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:04:19,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:04:19,754 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:04:19,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-15 14:04:20,017 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-03-15 14:04:20,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:04:20,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-15 14:04:20,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:04:20,673 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:04:20,674 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-03-15 14:04:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:04:20,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:04:20,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276790383] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:04:20,755 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:04:20,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [38] total 54 [2022-03-15 14:04:20,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933905685] [2022-03-15 14:04:20,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:04:20,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 14:04:20,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:04:20,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 14:04:20,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2633, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 14:04:20,756 INFO L87 Difference]: Start difference. First operand 11773 states and 32585 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:21,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:04:21,927 INFO L93 Difference]: Finished difference Result 18794 states and 51846 transitions. [2022-03-15 14:04:21,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 14:04:21,927 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:04:21,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:04:21,964 INFO L225 Difference]: With dead ends: 18794 [2022-03-15 14:04:21,964 INFO L226 Difference]: Without dead ends: 18794 [2022-03-15 14:04:21,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=666, Invalid=5654, Unknown=0, NotChecked=0, Total=6320 [2022-03-15 14:04:21,965 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 1404 mSDsluCounter, 4310 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 4604 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 14:04:21,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1404 Valid, 4604 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1351 Invalid, 0 Unknown, 188 Unchecked, 0.4s Time] [2022-03-15 14:04:21,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18794 states. [2022-03-15 14:04:22,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18794 to 11776. [2022-03-15 14:04:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11776 states, 11775 states have (on average 2.7681528662420383) internal successors, (32595), 11775 states have internal predecessors, (32595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:22,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11776 states to 11776 states and 32595 transitions. [2022-03-15 14:04:22,231 INFO L78 Accepts]: Start accepts. Automaton has 11776 states and 32595 transitions. Word has length 181 [2022-03-15 14:04:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:04:22,231 INFO L470 AbstractCegarLoop]: Abstraction has 11776 states and 32595 transitions. [2022-03-15 14:04:22,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:22,232 INFO L276 IsEmpty]: Start isEmpty. Operand 11776 states and 32595 transitions. [2022-03-15 14:04:22,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:04:22,249 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:04:22,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:04:22,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-15 14:04:22,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:04:22,460 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:04:22,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:04:22,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1711817256, now seen corresponding path program 10 times [2022-03-15 14:04:22,460 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:04:22,460 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552741232] [2022-03-15 14:04:22,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:04:22,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:04:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:04:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:04:22,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:04:22,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552741232] [2022-03-15 14:04:22,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552741232] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:04:22,693 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:04:22,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:04:22,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087880017] [2022-03-15 14:04:22,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:04:22,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:04:22,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:04:22,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:04:22,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:04:22,694 INFO L87 Difference]: Start difference. First operand 11776 states and 32595 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:23,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:04:23,170 INFO L93 Difference]: Finished difference Result 18110 states and 50010 transitions. [2022-03-15 14:04:23,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 14:04:23,170 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:04:23,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:04:23,201 INFO L225 Difference]: With dead ends: 18110 [2022-03-15 14:04:23,201 INFO L226 Difference]: Without dead ends: 18110 [2022-03-15 14:04:23,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:04:23,202 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 994 mSDsluCounter, 2731 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 2973 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:04:23,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [994 Valid, 2973 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:04:23,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18110 states. [2022-03-15 14:04:23,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18110 to 11771. [2022-03-15 14:04:23,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11771 states, 11770 states have (on average 2.767374681393373) internal successors, (32572), 11770 states have internal predecessors, (32572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:23,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11771 states to 11771 states and 32572 transitions. [2022-03-15 14:04:23,414 INFO L78 Accepts]: Start accepts. Automaton has 11771 states and 32572 transitions. Word has length 181 [2022-03-15 14:04:23,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:04:23,414 INFO L470 AbstractCegarLoop]: Abstraction has 11771 states and 32572 transitions. [2022-03-15 14:04:23,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:23,414 INFO L276 IsEmpty]: Start isEmpty. Operand 11771 states and 32572 transitions. [2022-03-15 14:04:23,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:04:23,430 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:04:23,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:04:23,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2022-03-15 14:04:23,430 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:04:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:04:23,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1110834314, now seen corresponding path program 13 times [2022-03-15 14:04:23,430 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:04:23,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261985718] [2022-03-15 14:04:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:04:23,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:04:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:04:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:04:24,527 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:04:24,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261985718] [2022-03-15 14:04:24,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261985718] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:04:24,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481185101] [2022-03-15 14:04:24,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:04:24,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:04:24,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:04:24,528 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:04:24,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-15 14:04:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:04:24,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-15 14:04:24,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:04:24,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:04:25,034 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:04:25,262 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:04:25,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:04:25,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:04:25,562 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:04:25,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:04:26,239 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-15 14:04:26,239 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2022-03-15 14:04:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:04:26,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:04:27,231 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_5722 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5722))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 ~get2~0.base)) (.cse4 (select .cse7 c_~get1~0.base))) (let ((.cse1 (select .cse4 c_~get1~0.offset)) (.cse0 (select .cse6 c_~get2~0.offset)) (.cse3 (select .cse6 (+ c_~get2~0.offset .cse5))) (.cse2 (select .cse4 (+ c_~get1~0.offset .cse5)))) (or (< .cse0 .cse1) (= .cse1 .cse0) (<= (+ 1 .cse2) .cse3) (= .cse3 .cse2)))))) is different from false [2022-03-15 14:04:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:04:27,402 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481185101] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:04:27,402 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:04:27,402 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [32, 30] total 71 [2022-03-15 14:04:27,402 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153011] [2022-03-15 14:04:27,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:04:27,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 14:04:27,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:04:27,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 14:04:27,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=4489, Unknown=1, NotChecked=136, Total=4970 [2022-03-15 14:04:27,404 INFO L87 Difference]: Start difference. First operand 11771 states and 32572 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:42,311 WARN L228 SmtUtils]: Spent 13.98s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-15 14:04:42,540 WARN L838 $PredicateComparison]: unable to prove that (and (or (< |c_thread2Thread1of1ForFork1_#t~mem11| |c_thread2Thread1of1ForFork1_#t~mem12|) (<= (+ |c_thread1Thread1of1ForFork0_#t~mem4| 1) |c_thread1Thread1of1ForFork0_#t~mem5|)) (forall ((~get2~0.base Int) (v_ArrVal_5722 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5722))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 ~get2~0.base)) (.cse4 (select .cse7 c_~get1~0.base))) (let ((.cse1 (select .cse4 c_~get1~0.offset)) (.cse0 (select .cse6 c_~get2~0.offset)) (.cse3 (select .cse6 (+ c_~get2~0.offset .cse5))) (.cse2 (select .cse4 (+ c_~get1~0.offset .cse5)))) (or (< .cse0 .cse1) (= .cse1 .cse0) (<= (+ 1 .cse2) .cse3) (= .cse3 .cse2))))))) is different from false [2022-03-15 14:04:43,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:04:43,340 INFO L93 Difference]: Finished difference Result 15071 states and 41584 transitions. [2022-03-15 14:04:43,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 14:04:43,341 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:04:43,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:04:43,369 INFO L225 Difference]: With dead ends: 15071 [2022-03-15 14:04:43,369 INFO L226 Difference]: Without dead ends: 15071 [2022-03-15 14:04:43,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 327 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2106 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=528, Invalid=6788, Unknown=2, NotChecked=338, Total=7656 [2022-03-15 14:04:43,371 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 424 mSDsluCounter, 3749 mSDsCounter, 0 mSdLazyCounter, 1135 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 4107 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1213 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:04:43,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 4107 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1135 Invalid, 0 Unknown, 1213 Unchecked, 0.6s Time] [2022-03-15 14:04:43,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15071 states. [2022-03-15 14:04:43,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15071 to 11790. [2022-03-15 14:04:43,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11790 states, 11789 states have (on average 2.7663923996946305) internal successors, (32613), 11789 states have internal predecessors, (32613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:43,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11790 states to 11790 states and 32613 transitions. [2022-03-15 14:04:43,579 INFO L78 Accepts]: Start accepts. Automaton has 11790 states and 32613 transitions. Word has length 181 [2022-03-15 14:04:43,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:04:43,579 INFO L470 AbstractCegarLoop]: Abstraction has 11790 states and 32613 transitions. [2022-03-15 14:04:43,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:43,579 INFO L276 IsEmpty]: Start isEmpty. Operand 11790 states and 32613 transitions. [2022-03-15 14:04:43,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:04:43,596 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:04:43,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:04:43,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-15 14:04:43,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:04:43,815 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:04:43,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:04:43,815 INFO L85 PathProgramCache]: Analyzing trace with hash 334423454, now seen corresponding path program 14 times [2022-03-15 14:04:43,815 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:04:43,815 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098830820] [2022-03-15 14:04:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:04:43,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:04:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:04:44,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:04:44,705 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:04:44,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098830820] [2022-03-15 14:04:44,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098830820] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:04:44,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102939850] [2022-03-15 14:04:44,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:04:44,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:04:44,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:04:44,707 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:04:44,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-15 14:04:44,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 14:04:44,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:04:44,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-15 14:04:44,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:04:46,047 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:04:46,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 28 [2022-03-15 14:04:46,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:04:46,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:04:46,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102939850] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:04:46,152 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:04:46,152 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [30] total 49 [2022-03-15 14:04:46,152 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999296972] [2022-03-15 14:04:46,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:04:46,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 14:04:46,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:04:46,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 14:04:46,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2120, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:04:46,153 INFO L87 Difference]: Start difference. First operand 11790 states and 32613 transitions. Second operand has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:50,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:04:50,181 INFO L93 Difference]: Finished difference Result 18562 states and 51218 transitions. [2022-03-15 14:04:50,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 14:04:50,182 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:04:50,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:04:50,217 INFO L225 Difference]: With dead ends: 18562 [2022-03-15 14:04:50,217 INFO L226 Difference]: Without dead ends: 18562 [2022-03-15 14:04:50,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=789, Invalid=5369, Unknown=4, NotChecked=0, Total=6162 [2022-03-15 14:04:50,219 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 1635 mSDsluCounter, 4501 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 4812 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-15 14:04:50,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1635 Valid, 4812 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1497 Invalid, 0 Unknown, 194 Unchecked, 0.7s Time] [2022-03-15 14:04:50,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18562 states. [2022-03-15 14:04:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18562 to 11776. [2022-03-15 14:04:50,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11776 states, 11775 states have (on average 2.7672186836518047) internal successors, (32584), 11775 states have internal predecessors, (32584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:50,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11776 states to 11776 states and 32584 transitions. [2022-03-15 14:04:50,457 INFO L78 Accepts]: Start accepts. Automaton has 11776 states and 32584 transitions. Word has length 181 [2022-03-15 14:04:50,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:04:50,458 INFO L470 AbstractCegarLoop]: Abstraction has 11776 states and 32584 transitions. [2022-03-15 14:04:50,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:50,458 INFO L276 IsEmpty]: Start isEmpty. Operand 11776 states and 32584 transitions. [2022-03-15 14:04:50,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:04:50,474 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:04:50,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:04:50,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-03-15 14:04:50,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:04:50,692 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:04:50,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:04:50,692 INFO L85 PathProgramCache]: Analyzing trace with hash -147448866, now seen corresponding path program 15 times [2022-03-15 14:04:50,692 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:04:50,692 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848170168] [2022-03-15 14:04:50,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:04:50,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:04:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:04:51,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:04:51,853 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:04:51,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848170168] [2022-03-15 14:04:51,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848170168] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:04:51,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091104885] [2022-03-15 14:04:51,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:04:51,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:04:51,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:04:51,855 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:04:51,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-15 14:04:52,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-15 14:04:52,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:04:52,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-15 14:04:52,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:04:53,378 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:04:53,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 28 [2022-03-15 14:04:53,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:04:53,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:04:53,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091104885] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:04:53,482 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:04:53,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [30] total 49 [2022-03-15 14:04:53,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819927021] [2022-03-15 14:04:53,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:04:53,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 14:04:53,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:04:53,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 14:04:53,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=2105, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:04:53,483 INFO L87 Difference]: Start difference. First operand 11776 states and 32584 transitions. Second operand has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:55,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:04:55,079 INFO L93 Difference]: Finished difference Result 19174 states and 52889 transitions. [2022-03-15 14:04:55,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 14:04:55,079 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:04:55,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:04:55,114 INFO L225 Difference]: With dead ends: 19174 [2022-03-15 14:04:55,114 INFO L226 Difference]: Without dead ends: 19174 [2022-03-15 14:04:55,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1730 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=885, Invalid=5757, Unknown=0, NotChecked=0, Total=6642 [2022-03-15 14:04:55,115 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1531 mSDsluCounter, 4478 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 4811 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 354 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:04:55,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1531 Valid, 4811 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1357 Invalid, 0 Unknown, 354 Unchecked, 0.5s Time] [2022-03-15 14:04:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19174 states. [2022-03-15 14:04:55,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19174 to 11772. [2022-03-15 14:04:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11772 states, 11771 states have (on average 2.766884716676578) internal successors, (32569), 11771 states have internal predecessors, (32569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11772 states to 11772 states and 32569 transitions. [2022-03-15 14:04:55,355 INFO L78 Accepts]: Start accepts. Automaton has 11772 states and 32569 transitions. Word has length 181 [2022-03-15 14:04:55,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:04:55,355 INFO L470 AbstractCegarLoop]: Abstraction has 11772 states and 32569 transitions. [2022-03-15 14:04:55,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:04:55,355 INFO L276 IsEmpty]: Start isEmpty. Operand 11772 states and 32569 transitions. [2022-03-15 14:04:55,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:04:55,371 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:04:55,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:04:55,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-03-15 14:04:55,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable292 [2022-03-15 14:04:55,574 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:04:55,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:04:55,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1528868112, now seen corresponding path program 16 times [2022-03-15 14:04:55,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:04:55,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918149678] [2022-03-15 14:04:55,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:04:55,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:04:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:04:56,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:04:56,306 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:04:56,306 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918149678] [2022-03-15 14:04:56,307 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918149678] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:04:56,307 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579129717] [2022-03-15 14:04:56,307 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:04:56,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:04:56,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:04:56,308 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:04:56,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-15 14:04:56,594 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:04:56,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:04:56,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-15 14:04:56,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:04:57,073 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:04:57,205 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:04:57,292 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:04:57,936 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-15 14:04:57,936 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-15 14:04:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:04:57,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:05:10,465 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_5822 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5822))) (let ((.cse5 (select .cse7 c_~get2~0.base)) (.cse4 (select .cse7 ~get1~0.base)) (.cse6 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse3 (select .cse4 (+ c_~get1~0.offset .cse6))) (.cse2 (select .cse5 (+ c_~get2~0.offset .cse6))) (.cse0 (select .cse5 c_~get2~0.offset)) (.cse1 (select .cse4 c_~get1~0.offset))) (or (= .cse0 .cse1) (= .cse2 .cse3) (< .cse3 .cse2) (<= (+ .cse0 1) .cse1)))))) is different from false [2022-03-15 14:05:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:05:10,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579129717] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:05:10,603 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:05:10,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [30, 30] total 68 [2022-03-15 14:05:10,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670724047] [2022-03-15 14:05:10,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:05:10,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 14:05:10,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:05:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 14:05:10,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=4064, Unknown=15, NotChecked=130, Total=4556 [2022-03-15 14:05:10,604 INFO L87 Difference]: Start difference. First operand 11772 states and 32569 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:20,352 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((~get1~0.base Int) (v_ArrVal_5822 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5822))) (let ((.cse5 (select .cse7 c_~get2~0.base)) (.cse4 (select .cse7 ~get1~0.base)) (.cse6 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse3 (select .cse4 (+ c_~get1~0.offset .cse6))) (.cse2 (select .cse5 (+ c_~get2~0.offset .cse6))) (.cse0 (select .cse5 c_~get2~0.offset)) (.cse1 (select .cse4 c_~get1~0.offset))) (or (= .cse0 .cse1) (= .cse2 .cse3) (< .cse3 .cse2) (<= (+ .cse0 1) .cse1)))))) (<= (+ |c_thread2Thread1of1ForFork1_#t~mem11| 1) |c_thread2Thread1of1ForFork1_#t~mem12|)) is different from false [2022-03-15 14:05:21,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:05:21,699 INFO L93 Difference]: Finished difference Result 19362 states and 53355 transitions. [2022-03-15 14:05:21,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 14:05:21,699 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:05:21,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:05:21,741 INFO L225 Difference]: With dead ends: 19362 [2022-03-15 14:05:21,741 INFO L226 Difference]: Without dead ends: 19362 [2022-03-15 14:05:21,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 328 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2324 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=690, Invalid=8224, Unknown=24, NotChecked=374, Total=9312 [2022-03-15 14:05:21,742 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 559 mSDsluCounter, 4042 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 4454 SdHoareTripleChecker+Invalid, 2042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1006 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:05:21,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 4454 Invalid, 2042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1027 Invalid, 0 Unknown, 1006 Unchecked, 0.6s Time] [2022-03-15 14:05:21,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19362 states. [2022-03-15 14:05:21,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19362 to 11815. [2022-03-15 14:05:21,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11815 states, 11814 states have (on average 2.7674792618926696) internal successors, (32695), 11814 states have internal predecessors, (32695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:21,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11815 states to 11815 states and 32695 transitions. [2022-03-15 14:05:21,990 INFO L78 Accepts]: Start accepts. Automaton has 11815 states and 32695 transitions. Word has length 181 [2022-03-15 14:05:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:05:21,991 INFO L470 AbstractCegarLoop]: Abstraction has 11815 states and 32695 transitions. [2022-03-15 14:05:21,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:21,991 INFO L276 IsEmpty]: Start isEmpty. Operand 11815 states and 32695 transitions. [2022-03-15 14:05:22,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:05:22,006 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:05:22,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:05:22,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-03-15 14:05:22,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:05:22,219 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:05:22,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:05:22,219 INFO L85 PathProgramCache]: Analyzing trace with hash 631660334, now seen corresponding path program 17 times [2022-03-15 14:05:22,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:05:22,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163363005] [2022-03-15 14:05:22,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:05:22,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:05:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:05:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:05:23,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:05:23,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163363005] [2022-03-15 14:05:23,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163363005] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:05:23,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023134821] [2022-03-15 14:05:23,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 14:05:23,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:05:23,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:05:23,214 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:05:23,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-15 14:05:23,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 14:05:23,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:05:23,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-15 14:05:23,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:05:24,465 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:05:24,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 28 [2022-03-15 14:05:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:05:24,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:05:24,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023134821] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:05:24,529 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:05:24,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [30] total 49 [2022-03-15 14:05:24,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174953764] [2022-03-15 14:05:24,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:05:24,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 14:05:24,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:05:24,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 14:05:24,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=2103, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 14:05:24,530 INFO L87 Difference]: Start difference. First operand 11815 states and 32695 transitions. Second operand has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:05:25,988 INFO L93 Difference]: Finished difference Result 19007 states and 52430 transitions. [2022-03-15 14:05:25,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 14:05:25,988 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:05:25,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:05:26,021 INFO L225 Difference]: With dead ends: 19007 [2022-03-15 14:05:26,021 INFO L226 Difference]: Without dead ends: 19007 [2022-03-15 14:05:26,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1697 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=851, Invalid=5629, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 14:05:26,023 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1584 mSDsluCounter, 5118 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 5433 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 225 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 14:05:26,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1584 Valid, 5433 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1675 Invalid, 0 Unknown, 225 Unchecked, 0.6s Time] [2022-03-15 14:05:26,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19007 states. [2022-03-15 14:05:26,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19007 to 11785. [2022-03-15 14:05:26,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11785 states, 11784 states have (on average 2.768245078071962) internal successors, (32621), 11784 states have internal predecessors, (32621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:26,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11785 states to 11785 states and 32621 transitions. [2022-03-15 14:05:26,272 INFO L78 Accepts]: Start accepts. Automaton has 11785 states and 32621 transitions. Word has length 181 [2022-03-15 14:05:26,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:05:26,272 INFO L470 AbstractCegarLoop]: Abstraction has 11785 states and 32621 transitions. [2022-03-15 14:05:26,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.24) internal successors, (181), 25 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:26,272 INFO L276 IsEmpty]: Start isEmpty. Operand 11785 states and 32621 transitions. [2022-03-15 14:05:26,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:05:26,288 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:05:26,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:05:26,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-03-15 14:05:26,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294,66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:05:26,504 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:05:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:05:26,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1533202956, now seen corresponding path program 18 times [2022-03-15 14:05:26,504 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:05:26,504 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477665021] [2022-03-15 14:05:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:05:26,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:05:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:05:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:05:27,979 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:05:27,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477665021] [2022-03-15 14:05:27,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477665021] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:05:27,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100169340] [2022-03-15 14:05:27,979 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 14:05:27,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:05:27,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:05:27,980 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:05:27,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-15 14:05:28,273 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-03-15 14:05:28,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:05:28,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 14:05:28,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:05:29,432 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:05:29,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2022-03-15 14:05:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:05:29,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:05:29,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100169340] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:05:29,455 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:05:29,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [37] total 55 [2022-03-15 14:05:29,455 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266110495] [2022-03-15 14:05:29,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:05:29,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 14:05:29,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:05:29,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 14:05:29,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=2705, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 14:05:29,456 INFO L87 Difference]: Start difference. First operand 11785 states and 32621 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:30,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:05:30,649 INFO L93 Difference]: Finished difference Result 19882 states and 54573 transitions. [2022-03-15 14:05:30,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 14:05:30,649 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:05:30,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:05:30,685 INFO L225 Difference]: With dead ends: 19882 [2022-03-15 14:05:30,685 INFO L226 Difference]: Without dead ends: 19882 [2022-03-15 14:05:30,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2257 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=875, Invalid=6607, Unknown=0, NotChecked=0, Total=7482 [2022-03-15 14:05:30,687 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 1584 mSDsluCounter, 4421 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 4752 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 441 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:05:30,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1584 Valid, 4752 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1129 Invalid, 0 Unknown, 441 Unchecked, 0.3s Time] [2022-03-15 14:05:30,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19882 states. [2022-03-15 14:05:30,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19882 to 11841. [2022-03-15 14:05:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11841 states, 11840 states have (on average 2.7679898648648646) internal successors, (32773), 11840 states have internal predecessors, (32773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:30,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11841 states to 11841 states and 32773 transitions. [2022-03-15 14:05:30,990 INFO L78 Accepts]: Start accepts. Automaton has 11841 states and 32773 transitions. Word has length 181 [2022-03-15 14:05:30,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:05:30,990 INFO L470 AbstractCegarLoop]: Abstraction has 11841 states and 32773 transitions. [2022-03-15 14:05:30,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:30,990 INFO L276 IsEmpty]: Start isEmpty. Operand 11841 states and 32773 transitions. [2022-03-15 14:05:31,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:05:31,006 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:05:31,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:05:31,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-03-15 14:05:31,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:05:31,222 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:05:31,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:05:31,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2058377566, now seen corresponding path program 19 times [2022-03-15 14:05:31,225 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:05:31,225 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421238624] [2022-03-15 14:05:31,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:05:31,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:05:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:05:32,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:05:32,288 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:05:32,288 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421238624] [2022-03-15 14:05:32,288 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421238624] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:05:32,288 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894032675] [2022-03-15 14:05:32,288 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 14:05:32,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:05:32,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:05:32,289 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:05:32,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-15 14:05:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:05:32,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 61 conjunts are in the unsatisfiable core [2022-03-15 14:05:32,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:05:32,739 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:05:32,852 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:05:33,086 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:05:33,086 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 14:05:33,192 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:05:33,389 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:05:33,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:05:34,125 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-15 14:05:34,125 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 23 [2022-03-15 14:05:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:05:34,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:05:34,793 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_5924 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5924))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 ~get2~0.base)) (.cse4 (select .cse7 c_~get1~0.base))) (let ((.cse3 (select .cse4 c_~get1~0.offset)) (.cse2 (select .cse6 c_~get2~0.offset)) (.cse1 (select .cse6 (+ c_~get2~0.offset .cse5))) (.cse0 (select .cse4 (+ c_~get1~0.offset .cse5)))) (or (< .cse0 .cse1) (<= (+ 1 .cse2) .cse3) (= .cse3 .cse2) (= .cse1 .cse0)))))) is different from false [2022-03-15 14:05:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:05:34,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894032675] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:05:34,878 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:05:34,878 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [32, 30] total 71 [2022-03-15 14:05:34,879 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632996309] [2022-03-15 14:05:34,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:05:34,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 14:05:34,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:05:34,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 14:05:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=354, Invalid=4479, Unknown=1, NotChecked=136, Total=4970 [2022-03-15 14:05:34,880 INFO L87 Difference]: Start difference. First operand 11841 states and 32773 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:35,270 WARN L838 $PredicateComparison]: unable to prove that (and (<= (+ |c_thread2Thread1of1ForFork1_#t~mem11| 1) |c_thread2Thread1of1ForFork1_#t~mem12|) (forall ((~get2~0.base Int) (v_ArrVal_5924 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5924))) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select .cse7 ~get2~0.base)) (.cse4 (select .cse7 c_~get1~0.base))) (let ((.cse3 (select .cse4 c_~get1~0.offset)) (.cse2 (select .cse6 c_~get2~0.offset)) (.cse1 (select .cse6 (+ c_~get2~0.offset .cse5))) (.cse0 (select .cse4 (+ c_~get1~0.offset .cse5)))) (or (< .cse0 .cse1) (<= (+ 1 .cse2) .cse3) (= .cse3 .cse2) (= .cse1 .cse0))))))) is different from false [2022-03-15 14:05:36,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:05:36,075 INFO L93 Difference]: Finished difference Result 19554 states and 53746 transitions. [2022-03-15 14:05:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 14:05:36,075 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:05:36,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:05:36,114 INFO L225 Difference]: With dead ends: 19554 [2022-03-15 14:05:36,114 INFO L226 Difference]: Without dead ends: 19554 [2022-03-15 14:05:36,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 327 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2312 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=697, Invalid=7681, Unknown=2, NotChecked=362, Total=8742 [2022-03-15 14:05:36,116 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 590 mSDsluCounter, 4128 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 4531 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1250 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:05:36,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 4531 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1109 Invalid, 0 Unknown, 1250 Unchecked, 0.5s Time] [2022-03-15 14:05:36,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19554 states. [2022-03-15 14:05:36,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19554 to 11893. [2022-03-15 14:05:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11893 states, 11892 states have (on average 2.76698620921628) internal successors, (32905), 11892 states have internal predecessors, (32905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:36,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11893 states to 11893 states and 32905 transitions. [2022-03-15 14:05:36,362 INFO L78 Accepts]: Start accepts. Automaton has 11893 states and 32905 transitions. Word has length 181 [2022-03-15 14:05:36,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:05:36,362 INFO L470 AbstractCegarLoop]: Abstraction has 11893 states and 32905 transitions. [2022-03-15 14:05:36,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:36,362 INFO L276 IsEmpty]: Start isEmpty. Operand 11893 states and 32905 transitions. [2022-03-15 14:05:36,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:05:36,377 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:05:36,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:05:36,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-03-15 14:05:36,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:05:36,595 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:05:36,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:05:36,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1802458420, now seen corresponding path program 11 times [2022-03-15 14:05:36,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:05:36,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860919074] [2022-03-15 14:05:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:05:36,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:05:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:05:36,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:05:36,851 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:05:36,851 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860919074] [2022-03-15 14:05:36,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860919074] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:05:36,851 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:05:36,851 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:05:36,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902145233] [2022-03-15 14:05:36,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:05:36,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:05:36,851 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:05:36,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:05:36,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:05:36,852 INFO L87 Difference]: Start difference. First operand 11893 states and 32905 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:37,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:05:37,459 INFO L93 Difference]: Finished difference Result 19210 states and 53111 transitions. [2022-03-15 14:05:37,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 14:05:37,459 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:05:37,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:05:37,489 INFO L225 Difference]: With dead ends: 19210 [2022-03-15 14:05:37,489 INFO L226 Difference]: Without dead ends: 19210 [2022-03-15 14:05:37,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=268, Invalid=854, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:05:37,490 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 1102 mSDsluCounter, 2848 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 3102 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:05:37,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 3102 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:05:37,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19210 states. [2022-03-15 14:05:37,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19210 to 11929. [2022-03-15 14:05:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11929 states, 11928 states have (on average 2.767270288397049) internal successors, (33008), 11928 states have internal predecessors, (33008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11929 states to 11929 states and 33008 transitions. [2022-03-15 14:05:37,720 INFO L78 Accepts]: Start accepts. Automaton has 11929 states and 33008 transitions. Word has length 181 [2022-03-15 14:05:37,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:05:37,721 INFO L470 AbstractCegarLoop]: Abstraction has 11929 states and 33008 transitions. [2022-03-15 14:05:37,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:37,721 INFO L276 IsEmpty]: Start isEmpty. Operand 11929 states and 33008 transitions. [2022-03-15 14:05:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:05:37,736 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:05:37,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:05:37,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2022-03-15 14:05:37,736 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:05:37,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:05:37,737 INFO L85 PathProgramCache]: Analyzing trace with hash -707005812, now seen corresponding path program 20 times [2022-03-15 14:05:37,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:05:37,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617339847] [2022-03-15 14:05:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:05:37,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:05:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:05:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:05:38,786 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:05:38,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617339847] [2022-03-15 14:05:38,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617339847] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:05:38,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911311758] [2022-03-15 14:05:38,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 14:05:38,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:05:38,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:05:38,787 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:05:38,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-15 14:05:39,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 14:05:39,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:05:39,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-15 14:05:39,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:05:40,110 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:05:40,111 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2022-03-15 14:05:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:05:40,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:05:40,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911311758] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:05:40,156 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:05:40,156 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [30] total 48 [2022-03-15 14:05:40,156 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99090940] [2022-03-15 14:05:40,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:05:40,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 14:05:40,156 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:05:40,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 14:05:40,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:05:40,157 INFO L87 Difference]: Start difference. First operand 11929 states and 33008 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:44,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:05:44,304 INFO L93 Difference]: Finished difference Result 20337 states and 56215 transitions. [2022-03-15 14:05:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 14:05:44,304 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:05:44,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:05:44,344 INFO L225 Difference]: With dead ends: 20337 [2022-03-15 14:05:44,344 INFO L226 Difference]: Without dead ends: 20337 [2022-03-15 14:05:44,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=930, Invalid=5871, Unknown=5, NotChecked=0, Total=6806 [2022-03-15 14:05:44,346 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 1465 mSDsluCounter, 4126 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 4503 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 394 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:05:44,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1465 Valid, 4503 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 929 Invalid, 0 Unknown, 394 Unchecked, 0.3s Time] [2022-03-15 14:05:44,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20337 states. [2022-03-15 14:05:44,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20337 to 11949. [2022-03-15 14:05:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11949 states, 11948 states have (on average 2.767576163374623) internal successors, (33067), 11948 states have internal predecessors, (33067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11949 states to 11949 states and 33067 transitions. [2022-03-15 14:05:44,625 INFO L78 Accepts]: Start accepts. Automaton has 11949 states and 33067 transitions. Word has length 181 [2022-03-15 14:05:44,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:05:44,625 INFO L470 AbstractCegarLoop]: Abstraction has 11949 states and 33067 transitions. [2022-03-15 14:05:44,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:44,625 INFO L276 IsEmpty]: Start isEmpty. Operand 11949 states and 33067 transitions. [2022-03-15 14:05:44,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:05:44,642 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:05:44,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:05:44,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-15 14:05:44,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable298 [2022-03-15 14:05:44,862 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:05:44,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:05:44,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2111364510, now seen corresponding path program 12 times [2022-03-15 14:05:44,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:05:44,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352329803] [2022-03-15 14:05:44,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:05:44,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:05:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:05:45,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:05:45,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:05:45,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352329803] [2022-03-15 14:05:45,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352329803] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:05:45,178 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:05:45,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:05:45,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286442139] [2022-03-15 14:05:45,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:05:45,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:05:45,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:05:45,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:05:45,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:05:45,179 INFO L87 Difference]: Start difference. First operand 11949 states and 33067 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:45,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:05:45,746 INFO L93 Difference]: Finished difference Result 19254 states and 53257 transitions. [2022-03-15 14:05:45,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 14:05:45,746 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:05:45,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:05:45,779 INFO L225 Difference]: With dead ends: 19254 [2022-03-15 14:05:45,779 INFO L226 Difference]: Without dead ends: 19254 [2022-03-15 14:05:45,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=811, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:05:45,780 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 1452 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 14:05:45,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1452 Valid, 2595 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 14:05:45,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19254 states. [2022-03-15 14:05:45,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19254 to 11953. [2022-03-15 14:05:45,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11953 states, 11952 states have (on average 2.768239625167336) internal successors, (33086), 11952 states have internal predecessors, (33086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:46,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11953 states to 11953 states and 33086 transitions. [2022-03-15 14:05:46,019 INFO L78 Accepts]: Start accepts. Automaton has 11953 states and 33086 transitions. Word has length 181 [2022-03-15 14:05:46,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:05:46,019 INFO L470 AbstractCegarLoop]: Abstraction has 11953 states and 33086 transitions. [2022-03-15 14:05:46,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:46,019 INFO L276 IsEmpty]: Start isEmpty. Operand 11953 states and 33086 transitions. [2022-03-15 14:05:46,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:05:46,036 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:05:46,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:05:46,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2022-03-15 14:05:46,037 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:05:46,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:05:46,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1250798528, now seen corresponding path program 21 times [2022-03-15 14:05:46,037 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:05:46,037 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527084526] [2022-03-15 14:05:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:05:46,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:05:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:05:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:05:46,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:05:46,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527084526] [2022-03-15 14:05:46,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527084526] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:05:46,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800380504] [2022-03-15 14:05:46,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 14:05:46,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:05:46,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:05:46,819 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:05:46,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-15 14:05:47,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-03-15 14:05:47,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:05:47,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-15 14:05:47,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:05:48,030 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 14:05:48,030 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 28 [2022-03-15 14:05:48,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:05:48,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 14:05:48,138 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800380504] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:05:48,139 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 14:05:48,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [30] total 48 [2022-03-15 14:05:48,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519524841] [2022-03-15 14:05:48,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:05:48,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 14:05:48,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:05:48,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 14:05:48,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2021, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 14:05:48,140 INFO L87 Difference]: Start difference. First operand 11953 states and 33086 transitions. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:50,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:05:50,682 INFO L93 Difference]: Finished difference Result 20064 states and 55427 transitions. [2022-03-15 14:05:50,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 14:05:50,682 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:05:50,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:05:50,720 INFO L225 Difference]: With dead ends: 20064 [2022-03-15 14:05:50,720 INFO L226 Difference]: Without dead ends: 20064 [2022-03-15 14:05:50,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=768, Invalid=5082, Unknown=2, NotChecked=0, Total=5852 [2022-03-15 14:05:50,721 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 1508 mSDsluCounter, 4095 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 4438 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:05:50,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1508 Valid, 4438 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1203 Invalid, 0 Unknown, 177 Unchecked, 0.5s Time] [2022-03-15 14:05:50,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20064 states. [2022-03-15 14:05:50,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20064 to 11957. [2022-03-15 14:05:50,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11957 states, 11956 states have (on average 2.768902643024423) internal successors, (33105), 11956 states have internal predecessors, (33105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11957 states to 11957 states and 33105 transitions. [2022-03-15 14:05:50,978 INFO L78 Accepts]: Start accepts. Automaton has 11957 states and 33105 transitions. Word has length 181 [2022-03-15 14:05:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:05:50,978 INFO L470 AbstractCegarLoop]: Abstraction has 11957 states and 33105 transitions. [2022-03-15 14:05:50,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 11957 states and 33105 transitions. [2022-03-15 14:05:50,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:05:50,995 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:05:50,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:05:51,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-03-15 14:05:51,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:05:51,196 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:05:51,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:05:51,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1635138488, now seen corresponding path program 13 times [2022-03-15 14:05:51,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:05:51,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803944300] [2022-03-15 14:05:51,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:05:51,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:05:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:05:51,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:05:51,441 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:05:51,441 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803944300] [2022-03-15 14:05:51,441 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803944300] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:05:51,441 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:05:51,441 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:05:51,442 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296149216] [2022-03-15 14:05:51,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:05:51,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:05:51,442 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:05:51,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:05:51,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:05:51,442 INFO L87 Difference]: Start difference. First operand 11957 states and 33105 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:05:51,972 INFO L93 Difference]: Finished difference Result 19118 states and 52910 transitions. [2022-03-15 14:05:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 14:05:51,973 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:05:51,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:05:52,008 INFO L225 Difference]: With dead ends: 19118 [2022-03-15 14:05:52,009 INFO L226 Difference]: Without dead ends: 19118 [2022-03-15 14:05:52,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 14:05:52,009 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 1214 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 3139 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:05:52,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1214 Valid, 3139 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:05:52,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19118 states. [2022-03-15 14:05:52,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19118 to 11955. [2022-03-15 14:05:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11955 states, 11954 states have (on average 2.768780324577547) internal successors, (33098), 11954 states have internal predecessors, (33098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:52,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11955 states to 11955 states and 33098 transitions. [2022-03-15 14:05:52,253 INFO L78 Accepts]: Start accepts. Automaton has 11955 states and 33098 transitions. Word has length 181 [2022-03-15 14:05:52,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:05:52,253 INFO L470 AbstractCegarLoop]: Abstraction has 11955 states and 33098 transitions. [2022-03-15 14:05:52,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:05:52,253 INFO L276 IsEmpty]: Start isEmpty. Operand 11955 states and 33098 transitions. [2022-03-15 14:05:52,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:05:52,269 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:05:52,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:05:52,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2022-03-15 14:05:52,269 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:05:52,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:05:52,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2058845866, now seen corresponding path program 22 times [2022-03-15 14:05:52,269 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:05:52,270 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6111009] [2022-03-15 14:05:52,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:05:52,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:05:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:05:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 14:05:53,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:05:53,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6111009] [2022-03-15 14:05:53,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6111009] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 14:05:53,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865653557] [2022-03-15 14:05:53,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 14:05:53,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:05:53,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 14:05:53,167 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 14:05:53,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-15 14:05:53,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 14:05:53,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 14:05:53,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-15 14:05:53,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 14:05:54,069 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 14:05:54,231 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:05:54,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 14:05:54,947 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-03-15 14:05:54,947 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 26 [2022-03-15 14:05:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 14:05:55,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 14:06:05,673 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_6072 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_6072))) (let ((.cse5 (select .cse7 c_~get2~0.base)) (.cse4 (select .cse7 ~get1~0.base)) (.cse6 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse2 (select .cse4 (+ c_~get1~0.offset .cse6))) (.cse3 (select .cse5 (+ c_~get2~0.offset .cse6))) (.cse1 (select .cse5 c_~get2~0.offset)) (.cse0 (select .cse4 c_~get1~0.offset))) (or (= .cse0 .cse1) (<= (+ .cse2 1) .cse3) (= .cse2 .cse3) (< .cse1 .cse0)))))) is different from false [2022-03-15 14:06:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:06:05,844 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865653557] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 14:06:05,844 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 14:06:05,844 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [32, 29] total 69 [2022-03-15 14:06:05,844 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409446295] [2022-03-15 14:06:05,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:06:05,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 14:06:05,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:06:05,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 14:06:05,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=4188, Unknown=16, NotChecked=132, Total=4692 [2022-03-15 14:06:05,845 INFO L87 Difference]: Start difference. First operand 11955 states and 33098 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:06:28,170 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((~get1~0.base Int) (v_ArrVal_6072 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_6072))) (let ((.cse5 (select .cse7 c_~get2~0.base)) (.cse4 (select .cse7 ~get1~0.base)) (.cse6 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse2 (select .cse4 (+ c_~get1~0.offset .cse6))) (.cse3 (select .cse5 (+ c_~get2~0.offset .cse6))) (.cse1 (select .cse5 c_~get2~0.offset)) (.cse0 (select .cse4 c_~get1~0.offset))) (or (= .cse0 .cse1) (<= (+ .cse2 1) .cse3) (= .cse2 .cse3) (< .cse1 .cse0)))))) (or (< |c_thread2Thread1of1ForFork1_#t~mem11| |c_thread2Thread1of1ForFork1_#t~mem12|) (<= (+ |c_thread1Thread1of1ForFork0_#t~mem4| 1) |c_thread1Thread1of1ForFork0_#t~mem5|))) is different from false [2022-03-15 14:06:30,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:06:30,877 INFO L93 Difference]: Finished difference Result 18459 states and 50792 transitions. [2022-03-15 14:06:30,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 14:06:30,878 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:06:30,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:06:30,917 INFO L225 Difference]: With dead ends: 18459 [2022-03-15 14:06:30,917 INFO L226 Difference]: Without dead ends: 18459 [2022-03-15 14:06:30,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 328 SyntacticMatches, 4 SemanticMatches, 90 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2608 ImplicationChecksByTransitivity, 35.9s TimeCoverageRelationStatistics Valid=659, Invalid=7320, Unknown=39, NotChecked=354, Total=8372 [2022-03-15 14:06:30,918 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 658 mSDsluCounter, 3796 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 4196 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 767 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 14:06:30,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 4196 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 855 Invalid, 0 Unknown, 767 Unchecked, 0.5s Time] [2022-03-15 14:06:30,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18459 states. [2022-03-15 14:06:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18459 to 11986. [2022-03-15 14:06:31,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11986 states, 11985 states have (on average 2.7677930746766792) internal successors, (33172), 11985 states have internal predecessors, (33172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:06:31,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11986 states to 11986 states and 33172 transitions. [2022-03-15 14:06:31,192 INFO L78 Accepts]: Start accepts. Automaton has 11986 states and 33172 transitions. Word has length 181 [2022-03-15 14:06:31,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:06:31,193 INFO L470 AbstractCegarLoop]: Abstraction has 11986 states and 33172 transitions. [2022-03-15 14:06:31,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:06:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand 11986 states and 33172 transitions. [2022-03-15 14:06:31,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:06:31,210 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:06:31,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:06:31,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-03-15 14:06:31,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 14:06:31,434 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:06:31,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:06:31,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1802319210, now seen corresponding path program 14 times [2022-03-15 14:06:31,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:06:31,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589122558] [2022-03-15 14:06:31,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:06:31,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:06:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 14:06:31,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 14:06:31,717 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 14:06:31,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589122558] [2022-03-15 14:06:31,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589122558] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 14:06:31,717 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 14:06:31,718 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-03-15 14:06:31,718 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488230799] [2022-03-15 14:06:31,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 14:06:31,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 14:06:31,718 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 14:06:31,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 14:06:31,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-03-15 14:06:31,718 INFO L87 Difference]: Start difference. First operand 11986 states and 33172 transitions. Second operand has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:06:32,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 14:06:32,356 INFO L93 Difference]: Finished difference Result 19703 states and 54525 transitions. [2022-03-15 14:06:32,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 14:06:32,357 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-03-15 14:06:32,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 14:06:32,390 INFO L225 Difference]: With dead ends: 19703 [2022-03-15 14:06:32,390 INFO L226 Difference]: Without dead ends: 19703 [2022-03-15 14:06:32,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=266, Invalid=856, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 14:06:32,390 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1014 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 14:06:32,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1014 Valid, 3300 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 14:06:32,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2022-03-15 14:06:32,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 11990. [2022-03-15 14:06:32,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11990 states, 11989 states have (on average 2.768120777379264) internal successors, (33187), 11989 states have internal predecessors, (33187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:06:32,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11990 states to 11990 states and 33187 transitions. [2022-03-15 14:06:32,632 INFO L78 Accepts]: Start accepts. Automaton has 11990 states and 33187 transitions. Word has length 181 [2022-03-15 14:06:32,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 14:06:32,632 INFO L470 AbstractCegarLoop]: Abstraction has 11990 states and 33187 transitions. [2022-03-15 14:06:32,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 19 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 14:06:32,632 INFO L276 IsEmpty]: Start isEmpty. Operand 11990 states and 33187 transitions. [2022-03-15 14:06:32,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-03-15 14:06:32,648 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 14:06:32,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:06:32,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2022-03-15 14:06:32,648 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 14:06:32,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 14:06:32,648 INFO L85 PathProgramCache]: Analyzing trace with hash -382528888, now seen corresponding path program 23 times [2022-03-15 14:06:32,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 14:06:32,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411264680] [2022-03-15 14:06:32,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 14:06:32,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 14:06:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2022-03-15 14:06:33,100 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 14:06:33,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2022-03-15 14:06:33,101 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 182 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 20 known predicates. [2022-03-15 14:06:33,102 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 14:06:33,102 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 14:06:33,104 INFO L732 BasicCegarLoop]: Path program histogram: [74, 64, 48, 37, 23, 14, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 14:06:33,105 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 14:06:33,105 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 14:06:33,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 02:06:33 BasicIcfg [2022-03-15 14:06:33,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 14:06:33,106 INFO L158 Benchmark]: Toolchain (without parser) took 842030.27ms. Allocated memory was 200.3MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 147.6MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2022-03-15 14:06:33,106 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 200.3MB. Free memory is still 163.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 14:06:33,106 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.76ms. Allocated memory is still 200.3MB. Free memory was 147.4MB in the beginning and 172.8MB in the end (delta: -25.4MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. [2022-03-15 14:06:33,106 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.57ms. Allocated memory is still 200.3MB. Free memory was 172.4MB in the beginning and 170.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 14:06:33,106 INFO L158 Benchmark]: Boogie Preprocessor took 18.56ms. Allocated memory is still 200.3MB. Free memory was 170.7MB in the beginning and 169.1MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 14:06:33,106 INFO L158 Benchmark]: RCFGBuilder took 362.68ms. Allocated memory is still 200.3MB. Free memory was 169.1MB in the beginning and 151.2MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-03-15 14:06:33,106 INFO L158 Benchmark]: TraceAbstraction took 841411.76ms. Allocated memory was 200.3MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 150.8MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2022-03-15 14:06:33,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 200.3MB. Free memory is still 163.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 195.76ms. Allocated memory is still 200.3MB. Free memory was 147.4MB in the beginning and 172.8MB in the end (delta: -25.4MB). Peak memory consumption was 9.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.57ms. Allocated memory is still 200.3MB. Free memory was 172.4MB in the beginning and 170.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.56ms. Allocated memory is still 200.3MB. Free memory was 170.7MB in the beginning and 169.1MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 362.68ms. Allocated memory is still 200.3MB. Free memory was 169.1MB in the beginning and 151.2MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 841411.76ms. Allocated memory was 200.3MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 150.8MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 182 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 20 known predicates. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 182 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 20 known predicates. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 182 with TraceHistMax 1,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 20 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 292 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 841.2s, OverallIterations: 305, TraceHistogramMax: 2, PathProgramHistogramMax: 74, EmptinessCheckTime: 6.6s, AutomataDifference: 414.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 372076 SdHoareTripleChecker+Valid, 111.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 372076 mSDsluCounter, 1168701 SdHoareTripleChecker+Invalid, 93.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 45386 IncrementalHoareTripleChecker+Unchecked, 1081428 mSDsCounter, 6011 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 317941 IncrementalHoareTripleChecker+Invalid, 369338 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6011 mSolverCounterUnsat, 112609 mSDtfsCounter, 317941 mSolverCounterSat, 2.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35546 GetRequests, 21551 SyntacticMatches, 214 SemanticMatches, 13781 ConstructedPredicates, 33 IntricatePredicates, 27 DeprecatedPredicates, 184104 ImplicationChecksByTransitivity, 386.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19823occurred in iteration=106, InterpolantAutomatonStates: 8033, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 94.7s AutomataMinimizationTime, 304 MinimizatonAttempts, 3002652 StatesRemovedByMinimization, 300 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.4s SsaConstructionTime, 5.2s SatisfiabilityAnalysisTime, 288.7s InterpolantComputationTime, 65335 NumberOfCodeBlocks, 64948 NumberOfCodeBlocksAsserted, 405 NumberOfCheckSat, 74584 ConstructedInterpolants, 727 QuantifiedInterpolants, 470065 SizeOfPredicates, 1702 NumberOfNonLiveVariables, 24718 ConjunctsInSsa, 3281 ConjunctsInUnsatCore, 429 InterpolantComputations, 264 PerfectInterpolantSequences, 882/1132 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown