/usr/bin/java -Xmx16000000000 -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-dev-bc79526 [2022-01-18 01:08:41,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 01:08:41,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 01:08:41,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 01:08:41,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 01:08:41,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 01:08:41,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 01:08:41,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 01:08:41,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 01:08:41,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 01:08:41,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 01:08:41,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 01:08:41,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 01:08:41,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 01:08:41,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 01:08:41,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 01:08:41,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 01:08:41,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 01:08:41,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 01:08:41,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 01:08:41,376 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 [2022-01-18 01:08:41,401 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 01:08:41,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 01:08:41,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 01:08:41,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 01:08:41,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 01:08:41,403 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 01:08:41,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 01:08:41,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 01:08:41,404 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 01:08:41,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 01:08:41,405 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 01:08:41,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 01:08:41,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 01:08:41,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 01:08:41,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 01:08:41,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 01:08:41,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 01:08:41,406 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 01:08:41,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 01:08:41,406 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 01:08:41,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 01:08:41,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 01:08:41,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 01:08:41,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 01:08:41,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 01:08:41,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 01:08:41,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 01:08:41,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 01:08:41,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 01:08:41,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 01:08:41,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 01:08:41,407 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 01:08:41,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 01:08:41,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 01:08:41,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 01:08:41,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 01:08:41,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 01:08:41,647 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 01:08:41,647 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 01:08:41,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2022-01-18 01:08:41,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaa4647ea/2dc3d2b9230748f9a56c77c231761614/FLAGffd82d455 [2022-01-18 01:08:42,053 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 01:08:42,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2022-01-18 01:08:42,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaa4647ea/2dc3d2b9230748f9a56c77c231761614/FLAGffd82d455 [2022-01-18 01:08:42,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaa4647ea/2dc3d2b9230748f9a56c77c231761614 [2022-01-18 01:08:42,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 01:08:42,071 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 01:08:42,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 01:08:42,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 01:08:42,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 01:08:42,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:08:42" (1/1) ... [2022-01-18 01:08:42,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d24306c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:08:42, skipping insertion in model container [2022-01-18 01:08:42,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:08:42" (1/1) ... [2022-01-18 01:08:42,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 01:08:42,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 01:08:42,251 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] [2022-01-18 01:08:42,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 01:08:42,264 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 01:08:42,282 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] [2022-01-18 01:08:42,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 01:08:42,295 INFO L208 MainTranslator]: Completed translation [2022-01-18 01:08:42,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:08:42 WrapperNode [2022-01-18 01:08:42,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 01:08:42,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 01:08:42,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 01:08:42,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 01:08:42,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:08:42" (1/1) ... [2022-01-18 01:08:42,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:08:42" (1/1) ... [2022-01-18 01:08:42,339 INFO L137 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2022-01-18 01:08:42,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 01:08:42,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 01:08:42,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 01:08:42,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 01:08:42,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:08:42" (1/1) ... [2022-01-18 01:08:42,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:08:42" (1/1) ... [2022-01-18 01:08:42,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:08:42" (1/1) ... [2022-01-18 01:08:42,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:08:42" (1/1) ... [2022-01-18 01:08:42,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:08:42" (1/1) ... [2022-01-18 01:08:42,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:08:42" (1/1) ... [2022-01-18 01:08:42,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:08:42" (1/1) ... [2022-01-18 01:08:42,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 01:08:42,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 01:08:42,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 01:08:42,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 01:08:42,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:08:42" (1/1) ... [2022-01-18 01:08:42,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 01:08:42,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:08:42,428 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) [2022-01-18 01:08:42,457 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 [2022-01-18 01:08:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 01:08:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 01:08:42,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 01:08:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 01:08:42,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 01:08:42,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 01:08:42,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 01:08:42,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 01:08:42,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-18 01:08:42,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 01:08:42,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 01:08:42,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 01:08:42,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 01:08:42,481 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 01:08:42,574 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 01:08:42,575 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 01:08:42,889 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 01:08:42,899 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 01:08:42,899 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-18 01:08:42,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:08:42 BoogieIcfgContainer [2022-01-18 01:08:42,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 01:08:42,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 01:08:42,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 01:08:42,908 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 01:08:42,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:08:42" (1/3) ... [2022-01-18 01:08:42,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458db264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:08:42, skipping insertion in model container [2022-01-18 01:08:42,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:08:42" (2/3) ... [2022-01-18 01:08:42,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458db264 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:08:42, skipping insertion in model container [2022-01-18 01:08:42,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:08:42" (3/3) ... [2022-01-18 01:08:42,911 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2022-01-18 01:08:42,917 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 01:08:42,917 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 01:08:42,917 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 01:08:42,917 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 01:08:42,963 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,963 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,964 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,964 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,964 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,965 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,965 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,965 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,966 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,967 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,967 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,967 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,967 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,967 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,968 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,968 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,968 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,968 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,969 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,970 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,970 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,970 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,970 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,970 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,973 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,973 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,973 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,973 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,973 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,973 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,974 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,974 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,974 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,974 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,975 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,975 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,975 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,976 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,976 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,976 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,976 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,976 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,977 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,977 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,977 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,977 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,977 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,977 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,977 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,978 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,978 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,978 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,978 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,978 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,978 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,978 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,979 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,979 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,979 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,979 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,980 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,980 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,980 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,980 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,981 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,981 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,981 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,982 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,982 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,982 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,982 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,982 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,983 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,983 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,983 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,983 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,983 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,984 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,984 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,984 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,984 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,984 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,985 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,985 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,985 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,985 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,985 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,985 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,986 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,986 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,986 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,986 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,986 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,986 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,988 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,988 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,988 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,988 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,988 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,988 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,989 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,989 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,989 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,989 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,989 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,989 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,990 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,990 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,991 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,991 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,995 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,995 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,995 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,998 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,999 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,999 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,999 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,999 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:42,999 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:43,001 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:43,001 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:43,001 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:43,002 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:43,002 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:43,002 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:43,002 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:43,002 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:43,002 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:43,002 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:43,002 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:08:43,005 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 01:08:43,040 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 01:08:43,046 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, 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 [2022-01-18 01:08:43,046 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 01:08:43,057 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 228 places, 246 transitions, 508 flow [2022-01-18 01:08:43,257 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) [2022-01-18 01:08:43,275 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) [2022-01-18 01:08:43,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 01:08:43,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:43,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:43,325 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:43,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:43,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1888425211, now seen corresponding path program 1 times [2022-01-18 01:08:43,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:43,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212530401] [2022-01-18 01:08:43,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:43,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:43,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:43,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:43,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212530401] [2022-01-18 01:08:43,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212530401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:43,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:43,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 01:08:43,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310070669] [2022-01-18 01:08:43,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:43,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 01:08:43,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:43,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 01:08:43,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 01:08:43,651 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) [2022-01-18 01:08:43,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:43,747 INFO L93 Difference]: Finished difference Result 5062 states and 14867 transitions. [2022-01-18 01:08:43,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 01:08:43,749 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 [2022-01-18 01:08:43,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:43,791 INFO L225 Difference]: With dead ends: 5062 [2022-01-18 01:08:43,792 INFO L226 Difference]: Without dead ends: 5055 [2022-01-18 01:08:43,793 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 [2022-01-18 01:08:43,796 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 [2022-01-18 01:08:43,797 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] [2022-01-18 01:08:43,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5055 states. [2022-01-18 01:08:44,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5055 to 5055. [2022-01-18 01:08:44,029 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) [2022-01-18 01:08:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5055 states to 5055 states and 14860 transitions. [2022-01-18 01:08:44,057 INFO L78 Accepts]: Start accepts. Automaton has 5055 states and 14860 transitions. Word has length 139 [2022-01-18 01:08:44,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:44,058 INFO L470 AbstractCegarLoop]: Abstraction has 5055 states and 14860 transitions. [2022-01-18 01:08:44,058 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) [2022-01-18 01:08:44,058 INFO L276 IsEmpty]: Start isEmpty. Operand 5055 states and 14860 transitions. [2022-01-18 01:08:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-18 01:08:44,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:44,076 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] [2022-01-18 01:08:44,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 01:08:44,077 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:44,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:44,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1099516835, now seen corresponding path program 1 times [2022-01-18 01:08:44,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:44,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17125498] [2022-01-18 01:08:44,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:44,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:44,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:44,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17125498] [2022-01-18 01:08:44,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17125498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:44,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:44,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 01:08:44,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667267284] [2022-01-18 01:08:44,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:44,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 01:08:44,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:44,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 01:08:44,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 01:08:44,260 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) [2022-01-18 01:08:44,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:44,342 INFO L93 Difference]: Finished difference Result 5771 states and 16742 transitions. [2022-01-18 01:08:44,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 01:08:44,342 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 [2022-01-18 01:08:44,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:44,374 INFO L225 Difference]: With dead ends: 5771 [2022-01-18 01:08:44,374 INFO L226 Difference]: Without dead ends: 5771 [2022-01-18 01:08:44,378 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 [2022-01-18 01:08:44,379 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 [2022-01-18 01:08:44,380 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] [2022-01-18 01:08:44,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2022-01-18 01:08:44,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5194. [2022-01-18 01:08:44,618 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) [2022-01-18 01:08:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 15260 transitions. [2022-01-18 01:08:44,656 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 15260 transitions. Word has length 139 [2022-01-18 01:08:44,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:44,679 INFO L470 AbstractCegarLoop]: Abstraction has 5194 states and 15260 transitions. [2022-01-18 01:08:44,680 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) [2022-01-18 01:08:44,680 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 15260 transitions. [2022-01-18 01:08:44,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-18 01:08:44,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:44,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:44,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 01:08:44,708 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:44,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:44,709 INFO L85 PathProgramCache]: Analyzing trace with hash 689073211, now seen corresponding path program 1 times [2022-01-18 01:08:44,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:44,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499444521] [2022-01-18 01:08:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:44,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:44,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:44,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499444521] [2022-01-18 01:08:44,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499444521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:44,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:44,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 01:08:44,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106861913] [2022-01-18 01:08:44,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:44,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 01:08:44,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 01:08:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 01:08:44,839 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) [2022-01-18 01:08:44,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:44,942 INFO L93 Difference]: Finished difference Result 6050 states and 17445 transitions. [2022-01-18 01:08:44,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 01:08:44,943 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 [2022-01-18 01:08:44,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:44,987 INFO L225 Difference]: With dead ends: 6050 [2022-01-18 01:08:44,987 INFO L226 Difference]: Without dead ends: 6050 [2022-01-18 01:08:44,988 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 [2022-01-18 01:08:44,993 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 [2022-01-18 01:08:44,994 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] [2022-01-18 01:08:45,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2022-01-18 01:08:45,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 5340. [2022-01-18 01:08:45,113 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) [2022-01-18 01:08:45,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 15677 transitions. [2022-01-18 01:08:45,135 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 15677 transitions. Word has length 140 [2022-01-18 01:08:45,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:45,137 INFO L470 AbstractCegarLoop]: Abstraction has 5340 states and 15677 transitions. [2022-01-18 01:08:45,137 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) [2022-01-18 01:08:45,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 15677 transitions. [2022-01-18 01:08:45,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:45,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:45,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:45,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 01:08:45,151 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:45,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:45,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1007108905, now seen corresponding path program 1 times [2022-01-18 01:08:45,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:45,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540753971] [2022-01-18 01:08:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:45,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:45,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:45,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:45,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540753971] [2022-01-18 01:08:45,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540753971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:45,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:45,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:08:45,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239364081] [2022-01-18 01:08:45,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:45,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:08:45,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:45,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:08:45,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:08:45,755 INFO L87 Difference]: Start difference. First operand 5340 states and 15677 transitions. Second operand has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 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) [2022-01-18 01:08:47,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:47,429 INFO L93 Difference]: Finished difference Result 17892 states and 52122 transitions. [2022-01-18 01:08:47,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 01:08:47,430 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 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 [2022-01-18 01:08:47,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:47,494 INFO L225 Difference]: With dead ends: 17892 [2022-01-18 01:08:47,494 INFO L226 Difference]: Without dead ends: 17721 [2022-01-18 01:08:47,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=458, Invalid=1612, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 01:08:47,496 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 3865 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3865 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:08:47,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3865 Valid, 3058 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:08:47,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17721 states. [2022-01-18 01:08:47,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17721 to 9090. [2022-01-18 01:08:47,825 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) [2022-01-18 01:08:47,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9090 states to 9090 states and 26744 transitions. [2022-01-18 01:08:47,857 INFO L78 Accepts]: Start accepts. Automaton has 9090 states and 26744 transitions. Word has length 141 [2022-01-18 01:08:47,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:47,857 INFO L470 AbstractCegarLoop]: Abstraction has 9090 states and 26744 transitions. [2022-01-18 01:08:47,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.05) internal successors, (141), 20 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) [2022-01-18 01:08:47,857 INFO L276 IsEmpty]: Start isEmpty. Operand 9090 states and 26744 transitions. [2022-01-18 01:08:47,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:47,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:47,878 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] [2022-01-18 01:08:47,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 01:08:47,879 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:47,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:47,879 INFO L85 PathProgramCache]: Analyzing trace with hash -810308121, now seen corresponding path program 1 times [2022-01-18 01:08:47,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:47,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592878012] [2022-01-18 01:08:47,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:47,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:47,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:47,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:47,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592878012] [2022-01-18 01:08:47,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592878012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:47,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:47,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 01:08:47,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990956076] [2022-01-18 01:08:47,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:47,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 01:08:47,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:47,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 01:08:47,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 01:08:47,916 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) [2022-01-18 01:08:47,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:47,975 INFO L93 Difference]: Finished difference Result 9363 states and 26702 transitions. [2022-01-18 01:08:47,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 01:08:47,975 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 [2022-01-18 01:08:47,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:48,002 INFO L225 Difference]: With dead ends: 9363 [2022-01-18 01:08:48,003 INFO L226 Difference]: Without dead ends: 9363 [2022-01-18 01:08:48,003 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 [2022-01-18 01:08:48,004 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 [2022-01-18 01:08:48,004 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] [2022-01-18 01:08:48,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9363 states. [2022-01-18 01:08:48,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9363 to 9189. [2022-01-18 01:08:48,221 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) [2022-01-18 01:08:48,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9189 states to 9189 states and 26335 transitions. [2022-01-18 01:08:48,246 INFO L78 Accepts]: Start accepts. Automaton has 9189 states and 26335 transitions. Word has length 141 [2022-01-18 01:08:48,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:48,246 INFO L470 AbstractCegarLoop]: Abstraction has 9189 states and 26335 transitions. [2022-01-18 01:08:48,246 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) [2022-01-18 01:08:48,246 INFO L276 IsEmpty]: Start isEmpty. Operand 9189 states and 26335 transitions. [2022-01-18 01:08:48,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:48,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:48,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:48,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 01:08:48,268 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:48,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:48,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1850227483, now seen corresponding path program 1 times [2022-01-18 01:08:48,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:48,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933530205] [2022-01-18 01:08:48,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:48,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:48,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:48,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933530205] [2022-01-18 01:08:48,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933530205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:48,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:48,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 01:08:48,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940744809] [2022-01-18 01:08:48,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:48,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 01:08:48,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:48,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 01:08:48,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 01:08:48,313 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) [2022-01-18 01:08:48,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:48,443 INFO L93 Difference]: Finished difference Result 8228 states and 23405 transitions. [2022-01-18 01:08:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 01:08:48,449 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 [2022-01-18 01:08:48,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:48,475 INFO L225 Difference]: With dead ends: 8228 [2022-01-18 01:08:48,475 INFO L226 Difference]: Without dead ends: 8228 [2022-01-18 01:08:48,475 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 [2022-01-18 01:08:48,476 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 [2022-01-18 01:08:48,476 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] [2022-01-18 01:08:48,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8228 states. [2022-01-18 01:08:48,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8228 to 8162. [2022-01-18 01:08:48,601 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) [2022-01-18 01:08:48,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8162 states to 8162 states and 23294 transitions. [2022-01-18 01:08:48,695 INFO L78 Accepts]: Start accepts. Automaton has 8162 states and 23294 transitions. Word has length 141 [2022-01-18 01:08:48,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:48,695 INFO L470 AbstractCegarLoop]: Abstraction has 8162 states and 23294 transitions. [2022-01-18 01:08:48,695 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) [2022-01-18 01:08:48,695 INFO L276 IsEmpty]: Start isEmpty. Operand 8162 states and 23294 transitions. [2022-01-18 01:08:48,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:48,718 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:48,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:48,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 01:08:48,719 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:48,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:48,723 INFO L85 PathProgramCache]: Analyzing trace with hash 627322787, now seen corresponding path program 1 times [2022-01-18 01:08:48,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:48,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619561720] [2022-01-18 01:08:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:48,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:48,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:48,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:48,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619561720] [2022-01-18 01:08:48,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619561720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:48,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:48,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 01:08:48,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14726919] [2022-01-18 01:08:48,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:48,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 01:08:48,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:48,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 01:08:48,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 01:08:48,774 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) [2022-01-18 01:08:48,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:48,827 INFO L93 Difference]: Finished difference Result 8443 states and 23912 transitions. [2022-01-18 01:08:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 01:08:48,828 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 [2022-01-18 01:08:48,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:48,853 INFO L225 Difference]: With dead ends: 8443 [2022-01-18 01:08:48,853 INFO L226 Difference]: Without dead ends: 8443 [2022-01-18 01:08:48,853 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 [2022-01-18 01:08:48,856 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 [2022-01-18 01:08:48,856 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] [2022-01-18 01:08:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8443 states. [2022-01-18 01:08:49,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8443 to 8261. [2022-01-18 01:08:49,030 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) [2022-01-18 01:08:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8261 states to 8261 states and 23515 transitions. [2022-01-18 01:08:49,055 INFO L78 Accepts]: Start accepts. Automaton has 8261 states and 23515 transitions. Word has length 141 [2022-01-18 01:08:49,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:49,056 INFO L470 AbstractCegarLoop]: Abstraction has 8261 states and 23515 transitions. [2022-01-18 01:08:49,056 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) [2022-01-18 01:08:49,056 INFO L276 IsEmpty]: Start isEmpty. Operand 8261 states and 23515 transitions. [2022-01-18 01:08:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:49,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:49,074 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:49,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 01:08:49,075 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:49,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:49,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1619956611, now seen corresponding path program 1 times [2022-01-18 01:08:49,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:49,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268876056] [2022-01-18 01:08:49,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:49,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:49,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:49,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268876056] [2022-01-18 01:08:49,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268876056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:49,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:49,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:08:49,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688969273] [2022-01-18 01:08:49,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:49,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:08:49,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:49,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:08:49,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:08:49,251 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) [2022-01-18 01:08:49,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:49,445 INFO L93 Difference]: Finished difference Result 8550 states and 24135 transitions. [2022-01-18 01:08:49,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 01:08:49,445 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 [2022-01-18 01:08:49,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:49,469 INFO L225 Difference]: With dead ends: 8550 [2022-01-18 01:08:49,470 INFO L226 Difference]: Without dead ends: 8343 [2022-01-18 01:08:49,470 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 [2022-01-18 01:08:49,470 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 117 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:08:49,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 1487 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:08:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8343 states. [2022-01-18 01:08:49,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8343 to 8184. [2022-01-18 01:08:49,614 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) [2022-01-18 01:08:49,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8184 states to 8184 states and 23324 transitions. [2022-01-18 01:08:49,636 INFO L78 Accepts]: Start accepts. Automaton has 8184 states and 23324 transitions. Word has length 141 [2022-01-18 01:08:49,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:49,637 INFO L470 AbstractCegarLoop]: Abstraction has 8184 states and 23324 transitions. [2022-01-18 01:08:49,639 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) [2022-01-18 01:08:49,639 INFO L276 IsEmpty]: Start isEmpty. Operand 8184 states and 23324 transitions. [2022-01-18 01:08:49,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:49,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:49,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:49,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 01:08:49,659 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:49,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:49,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1621927651, now seen corresponding path program 2 times [2022-01-18 01:08:49,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:49,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976932684] [2022-01-18 01:08:49,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:49,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:49,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:49,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976932684] [2022-01-18 01:08:49,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976932684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:49,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:49,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:08:49,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112385318] [2022-01-18 01:08:49,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:49,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:08:49,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:49,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:08:49,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:08:49,791 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) [2022-01-18 01:08:49,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:50,000 INFO L93 Difference]: Finished difference Result 8366 states and 23739 transitions. [2022-01-18 01:08:50,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:08:50,000 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 [2022-01-18 01:08:50,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:50,026 INFO L225 Difference]: With dead ends: 8366 [2022-01-18 01:08:50,026 INFO L226 Difference]: Without dead ends: 8259 [2022-01-18 01:08:50,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-01-18 01:08:50,027 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 50 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:08:50,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 1399 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:08:50,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8259 states. [2022-01-18 01:08:50,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8259 to 8188. [2022-01-18 01:08:50,165 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) [2022-01-18 01:08:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 23331 transitions. [2022-01-18 01:08:50,187 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 23331 transitions. Word has length 141 [2022-01-18 01:08:50,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:50,187 INFO L470 AbstractCegarLoop]: Abstraction has 8188 states and 23331 transitions. [2022-01-18 01:08:50,188 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) [2022-01-18 01:08:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 23331 transitions. [2022-01-18 01:08:50,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:50,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:50,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:50,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 01:08:50,202 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:50,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:50,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1818903025, now seen corresponding path program 3 times [2022-01-18 01:08:50,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:50,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925009273] [2022-01-18 01:08:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:50,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:50,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:50,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:50,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925009273] [2022-01-18 01:08:50,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925009273] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:50,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:50,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:08:50,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629351770] [2022-01-18 01:08:50,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:50,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:08:50,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:50,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:08:50,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:08:50,307 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) [2022-01-18 01:08:50,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:50,480 INFO L93 Difference]: Finished difference Result 8340 states and 23672 transitions. [2022-01-18 01:08:50,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 01:08:50,481 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 [2022-01-18 01:08:50,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:50,501 INFO L225 Difference]: With dead ends: 8340 [2022-01-18 01:08:50,501 INFO L226 Difference]: Without dead ends: 8210 [2022-01-18 01:08:50,502 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 [2022-01-18 01:08:50,502 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 [2022-01-18 01:08:50,502 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] [2022-01-18 01:08:50,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8210 states. [2022-01-18 01:08:50,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8210 to 8162. [2022-01-18 01:08:50,692 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) [2022-01-18 01:08:50,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8162 states to 8162 states and 23268 transitions. [2022-01-18 01:08:50,713 INFO L78 Accepts]: Start accepts. Automaton has 8162 states and 23268 transitions. Word has length 141 [2022-01-18 01:08:50,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:50,713 INFO L470 AbstractCegarLoop]: Abstraction has 8162 states and 23268 transitions. [2022-01-18 01:08:50,714 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) [2022-01-18 01:08:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 8162 states and 23268 transitions. [2022-01-18 01:08:50,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:50,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:50,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:50,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 01:08:50,729 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:50,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:50,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1913029597, now seen corresponding path program 4 times [2022-01-18 01:08:50,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:50,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538024038] [2022-01-18 01:08:50,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:50,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:50,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:50,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538024038] [2022-01-18 01:08:50,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538024038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:50,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:50,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:08:50,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77737532] [2022-01-18 01:08:50,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:50,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:08:50,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:50,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:08:50,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:08:50,847 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) [2022-01-18 01:08:50,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:50,992 INFO L93 Difference]: Finished difference Result 8502 states and 24043 transitions. [2022-01-18 01:08:50,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 01:08:50,992 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 [2022-01-18 01:08:50,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:51,012 INFO L225 Difference]: With dead ends: 8502 [2022-01-18 01:08:51,012 INFO L226 Difference]: Without dead ends: 8382 [2022-01-18 01:08:51,012 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 [2022-01-18 01:08:51,013 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 126 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:08:51,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 861 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:08:51,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8382 states. [2022-01-18 01:08:51,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8382 to 8226. [2022-01-18 01:08:51,151 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) [2022-01-18 01:08:51,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8226 states to 8226 states and 23432 transitions. [2022-01-18 01:08:51,173 INFO L78 Accepts]: Start accepts. Automaton has 8226 states and 23432 transitions. Word has length 141 [2022-01-18 01:08:51,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:51,174 INFO L470 AbstractCegarLoop]: Abstraction has 8226 states and 23432 transitions. [2022-01-18 01:08:51,174 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) [2022-01-18 01:08:51,174 INFO L276 IsEmpty]: Start isEmpty. Operand 8226 states and 23432 transitions. [2022-01-18 01:08:51,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:51,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:51,189 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] [2022-01-18 01:08:51,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 01:08:51,189 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:51,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:51,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1405816603, now seen corresponding path program 5 times [2022-01-18 01:08:51,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:51,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190702244] [2022-01-18 01:08:51,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:51,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:51,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:51,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190702244] [2022-01-18 01:08:51,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190702244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:51,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:51,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:08:51,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572462302] [2022-01-18 01:08:51,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:51,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:08:51,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:08:51,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:08:51,327 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) [2022-01-18 01:08:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:51,498 INFO L93 Difference]: Finished difference Result 8414 states and 23859 transitions. [2022-01-18 01:08:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 01:08:51,499 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 [2022-01-18 01:08:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:51,517 INFO L225 Difference]: With dead ends: 8414 [2022-01-18 01:08:51,517 INFO L226 Difference]: Without dead ends: 8307 [2022-01-18 01:08:51,517 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 [2022-01-18 01:08:51,518 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 60 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 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 [2022-01-18 01:08:51,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1160 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:08:51,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8307 states. [2022-01-18 01:08:51,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8307 to 8230. [2022-01-18 01:08:51,674 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) [2022-01-18 01:08:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8230 states to 8230 states and 23439 transitions. [2022-01-18 01:08:51,699 INFO L78 Accepts]: Start accepts. Automaton has 8230 states and 23439 transitions. Word has length 141 [2022-01-18 01:08:51,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:51,699 INFO L470 AbstractCegarLoop]: Abstraction has 8230 states and 23439 transitions. [2022-01-18 01:08:51,699 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) [2022-01-18 01:08:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand 8230 states and 23439 transitions. [2022-01-18 01:08:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:51,714 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:51,715 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] [2022-01-18 01:08:51,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 01:08:51,715 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:51,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:51,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1602791977, now seen corresponding path program 6 times [2022-01-18 01:08:51,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:51,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254706097] [2022-01-18 01:08:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:51,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:51,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:51,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254706097] [2022-01-18 01:08:51,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254706097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:51,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:51,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:08:51,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054811522] [2022-01-18 01:08:51,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:51,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:08:51,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:51,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:08:51,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:08:51,819 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) [2022-01-18 01:08:52,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:52,004 INFO L93 Difference]: Finished difference Result 8388 states and 23792 transitions. [2022-01-18 01:08:52,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:08:52,004 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 [2022-01-18 01:08:52,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:52,022 INFO L225 Difference]: With dead ends: 8388 [2022-01-18 01:08:52,023 INFO L226 Difference]: Without dead ends: 8254 [2022-01-18 01:08:52,023 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 [2022-01-18 01:08:52,023 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 49 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:08:52,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1379 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:08:52,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8254 states. [2022-01-18 01:08:52,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8254 to 8200. [2022-01-18 01:08:52,177 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) [2022-01-18 01:08:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 23365 transitions. [2022-01-18 01:08:52,202 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 23365 transitions. Word has length 141 [2022-01-18 01:08:52,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:52,202 INFO L470 AbstractCegarLoop]: Abstraction has 8200 states and 23365 transitions. [2022-01-18 01:08:52,202 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) [2022-01-18 01:08:52,202 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 23365 transitions. [2022-01-18 01:08:52,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:52,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:52,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:52,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 01:08:52,247 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:52,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:52,247 INFO L85 PathProgramCache]: Analyzing trace with hash -2098111613, now seen corresponding path program 1 times [2022-01-18 01:08:52,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:52,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233146310] [2022-01-18 01:08:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:52,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:52,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:52,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233146310] [2022-01-18 01:08:52,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233146310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:52,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:52,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:08:52,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107268734] [2022-01-18 01:08:52,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:52,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:08:52,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:52,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:08:52,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:08:52,364 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) [2022-01-18 01:08:52,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:52,498 INFO L93 Difference]: Finished difference Result 8460 states and 23922 transitions. [2022-01-18 01:08:52,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 01:08:52,498 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 [2022-01-18 01:08:52,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:52,513 INFO L225 Difference]: With dead ends: 8460 [2022-01-18 01:08:52,513 INFO L226 Difference]: Without dead ends: 8340 [2022-01-18 01:08:52,513 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 [2022-01-18 01:08:52,514 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 [2022-01-18 01:08:52,514 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] [2022-01-18 01:08:52,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8340 states. [2022-01-18 01:08:52,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8340 to 8204. [2022-01-18 01:08:52,643 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) [2022-01-18 01:08:52,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8204 states to 8204 states and 23353 transitions. [2022-01-18 01:08:52,663 INFO L78 Accepts]: Start accepts. Automaton has 8204 states and 23353 transitions. Word has length 141 [2022-01-18 01:08:52,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:52,663 INFO L470 AbstractCegarLoop]: Abstraction has 8204 states and 23353 transitions. [2022-01-18 01:08:52,664 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) [2022-01-18 01:08:52,664 INFO L276 IsEmpty]: Start isEmpty. Operand 8204 states and 23353 transitions. [2022-01-18 01:08:52,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:52,679 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:52,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:52,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 01:08:52,679 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:52,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:52,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1105477789, now seen corresponding path program 1 times [2022-01-18 01:08:52,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:52,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053535583] [2022-01-18 01:08:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:52,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:52,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:52,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:52,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053535583] [2022-01-18 01:08:52,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053535583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:52,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:52,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 01:08:52,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296583474] [2022-01-18 01:08:52,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:52,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 01:08:52,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:52,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 01:08:52,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 01:08:52,714 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) [2022-01-18 01:08:52,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:52,767 INFO L93 Difference]: Finished difference Result 8223 states and 23294 transitions. [2022-01-18 01:08:52,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 01:08:52,768 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 [2022-01-18 01:08:52,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:52,783 INFO L225 Difference]: With dead ends: 8223 [2022-01-18 01:08:52,784 INFO L226 Difference]: Without dead ends: 8142 [2022-01-18 01:08:52,785 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 [2022-01-18 01:08:52,787 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 [2022-01-18 01:08:52,787 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] [2022-01-18 01:08:52,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8142 states. [2022-01-18 01:08:52,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8142 to 8016. [2022-01-18 01:08:52,909 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) [2022-01-18 01:08:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 22851 transitions. [2022-01-18 01:08:52,927 INFO L78 Accepts]: Start accepts. Automaton has 8016 states and 22851 transitions. Word has length 141 [2022-01-18 01:08:52,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:52,927 INFO L470 AbstractCegarLoop]: Abstraction has 8016 states and 22851 transitions. [2022-01-18 01:08:52,927 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) [2022-01-18 01:08:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 8016 states and 22851 transitions. [2022-01-18 01:08:52,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:52,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:52,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:52,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 01:08:52,941 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:52,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:52,941 INFO L85 PathProgramCache]: Analyzing trace with hash 54678179, now seen corresponding path program 2 times [2022-01-18 01:08:52,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:52,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091679082] [2022-01-18 01:08:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:52,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:53,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:53,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:53,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091679082] [2022-01-18 01:08:53,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091679082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:53,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:53,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:08:53,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000774477] [2022-01-18 01:08:53,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:53,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:08:53,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:53,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:08:53,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:08:53,060 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) [2022-01-18 01:08:53,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:53,204 INFO L93 Difference]: Finished difference Result 8144 states and 23136 transitions. [2022-01-18 01:08:53,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:08:53,204 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 [2022-01-18 01:08:53,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:53,217 INFO L225 Difference]: With dead ends: 8144 [2022-01-18 01:08:53,217 INFO L226 Difference]: Without dead ends: 8043 [2022-01-18 01:08:53,217 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 [2022-01-18 01:08:53,220 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 49 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:08:53,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1180 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:08:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8043 states. [2022-01-18 01:08:53,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8043 to 8020. [2022-01-18 01:08:53,371 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) [2022-01-18 01:08:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8020 states to 8020 states and 22858 transitions. [2022-01-18 01:08:53,389 INFO L78 Accepts]: Start accepts. Automaton has 8020 states and 22858 transitions. Word has length 141 [2022-01-18 01:08:53,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:53,389 INFO L470 AbstractCegarLoop]: Abstraction has 8020 states and 22858 transitions. [2022-01-18 01:08:53,389 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) [2022-01-18 01:08:53,389 INFO L276 IsEmpty]: Start isEmpty. Operand 8020 states and 22858 transitions. [2022-01-18 01:08:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:53,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:53,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:53,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-18 01:08:53,400 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:53,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash 251653553, now seen corresponding path program 3 times [2022-01-18 01:08:53,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:53,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309191353] [2022-01-18 01:08:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:53,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:53,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:53,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:53,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309191353] [2022-01-18 01:08:53,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309191353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:53,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:53,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:08:53,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962822950] [2022-01-18 01:08:53,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:53,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:08:53,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:53,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:08:53,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:08:53,494 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) [2022-01-18 01:08:53,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:53,609 INFO L93 Difference]: Finished difference Result 8118 states and 23069 transitions. [2022-01-18 01:08:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 01:08:53,610 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 [2022-01-18 01:08:53,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:53,625 INFO L225 Difference]: With dead ends: 8118 [2022-01-18 01:08:53,625 INFO L226 Difference]: Without dead ends: 7994 [2022-01-18 01:08:53,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-01-18 01:08:53,626 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 35 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:08:53,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1164 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:08:53,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7994 states. [2022-01-18 01:08:53,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7994 to 7994. [2022-01-18 01:08:53,732 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) [2022-01-18 01:08:53,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7994 states to 7994 states and 22795 transitions. [2022-01-18 01:08:53,752 INFO L78 Accepts]: Start accepts. Automaton has 7994 states and 22795 transitions. Word has length 141 [2022-01-18 01:08:53,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:53,753 INFO L470 AbstractCegarLoop]: Abstraction has 7994 states and 22795 transitions. [2022-01-18 01:08:53,753 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) [2022-01-18 01:08:53,753 INFO L276 IsEmpty]: Start isEmpty. Operand 7994 states and 22795 transitions. [2022-01-18 01:08:53,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:53,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:53,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:53,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 01:08:53,767 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:53,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:53,767 INFO L85 PathProgramCache]: Analyzing trace with hash 215087779, now seen corresponding path program 4 times [2022-01-18 01:08:53,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:53,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109096109] [2022-01-18 01:08:53,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:53,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:53,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:53,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:53,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109096109] [2022-01-18 01:08:53,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109096109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:53,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:53,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:08:53,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699533214] [2022-01-18 01:08:53,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:53,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:08:53,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:53,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:08:53,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:08:53,847 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) [2022-01-18 01:08:54,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:54,028 INFO L93 Difference]: Finished difference Result 8308 states and 23493 transitions. [2022-01-18 01:08:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 01:08:54,028 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 [2022-01-18 01:08:54,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:54,041 INFO L225 Difference]: With dead ends: 8308 [2022-01-18 01:08:54,041 INFO L226 Difference]: Without dead ends: 8146 [2022-01-18 01:08:54,041 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 [2022-01-18 01:08:54,042 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 113 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:08:54,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 1400 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:08:54,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8146 states. [2022-01-18 01:08:54,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8146 to 8010. [2022-01-18 01:08:54,135 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) [2022-01-18 01:08:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8010 states to 8010 states and 22823 transitions. [2022-01-18 01:08:54,150 INFO L78 Accepts]: Start accepts. Automaton has 8010 states and 22823 transitions. Word has length 141 [2022-01-18 01:08:54,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:54,150 INFO L470 AbstractCegarLoop]: Abstraction has 8010 states and 22823 transitions. [2022-01-18 01:08:54,150 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) [2022-01-18 01:08:54,150 INFO L276 IsEmpty]: Start isEmpty. Operand 8010 states and 22823 transitions. [2022-01-18 01:08:54,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:54,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:54,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:54,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 01:08:54,161 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:54,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:54,161 INFO L85 PathProgramCache]: Analyzing trace with hash -934606403, now seen corresponding path program 5 times [2022-01-18 01:08:54,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:54,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73817619] [2022-01-18 01:08:54,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:54,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:54,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:54,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73817619] [2022-01-18 01:08:54,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73817619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:54,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:54,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:08:54,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366191734] [2022-01-18 01:08:54,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:54,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:08:54,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:54,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:08:54,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:08:54,236 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) [2022-01-18 01:08:54,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:54,373 INFO L93 Difference]: Finished difference Result 8138 states and 23108 transitions. [2022-01-18 01:08:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 01:08:54,374 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 [2022-01-18 01:08:54,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:54,391 INFO L225 Difference]: With dead ends: 8138 [2022-01-18 01:08:54,391 INFO L226 Difference]: Without dead ends: 8037 [2022-01-18 01:08:54,392 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 [2022-01-18 01:08:54,392 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 [2022-01-18 01:08:54,392 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] [2022-01-18 01:08:54,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8037 states. [2022-01-18 01:08:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8037 to 8014. [2022-01-18 01:08:54,532 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) [2022-01-18 01:08:54,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8014 states to 8014 states and 22830 transitions. [2022-01-18 01:08:54,555 INFO L78 Accepts]: Start accepts. Automaton has 8014 states and 22830 transitions. Word has length 141 [2022-01-18 01:08:54,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:54,556 INFO L470 AbstractCegarLoop]: Abstraction has 8014 states and 22830 transitions. [2022-01-18 01:08:54,556 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) [2022-01-18 01:08:54,556 INFO L276 IsEmpty]: Start isEmpty. Operand 8014 states and 22830 transitions. [2022-01-18 01:08:54,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:54,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:54,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:54,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 01:08:54,570 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:54,571 INFO L85 PathProgramCache]: Analyzing trace with hash -737631029, now seen corresponding path program 6 times [2022-01-18 01:08:54,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:54,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388730715] [2022-01-18 01:08:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:54,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:54,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:54,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388730715] [2022-01-18 01:08:54,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388730715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:54,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:54,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:08:54,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713460364] [2022-01-18 01:08:54,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:54,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:08:54,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:54,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:08:54,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:08:54,663 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) [2022-01-18 01:08:54,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:54,780 INFO L93 Difference]: Finished difference Result 8112 states and 23041 transitions. [2022-01-18 01:08:54,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:08:54,781 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 [2022-01-18 01:08:54,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:54,793 INFO L225 Difference]: With dead ends: 8112 [2022-01-18 01:08:54,794 INFO L226 Difference]: Without dead ends: 7960 [2022-01-18 01:08:54,794 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 [2022-01-18 01:08:54,794 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 47 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1123 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 [2022-01-18 01:08:54,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1123 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:08:54,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7960 states. [2022-01-18 01:08:54,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7960 to 7960. [2022-01-18 01:08:54,899 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) [2022-01-18 01:08:54,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7960 states to 7960 states and 22698 transitions. [2022-01-18 01:08:54,916 INFO L78 Accepts]: Start accepts. Automaton has 7960 states and 22698 transitions. Word has length 141 [2022-01-18 01:08:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:54,916 INFO L470 AbstractCegarLoop]: Abstraction has 7960 states and 22698 transitions. [2022-01-18 01:08:54,916 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) [2022-01-18 01:08:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 7960 states and 22698 transitions. [2022-01-18 01:08:54,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 01:08:54,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:54,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:54,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-18 01:08:54,928 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:54,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:54,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1753409837, now seen corresponding path program 2 times [2022-01-18 01:08:54,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:54,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257851355] [2022-01-18 01:08:54,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:54,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:54,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:54,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257851355] [2022-01-18 01:08:54,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257851355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:54,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:08:54,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 01:08:54,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172351177] [2022-01-18 01:08:54,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:54,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 01:08:54,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:54,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 01:08:54,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-18 01:08:54,968 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) [2022-01-18 01:08:55,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:55,020 INFO L93 Difference]: Finished difference Result 7843 states and 22383 transitions. [2022-01-18 01:08:55,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 01:08:55,020 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 [2022-01-18 01:08:55,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:55,037 INFO L225 Difference]: With dead ends: 7843 [2022-01-18 01:08:55,037 INFO L226 Difference]: Without dead ends: 7745 [2022-01-18 01:08:55,038 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 [2022-01-18 01:08:55,038 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 12 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:08:55,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 616 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:08:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7745 states. [2022-01-18 01:08:55,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7745 to 7745. [2022-01-18 01:08:55,149 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) [2022-01-18 01:08:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 22128 transitions. [2022-01-18 01:08:55,165 INFO L78 Accepts]: Start accepts. Automaton has 7745 states and 22128 transitions. Word has length 141 [2022-01-18 01:08:55,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:55,166 INFO L470 AbstractCegarLoop]: Abstraction has 7745 states and 22128 transitions. [2022-01-18 01:08:55,166 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) [2022-01-18 01:08:55,166 INFO L276 IsEmpty]: Start isEmpty. Operand 7745 states and 22128 transitions. [2022-01-18 01:08:55,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-18 01:08:55,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:55,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:55,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-18 01:08:55,176 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:55,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:55,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1986433718, now seen corresponding path program 1 times [2022-01-18 01:08:55,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:55,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009411084] [2022-01-18 01:08:55,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:55,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:55,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:55,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009411084] [2022-01-18 01:08:55,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009411084] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:08:55,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964458937] [2022-01-18 01:08:55,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:55,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:08:55,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:08:55,339 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) [2022-01-18 01:08:55,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 01:08:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:55,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 01:08:55,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:08:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:56,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:08:56,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:56,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964458937] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 01:08:56,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 01:08:56,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2022-01-18 01:08:56,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729151036] [2022-01-18 01:08:56,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:56,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 01:08:56,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:56,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 01:08:56,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-01-18 01:08:56,718 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) [2022-01-18 01:08:57,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:57,182 INFO L93 Difference]: Finished difference Result 13005 states and 36572 transitions. [2022-01-18 01:08:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 01:08:57,183 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 [2022-01-18 01:08:57,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:57,207 INFO L225 Difference]: With dead ends: 13005 [2022-01-18 01:08:57,207 INFO L226 Difference]: Without dead ends: 12924 [2022-01-18 01:08:57,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=362, Invalid=1530, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 01:08:57,209 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 905 mSDsluCounter, 2239 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 2471 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 01:08:57,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 2471 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 01:08:57,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12924 states. [2022-01-18 01:08:57,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12924 to 9243. [2022-01-18 01:08:57,375 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) [2022-01-18 01:08:57,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9243 states to 9243 states and 26598 transitions. [2022-01-18 01:08:57,395 INFO L78 Accepts]: Start accepts. Automaton has 9243 states and 26598 transitions. Word has length 148 [2022-01-18 01:08:57,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:57,395 INFO L470 AbstractCegarLoop]: Abstraction has 9243 states and 26598 transitions. [2022-01-18 01:08:57,395 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) [2022-01-18 01:08:57,395 INFO L276 IsEmpty]: Start isEmpty. Operand 9243 states and 26598 transitions. [2022-01-18 01:08:57,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-18 01:08:57,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:57,408 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:57,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 01:08:57,608 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 [2022-01-18 01:08:57,609 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:57,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:57,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1487913134, now seen corresponding path program 2 times [2022-01-18 01:08:57,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:57,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991990232] [2022-01-18 01:08:57,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:57,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:08:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:08:57,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:08:57,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991990232] [2022-01-18 01:08:57,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991990232] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:08:57,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315813771] [2022-01-18 01:08:57,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:08:57,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:08:57,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:08:57,768 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) [2022-01-18 01:08:57,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 01:08:57,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-18 01:08:57,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:08:57,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 01:08:57,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:08:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:08:58,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 01:08:58,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315813771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:08:58,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 01:08:58,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [15] total 28 [2022-01-18 01:08:58,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671062802] [2022-01-18 01:08:58,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:08:58,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 01:08:58,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:08:58,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 01:08:58,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-01-18 01:08:58,640 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) [2022-01-18 01:08:59,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:08:59,504 INFO L93 Difference]: Finished difference Result 10514 states and 29630 transitions. [2022-01-18 01:08:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 01:08:59,504 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 [2022-01-18 01:08:59,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:08:59,521 INFO L225 Difference]: With dead ends: 10514 [2022-01-18 01:08:59,521 INFO L226 Difference]: Without dead ends: 10411 [2022-01-18 01:08:59,522 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 [2022-01-18 01:08:59,523 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 853 mSDsluCounter, 2596 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 2737 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:08:59,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [853 Valid, 2737 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:08:59,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10411 states. [2022-01-18 01:08:59,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10411 to 7793. [2022-01-18 01:08:59,630 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) [2022-01-18 01:08:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7793 states to 7793 states and 22198 transitions. [2022-01-18 01:08:59,646 INFO L78 Accepts]: Start accepts. Automaton has 7793 states and 22198 transitions. Word has length 148 [2022-01-18 01:08:59,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:08:59,646 INFO L470 AbstractCegarLoop]: Abstraction has 7793 states and 22198 transitions. [2022-01-18 01:08:59,646 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) [2022-01-18 01:08:59,647 INFO L276 IsEmpty]: Start isEmpty. Operand 7793 states and 22198 transitions. [2022-01-18 01:08:59,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-18 01:08:59,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:08:59,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:08:59,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 01:08:59,862 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 [2022-01-18 01:08:59,863 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:08:59,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:08:59,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2133376293, now seen corresponding path program 1 times [2022-01-18 01:08:59,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:08:59,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843925022] [2022-01-18 01:08:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:08:59,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:08:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:00,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:09:00,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:00,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843925022] [2022-01-18 01:09:00,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843925022] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:09:00,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698926504] [2022-01-18 01:09:00,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:00,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:09:00,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:09:00,051 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) [2022-01-18 01:09:00,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 01:09:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:00,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 01:09:00,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:09:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:09:00,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:09:01,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:09:01,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698926504] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 01:09:01,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 01:09:01,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15, 14] total 30 [2022-01-18 01:09:01,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338602857] [2022-01-18 01:09:01,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:01,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 01:09:01,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:01,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 01:09:01,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2022-01-18 01:09:01,187 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) [2022-01-18 01:09:01,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:01,603 INFO L93 Difference]: Finished difference Result 13053 states and 36642 transitions. [2022-01-18 01:09:01,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 01:09:01,604 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 [2022-01-18 01:09:01,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:01,629 INFO L225 Difference]: With dead ends: 13053 [2022-01-18 01:09:01,629 INFO L226 Difference]: Without dead ends: 12966 [2022-01-18 01:09:01,630 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 [2022-01-18 01:09:01,630 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1686 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1686 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:01,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1686 Valid, 2579 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 01:09:01,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12966 states. [2022-01-18 01:09:01,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12966 to 10881. [2022-01-18 01:09:01,786 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) [2022-01-18 01:09:01,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10881 states to 10881 states and 31432 transitions. [2022-01-18 01:09:01,807 INFO L78 Accepts]: Start accepts. Automaton has 10881 states and 31432 transitions. Word has length 148 [2022-01-18 01:09:01,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:01,807 INFO L470 AbstractCegarLoop]: Abstraction has 10881 states and 31432 transitions. [2022-01-18 01:09:01,807 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) [2022-01-18 01:09:01,807 INFO L276 IsEmpty]: Start isEmpty. Operand 10881 states and 31432 transitions. [2022-01-18 01:09:01,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-18 01:09:01,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:01,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:01,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 01:09:02,021 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 [2022-01-18 01:09:02,022 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:02,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:02,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1663070419, now seen corresponding path program 2 times [2022-01-18 01:09:02,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:02,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413890472] [2022-01-18 01:09:02,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:02,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:09:02,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:02,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413890472] [2022-01-18 01:09:02,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413890472] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:09:02,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038676635] [2022-01-18 01:09:02,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:09:02,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:09:02,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:09:02,191 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) [2022-01-18 01:09:02,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 01:09:02,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-18 01:09:02,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:09:02,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 01:09:02,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:09:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:09:02,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 01:09:02,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038676635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:02,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 01:09:02,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 27 [2022-01-18 01:09:02,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797261819] [2022-01-18 01:09:02,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:02,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 01:09:02,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:02,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 01:09:02,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-01-18 01:09:02,786 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) [2022-01-18 01:09:03,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:03,253 INFO L93 Difference]: Finished difference Result 11334 states and 32482 transitions. [2022-01-18 01:09:03,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 01:09:03,254 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 [2022-01-18 01:09:03,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:03,273 INFO L225 Difference]: With dead ends: 11334 [2022-01-18 01:09:03,273 INFO L226 Difference]: Without dead ends: 11231 [2022-01-18 01:09:03,273 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 [2022-01-18 01:09:03,274 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 430 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:03,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 1842 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:09:03,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11231 states. [2022-01-18 01:09:03,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11231 to 7794. [2022-01-18 01:09:03,387 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) [2022-01-18 01:09:03,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7794 states to 7794 states and 22192 transitions. [2022-01-18 01:09:03,401 INFO L78 Accepts]: Start accepts. Automaton has 7794 states and 22192 transitions. Word has length 148 [2022-01-18 01:09:03,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:03,402 INFO L470 AbstractCegarLoop]: Abstraction has 7794 states and 22192 transitions. [2022-01-18 01:09:03,402 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) [2022-01-18 01:09:03,402 INFO L276 IsEmpty]: Start isEmpty. Operand 7794 states and 22192 transitions. [2022-01-18 01:09:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-18 01:09:03,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:03,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:03,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 01:09:03,627 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 [2022-01-18 01:09:03,628 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:03,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:03,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2060043732, now seen corresponding path program 1 times [2022-01-18 01:09:03,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:03,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419411091] [2022-01-18 01:09:03,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:03,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:09:03,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:03,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419411091] [2022-01-18 01:09:03,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419411091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:03,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:03,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 01:09:03,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101034185] [2022-01-18 01:09:03,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:03,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 01:09:03,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:03,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 01:09:03,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 01:09:03,692 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) [2022-01-18 01:09:03,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:03,814 INFO L93 Difference]: Finished difference Result 9154 states and 25619 transitions. [2022-01-18 01:09:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 01:09:03,815 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 [2022-01-18 01:09:03,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:03,834 INFO L225 Difference]: With dead ends: 9154 [2022-01-18 01:09:03,835 INFO L226 Difference]: Without dead ends: 9032 [2022-01-18 01:09:03,835 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 [2022-01-18 01:09:03,835 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 194 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:03,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 1135 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:09:03,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9032 states. [2022-01-18 01:09:03,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9032 to 8431. [2022-01-18 01:09:03,971 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) [2022-01-18 01:09:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8431 states to 8431 states and 23815 transitions. [2022-01-18 01:09:03,993 INFO L78 Accepts]: Start accepts. Automaton has 8431 states and 23815 transitions. Word has length 154 [2022-01-18 01:09:03,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:03,994 INFO L470 AbstractCegarLoop]: Abstraction has 8431 states and 23815 transitions. [2022-01-18 01:09:03,994 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) [2022-01-18 01:09:03,994 INFO L276 IsEmpty]: Start isEmpty. Operand 8431 states and 23815 transitions. [2022-01-18 01:09:04,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-18 01:09:04,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:04,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:04,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-18 01:09:04,008 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:04,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:04,008 INFO L85 PathProgramCache]: Analyzing trace with hash -174767826, now seen corresponding path program 1 times [2022-01-18 01:09:04,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:04,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561489335] [2022-01-18 01:09:04,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:04,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:04,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:09:04,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:04,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561489335] [2022-01-18 01:09:04,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561489335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:04,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:04,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 01:09:04,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694397089] [2022-01-18 01:09:04,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:04,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 01:09:04,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:04,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 01:09:04,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 01:09:04,070 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) [2022-01-18 01:09:04,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:04,164 INFO L93 Difference]: Finished difference Result 7976 states and 22592 transitions. [2022-01-18 01:09:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 01:09:04,164 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 [2022-01-18 01:09:04,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:04,181 INFO L225 Difference]: With dead ends: 7976 [2022-01-18 01:09:04,181 INFO L226 Difference]: Without dead ends: 7766 [2022-01-18 01:09:04,181 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 [2022-01-18 01:09:04,182 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 146 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:04,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 798 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:09:04,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7766 states. [2022-01-18 01:09:04,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7766 to 7761. [2022-01-18 01:09:04,301 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) [2022-01-18 01:09:04,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7761 states to 7761 states and 22157 transitions. [2022-01-18 01:09:04,321 INFO L78 Accepts]: Start accepts. Automaton has 7761 states and 22157 transitions. Word has length 154 [2022-01-18 01:09:04,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:04,322 INFO L470 AbstractCegarLoop]: Abstraction has 7761 states and 22157 transitions. [2022-01-18 01:09:04,322 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) [2022-01-18 01:09:04,322 INFO L276 IsEmpty]: Start isEmpty. Operand 7761 states and 22157 transitions. [2022-01-18 01:09:04,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-18 01:09:04,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:04,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:04,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-18 01:09:04,335 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:04,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:04,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2131040572, now seen corresponding path program 1 times [2022-01-18 01:09:04,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:04,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603649077] [2022-01-18 01:09:04,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:04,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:09:04,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:04,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603649077] [2022-01-18 01:09:04,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603649077] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:09:04,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257542694] [2022-01-18 01:09:04,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:04,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:09:04,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:09:04,480 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) [2022-01-18 01:09:04,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 01:09:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:04,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 01:09:04,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:09:04,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:09:04,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:09:05,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:09:05,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257542694] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 01:09:05,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 01:09:05,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-01-18 01:09:05,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320652159] [2022-01-18 01:09:05,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:05,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 01:09:05,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:05,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 01:09:05,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-01-18 01:09:05,495 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) [2022-01-18 01:09:05,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:05,748 INFO L93 Difference]: Finished difference Result 9967 states and 27609 transitions. [2022-01-18 01:09:05,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 01:09:05,749 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 [2022-01-18 01:09:05,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:05,764 INFO L225 Difference]: With dead ends: 9967 [2022-01-18 01:09:05,764 INFO L226 Difference]: Without dead ends: 9967 [2022-01-18 01:09:05,765 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 [2022-01-18 01:09:05,765 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 822 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:05,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 982 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:09:05,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9967 states. [2022-01-18 01:09:05,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9967 to 7947. [2022-01-18 01:09:05,867 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) [2022-01-18 01:09:05,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7947 states to 7947 states and 22640 transitions. [2022-01-18 01:09:05,881 INFO L78 Accepts]: Start accepts. Automaton has 7947 states and 22640 transitions. Word has length 155 [2022-01-18 01:09:05,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:05,882 INFO L470 AbstractCegarLoop]: Abstraction has 7947 states and 22640 transitions. [2022-01-18 01:09:05,882 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) [2022-01-18 01:09:05,882 INFO L276 IsEmpty]: Start isEmpty. Operand 7947 states and 22640 transitions. [2022-01-18 01:09:05,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-18 01:09:05,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:05,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:05,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 01:09:06,093 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 [2022-01-18 01:09:06,094 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:06,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:06,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1234806942, now seen corresponding path program 1 times [2022-01-18 01:09:06,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:06,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730662085] [2022-01-18 01:09:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:06,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:09:06,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:06,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730662085] [2022-01-18 01:09:06,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730662085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:06,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:06,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 01:09:06,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320294823] [2022-01-18 01:09:06,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:06,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 01:09:06,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:06,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 01:09:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 01:09:06,160 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) [2022-01-18 01:09:06,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:06,266 INFO L93 Difference]: Finished difference Result 5780 states and 15833 transitions. [2022-01-18 01:09:06,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 01:09:06,267 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 [2022-01-18 01:09:06,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:06,274 INFO L225 Difference]: With dead ends: 5780 [2022-01-18 01:09:06,275 INFO L226 Difference]: Without dead ends: 5658 [2022-01-18 01:09:06,275 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 [2022-01-18 01:09:06,275 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 537 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:06,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [537 Valid, 852 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:09:06,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5658 states. [2022-01-18 01:09:06,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5658 to 5257. [2022-01-18 01:09:06,347 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) [2022-01-18 01:09:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 14595 transitions. [2022-01-18 01:09:06,359 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 14595 transitions. Word has length 161 [2022-01-18 01:09:06,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:06,359 INFO L470 AbstractCegarLoop]: Abstraction has 5257 states and 14595 transitions. [2022-01-18 01:09:06,360 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) [2022-01-18 01:09:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 14595 transitions. [2022-01-18 01:09:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-18 01:09:06,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:06,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:06,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-18 01:09:06,368 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:06,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:06,368 INFO L85 PathProgramCache]: Analyzing trace with hash 825348796, now seen corresponding path program 1 times [2022-01-18 01:09:06,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:06,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46736871] [2022-01-18 01:09:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:06,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:09:06,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:06,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46736871] [2022-01-18 01:09:06,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46736871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:06,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:06,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 01:09:06,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838296221] [2022-01-18 01:09:06,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:06,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 01:09:06,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:06,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 01:09:06,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 01:09:06,429 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) [2022-01-18 01:09:06,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:06,509 INFO L93 Difference]: Finished difference Result 4602 states and 12806 transitions. [2022-01-18 01:09:06,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 01:09:06,509 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 [2022-01-18 01:09:06,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:06,517 INFO L225 Difference]: With dead ends: 4602 [2022-01-18 01:09:06,517 INFO L226 Difference]: Without dead ends: 4425 [2022-01-18 01:09:06,518 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 [2022-01-18 01:09:06,518 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 404 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:06,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 642 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:09:06,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4425 states. [2022-01-18 01:09:06,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4425 to 4420. [2022-01-18 01:09:06,576 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) [2022-01-18 01:09:06,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4420 states to 4420 states and 12405 transitions. [2022-01-18 01:09:06,587 INFO L78 Accepts]: Start accepts. Automaton has 4420 states and 12405 transitions. Word has length 161 [2022-01-18 01:09:06,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:06,588 INFO L470 AbstractCegarLoop]: Abstraction has 4420 states and 12405 transitions. [2022-01-18 01:09:06,588 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) [2022-01-18 01:09:06,588 INFO L276 IsEmpty]: Start isEmpty. Operand 4420 states and 12405 transitions. [2022-01-18 01:09:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-18 01:09:06,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:06,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:06,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-18 01:09:06,595 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:06,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:06,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2054720919, now seen corresponding path program 1 times [2022-01-18 01:09:06,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:06,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162383982] [2022-01-18 01:09:06,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:06,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:06,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:09:06,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:06,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162383982] [2022-01-18 01:09:06,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162383982] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:09:06,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082302291] [2022-01-18 01:09:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:06,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:09:06,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:09:06,738 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) [2022-01-18 01:09:06,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 01:09:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:06,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 01:09:06,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:09:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:09:07,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:09:07,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:09:07,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082302291] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 01:09:07,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 01:09:07,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-01-18 01:09:07,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507517647] [2022-01-18 01:09:07,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:07,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 01:09:07,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:07,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 01:09:07,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-01-18 01:09:07,612 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) [2022-01-18 01:09:07,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:07,819 INFO L93 Difference]: Finished difference Result 5196 states and 14341 transitions. [2022-01-18 01:09:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 01:09:07,820 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 [2022-01-18 01:09:07,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:07,826 INFO L225 Difference]: With dead ends: 5196 [2022-01-18 01:09:07,826 INFO L226 Difference]: Without dead ends: 5196 [2022-01-18 01:09:07,827 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 [2022-01-18 01:09:07,827 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, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:07,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 658 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:09:07,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2022-01-18 01:09:07,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 4550. [2022-01-18 01:09:07,872 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) [2022-01-18 01:09:07,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4550 states to 4550 states and 12770 transitions. [2022-01-18 01:09:07,879 INFO L78 Accepts]: Start accepts. Automaton has 4550 states and 12770 transitions. Word has length 164 [2022-01-18 01:09:07,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:07,879 INFO L470 AbstractCegarLoop]: Abstraction has 4550 states and 12770 transitions. [2022-01-18 01:09:07,880 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) [2022-01-18 01:09:07,880 INFO L276 IsEmpty]: Start isEmpty. Operand 4550 states and 12770 transitions. [2022-01-18 01:09:07,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-01-18 01:09:07,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:07,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:07,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 01:09:08,086 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 [2022-01-18 01:09:08,086 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:08,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:08,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1659523190, now seen corresponding path program 1 times [2022-01-18 01:09:08,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:08,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526900315] [2022-01-18 01:09:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:08,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:09:08,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:08,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526900315] [2022-01-18 01:09:08,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526900315] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:09:08,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961815989] [2022-01-18 01:09:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:08,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:09:08,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:09:08,440 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) [2022-01-18 01:09:08,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 01:09:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:08,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 01:09:08,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:09:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:09,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:09:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:10,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961815989] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:09:10,710 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:09:10,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 20] total 46 [2022-01-18 01:09:10,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531514593] [2022-01-18 01:09:10,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:09:10,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 01:09:10,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:10,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 01:09:10,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1784, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 01:09:10,712 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) [2022-01-18 01:09:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:12,372 INFO L93 Difference]: Finished difference Result 18134 states and 50616 transitions. [2022-01-18 01:09:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 01:09:12,372 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 [2022-01-18 01:09:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:12,411 INFO L225 Difference]: With dead ends: 18134 [2022-01-18 01:09:12,412 INFO L226 Difference]: Without dead ends: 17924 [2022-01-18 01:09:12,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 318 SyntacticMatches, 5 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1326 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1157, Invalid=4849, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 01:09:12,414 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 3383 mSDsluCounter, 6489 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3383 SdHoareTripleChecker+Valid, 6599 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:12,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3383 Valid, 6599 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 01:09:12,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17924 states. [2022-01-18 01:09:12,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17924 to 8265. [2022-01-18 01:09:12,559 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) [2022-01-18 01:09:12,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8265 states to 8265 states and 23517 transitions. [2022-01-18 01:09:12,573 INFO L78 Accepts]: Start accepts. Automaton has 8265 states and 23517 transitions. Word has length 173 [2022-01-18 01:09:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:12,574 INFO L470 AbstractCegarLoop]: Abstraction has 8265 states and 23517 transitions. [2022-01-18 01:09:12,574 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) [2022-01-18 01:09:12,574 INFO L276 IsEmpty]: Start isEmpty. Operand 8265 states and 23517 transitions. [2022-01-18 01:09:12,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:12,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:12,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:12,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-18 01:09:12,785 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 [2022-01-18 01:09:12,785 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:12,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:12,785 INFO L85 PathProgramCache]: Analyzing trace with hash -130323262, now seen corresponding path program 1 times [2022-01-18 01:09:12,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:12,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278794366] [2022-01-18 01:09:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:12,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:13,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:13,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278794366] [2022-01-18 01:09:13,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278794366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:13,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:13,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:09:13,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040581858] [2022-01-18 01:09:13,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:13,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:09:13,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:13,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:09:13,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:09:13,155 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) [2022-01-18 01:09:13,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:13,920 INFO L93 Difference]: Finished difference Result 20121 states and 57525 transitions. [2022-01-18 01:09:13,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:09:13,920 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 [2022-01-18 01:09:13,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:13,954 INFO L225 Difference]: With dead ends: 20121 [2022-01-18 01:09:13,955 INFO L226 Difference]: Without dead ends: 20121 [2022-01-18 01:09:13,955 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 [2022-01-18 01:09:13,956 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 1190 mSDsluCounter, 3373 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 3680 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:13,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1190 Valid, 3680 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:09:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20121 states. [2022-01-18 01:09:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20121 to 8909. [2022-01-18 01:09:14,118 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) [2022-01-18 01:09:14,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8909 states to 8909 states and 25327 transitions. [2022-01-18 01:09:14,134 INFO L78 Accepts]: Start accepts. Automaton has 8909 states and 25327 transitions. Word has length 177 [2022-01-18 01:09:14,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:14,135 INFO L470 AbstractCegarLoop]: Abstraction has 8909 states and 25327 transitions. [2022-01-18 01:09:14,135 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) [2022-01-18 01:09:14,135 INFO L276 IsEmpty]: Start isEmpty. Operand 8909 states and 25327 transitions. [2022-01-18 01:09:14,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:14,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:14,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:14,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-18 01:09:14,146 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:14,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:14,146 INFO L85 PathProgramCache]: Analyzing trace with hash 778847230, now seen corresponding path program 1 times [2022-01-18 01:09:14,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:14,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984229609] [2022-01-18 01:09:14,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:14,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:14,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:14,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984229609] [2022-01-18 01:09:14,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984229609] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:09:14,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533205499] [2022-01-18 01:09:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:14,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:09:14,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:09:14,550 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) [2022-01-18 01:09:14,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 01:09:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:14,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 01:09:14,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:09:15,164 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:09:15,164 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 [2022-01-18 01:09:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:15,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:09:15,443 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-01-18 01:09:15,443 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 [2022-01-18 01:09:15,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:15,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533205499] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:09:15,606 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:09:15,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 31 [2022-01-18 01:09:15,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728940468] [2022-01-18 01:09:15,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:09:15,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 01:09:15,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:15,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 01:09:15,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2022-01-18 01:09:15,610 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) [2022-01-18 01:09:17,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:17,130 INFO L93 Difference]: Finished difference Result 28585 states and 81933 transitions. [2022-01-18 01:09:17,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 01:09:17,130 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 [2022-01-18 01:09:17,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:17,189 INFO L225 Difference]: With dead ends: 28585 [2022-01-18 01:09:17,189 INFO L226 Difference]: Without dead ends: 28585 [2022-01-18 01:09:17,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=944, Invalid=3612, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 01:09:17,191 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 1829 mSDsluCounter, 6350 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 6764 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 389 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:17,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 6764 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1359 Invalid, 0 Unknown, 389 Unchecked, 0.6s Time] [2022-01-18 01:09:17,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28585 states. [2022-01-18 01:09:17,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28585 to 11625. [2022-01-18 01:09:17,442 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) [2022-01-18 01:09:17,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11625 states to 11625 states and 33339 transitions. [2022-01-18 01:09:17,586 INFO L78 Accepts]: Start accepts. Automaton has 11625 states and 33339 transitions. Word has length 177 [2022-01-18 01:09:17,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:17,587 INFO L470 AbstractCegarLoop]: Abstraction has 11625 states and 33339 transitions. [2022-01-18 01:09:17,587 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) [2022-01-18 01:09:17,587 INFO L276 IsEmpty]: Start isEmpty. Operand 11625 states and 33339 transitions. [2022-01-18 01:09:17,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:17,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:17,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:17,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-18 01:09:17,802 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 [2022-01-18 01:09:17,802 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:17,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:17,804 INFO L85 PathProgramCache]: Analyzing trace with hash 466177484, now seen corresponding path program 2 times [2022-01-18 01:09:17,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:17,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764866630] [2022-01-18 01:09:17,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:17,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:18,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:18,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764866630] [2022-01-18 01:09:18,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764866630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:18,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:18,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:09:18,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44669513] [2022-01-18 01:09:18,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:18,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:09:18,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:18,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:09:18,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:09:18,190 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) [2022-01-18 01:09:18,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:18,766 INFO L93 Difference]: Finished difference Result 23073 states and 66171 transitions. [2022-01-18 01:09:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 01:09:18,767 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 [2022-01-18 01:09:18,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:18,808 INFO L225 Difference]: With dead ends: 23073 [2022-01-18 01:09:18,808 INFO L226 Difference]: Without dead ends: 23073 [2022-01-18 01:09:18,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=312, Invalid=1020, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:09:18,809 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 852 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 2999 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:18,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 2999 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:09:18,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23073 states. [2022-01-18 01:09:18,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23073 to 11799. [2022-01-18 01:09:19,012 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) [2022-01-18 01:09:19,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11799 states to 11799 states and 33845 transitions. [2022-01-18 01:09:19,035 INFO L78 Accepts]: Start accepts. Automaton has 11799 states and 33845 transitions. Word has length 177 [2022-01-18 01:09:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:19,035 INFO L470 AbstractCegarLoop]: Abstraction has 11799 states and 33845 transitions. [2022-01-18 01:09:19,035 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) [2022-01-18 01:09:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 11799 states and 33845 transitions. [2022-01-18 01:09:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:19,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:19,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:19,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-18 01:09:19,051 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:19,051 INFO L85 PathProgramCache]: Analyzing trace with hash -586655790, now seen corresponding path program 2 times [2022-01-18 01:09:19,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:19,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603053719] [2022-01-18 01:09:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:19,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:19,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:19,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:19,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603053719] [2022-01-18 01:09:19,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603053719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:19,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:19,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:09:19,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661342544] [2022-01-18 01:09:19,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:19,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:09:19,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:19,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:09:19,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:09:19,492 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) [2022-01-18 01:09:20,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:20,097 INFO L93 Difference]: Finished difference Result 23171 states and 66451 transitions. [2022-01-18 01:09:20,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 01:09:20,097 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 [2022-01-18 01:09:20,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:20,136 INFO L225 Difference]: With dead ends: 23171 [2022-01-18 01:09:20,137 INFO L226 Difference]: Without dead ends: 23171 [2022-01-18 01:09:20,137 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 [2022-01-18 01:09:20,137 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1122 mSDsluCounter, 3309 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 3587 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:20,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1122 Valid, 3587 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:09:20,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23171 states. [2022-01-18 01:09:20,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23171 to 12037. [2022-01-18 01:09:20,337 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) [2022-01-18 01:09:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-01-18 01:09:20,361 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-01-18 01:09:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:20,361 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-01-18 01:09:20,361 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) [2022-01-18 01:09:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-01-18 01:09:20,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:20,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:20,377 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] [2022-01-18 01:09:20,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-18 01:09:20,377 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:20,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:20,377 INFO L85 PathProgramCache]: Analyzing trace with hash -859187188, now seen corresponding path program 3 times [2022-01-18 01:09:20,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:20,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440367450] [2022-01-18 01:09:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:20,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:20,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:20,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:20,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440367450] [2022-01-18 01:09:20,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440367450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:20,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:20,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:09:20,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171141256] [2022-01-18 01:09:20,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:20,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:09:20,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:20,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:09:20,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:09:20,801 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) [2022-01-18 01:09:21,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:21,455 INFO L93 Difference]: Finished difference Result 23085 states and 66203 transitions. [2022-01-18 01:09:21,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:09:21,455 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 [2022-01-18 01:09:21,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:21,497 INFO L225 Difference]: With dead ends: 23085 [2022-01-18 01:09:21,497 INFO L226 Difference]: Without dead ends: 23085 [2022-01-18 01:09:21,498 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 [2022-01-18 01:09:21,498 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1207 mSDsluCounter, 3272 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:21,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 3554 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:09:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23085 states. [2022-01-18 01:09:21,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23085 to 12037. [2022-01-18 01:09:21,709 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) [2022-01-18 01:09:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-01-18 01:09:21,733 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-01-18 01:09:21,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:21,733 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-01-18 01:09:21,733 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) [2022-01-18 01:09:21,733 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-01-18 01:09:21,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:21,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:21,749 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] [2022-01-18 01:09:21,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-18 01:09:21,749 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:21,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:21,749 INFO L85 PathProgramCache]: Analyzing trace with hash -395612446, now seen corresponding path program 1 times [2022-01-18 01:09:21,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:21,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990103272] [2022-01-18 01:09:21,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:21,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:22,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:22,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990103272] [2022-01-18 01:09:22,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990103272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:22,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:22,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:09:22,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703397329] [2022-01-18 01:09:22,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:22,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:09:22,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:22,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:09:22,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:09:22,166 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) [2022-01-18 01:09:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:22,707 INFO L93 Difference]: Finished difference Result 23197 states and 66527 transitions. [2022-01-18 01:09:22,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:09:22,707 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 [2022-01-18 01:09:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:22,748 INFO L225 Difference]: With dead ends: 23197 [2022-01-18 01:09:22,748 INFO L226 Difference]: Without dead ends: 23197 [2022-01-18 01:09:22,749 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 [2022-01-18 01:09:22,749 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 883 mSDsluCounter, 2552 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:22,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 2872 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:09:22,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23197 states. [2022-01-18 01:09:22,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23197 to 12037. [2022-01-18 01:09:22,954 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) [2022-01-18 01:09:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-01-18 01:09:22,977 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-01-18 01:09:22,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:22,978 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-01-18 01:09:22,978 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) [2022-01-18 01:09:22,978 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-01-18 01:09:22,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:22,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:22,993 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] [2022-01-18 01:09:22,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-18 01:09:22,993 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:22,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:22,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1801101254, now seen corresponding path program 4 times [2022-01-18 01:09:22,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:22,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493351481] [2022-01-18 01:09:22,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:22,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:23,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:23,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:23,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493351481] [2022-01-18 01:09:23,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493351481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:23,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:23,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:09:23,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925354690] [2022-01-18 01:09:23,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:23,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:09:23,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:23,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:09:23,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:09:23,477 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) [2022-01-18 01:09:24,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:24,183 INFO L93 Difference]: Finished difference Result 23477 states and 67305 transitions. [2022-01-18 01:09:24,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:09:24,183 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 [2022-01-18 01:09:24,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:24,231 INFO L225 Difference]: With dead ends: 23477 [2022-01-18 01:09:24,231 INFO L226 Difference]: Without dead ends: 23477 [2022-01-18 01:09:24,232 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 [2022-01-18 01:09:24,232 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 890 mSDsluCounter, 3369 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 3667 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:24,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 3667 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:09:24,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23477 states. [2022-01-18 01:09:24,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23477 to 12021. [2022-01-18 01:09:24,478 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) [2022-01-18 01:09:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12021 states to 12021 states and 34475 transitions. [2022-01-18 01:09:24,503 INFO L78 Accepts]: Start accepts. Automaton has 12021 states and 34475 transitions. Word has length 177 [2022-01-18 01:09:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:24,503 INFO L470 AbstractCegarLoop]: Abstraction has 12021 states and 34475 transitions. [2022-01-18 01:09:24,503 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) [2022-01-18 01:09:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 12021 states and 34475 transitions. [2022-01-18 01:09:24,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:24,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:24,519 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] [2022-01-18 01:09:24,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-18 01:09:24,520 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:24,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:24,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2095983646, now seen corresponding path program 2 times [2022-01-18 01:09:24,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:24,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807460100] [2022-01-18 01:09:24,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:24,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:24,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:24,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807460100] [2022-01-18 01:09:24,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807460100] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:24,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:24,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:09:24,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239024143] [2022-01-18 01:09:24,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:24,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:09:24,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:24,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:09:24,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:09:24,901 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) [2022-01-18 01:09:25,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:25,527 INFO L93 Difference]: Finished difference Result 23261 states and 66703 transitions. [2022-01-18 01:09:25,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:09:25,527 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 [2022-01-18 01:09:25,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:25,572 INFO L225 Difference]: With dead ends: 23261 [2022-01-18 01:09:25,572 INFO L226 Difference]: Without dead ends: 23261 [2022-01-18 01:09:25,573 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 [2022-01-18 01:09:25,573 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1239 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 2800 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:25,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1239 Valid, 2800 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:09:25,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23261 states. [2022-01-18 01:09:25,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23261 to 12037. [2022-01-18 01:09:25,816 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) [2022-01-18 01:09:25,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12037 states to 12037 states and 34519 transitions. [2022-01-18 01:09:25,841 INFO L78 Accepts]: Start accepts. Automaton has 12037 states and 34519 transitions. Word has length 177 [2022-01-18 01:09:25,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:25,841 INFO L470 AbstractCegarLoop]: Abstraction has 12037 states and 34519 transitions. [2022-01-18 01:09:25,841 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) [2022-01-18 01:09:25,841 INFO L276 IsEmpty]: Start isEmpty. Operand 12037 states and 34519 transitions. [2022-01-18 01:09:25,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:25,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:25,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:25,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-18 01:09:25,857 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:25,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:25,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1620224, now seen corresponding path program 3 times [2022-01-18 01:09:25,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:25,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335103999] [2022-01-18 01:09:25,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:25,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:26,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:26,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:26,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335103999] [2022-01-18 01:09:26,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335103999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:26,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:26,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:09:26,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591836548] [2022-01-18 01:09:26,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:26,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:09:26,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:26,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:09:26,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:09:26,295 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) [2022-01-18 01:09:27,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:27,016 INFO L93 Difference]: Finished difference Result 24125 states and 69175 transitions. [2022-01-18 01:09:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:09:27,016 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 [2022-01-18 01:09:27,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:27,061 INFO L225 Difference]: With dead ends: 24125 [2022-01-18 01:09:27,061 INFO L226 Difference]: Without dead ends: 24125 [2022-01-18 01:09:27,062 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 [2022-01-18 01:09:27,062 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 903 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:27,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 2867 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:09:27,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24125 states. [2022-01-18 01:09:27,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24125 to 12005. [2022-01-18 01:09:27,274 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) [2022-01-18 01:09:27,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12005 states to 12005 states and 34431 transitions. [2022-01-18 01:09:27,298 INFO L78 Accepts]: Start accepts. Automaton has 12005 states and 34431 transitions. Word has length 177 [2022-01-18 01:09:27,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:27,298 INFO L470 AbstractCegarLoop]: Abstraction has 12005 states and 34431 transitions. [2022-01-18 01:09:27,298 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) [2022-01-18 01:09:27,298 INFO L276 IsEmpty]: Start isEmpty. Operand 12005 states and 34431 transitions. [2022-01-18 01:09:27,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:27,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:27,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:27,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-18 01:09:27,314 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:27,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:27,315 INFO L85 PathProgramCache]: Analyzing trace with hash -464494442, now seen corresponding path program 3 times [2022-01-18 01:09:27,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:27,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161509711] [2022-01-18 01:09:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:27,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:27,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:27,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161509711] [2022-01-18 01:09:27,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161509711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:27,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:27,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:09:27,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798647598] [2022-01-18 01:09:27,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:27,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:09:27,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:27,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:09:27,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:09:27,745 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) [2022-01-18 01:09:28,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:28,390 INFO L93 Difference]: Finished difference Result 23945 states and 68795 transitions. [2022-01-18 01:09:28,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:09:28,390 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 [2022-01-18 01:09:28,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:28,433 INFO L225 Difference]: With dead ends: 23945 [2022-01-18 01:09:28,433 INFO L226 Difference]: Without dead ends: 23945 [2022-01-18 01:09:28,434 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 [2022-01-18 01:09:28,434 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 902 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 3145 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:28,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 3145 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:09:28,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23945 states. [2022-01-18 01:09:28,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23945 to 12163. [2022-01-18 01:09:28,650 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) [2022-01-18 01:09:28,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12163 states to 12163 states and 34877 transitions. [2022-01-18 01:09:28,674 INFO L78 Accepts]: Start accepts. Automaton has 12163 states and 34877 transitions. Word has length 177 [2022-01-18 01:09:28,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:28,674 INFO L470 AbstractCegarLoop]: Abstraction has 12163 states and 34877 transitions. [2022-01-18 01:09:28,674 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) [2022-01-18 01:09:28,675 INFO L276 IsEmpty]: Start isEmpty. Operand 12163 states and 34877 transitions. [2022-01-18 01:09:28,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:28,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:28,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:28,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-18 01:09:28,692 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:28,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:28,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1731127998, now seen corresponding path program 5 times [2022-01-18 01:09:28,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:28,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270993892] [2022-01-18 01:09:28,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:28,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:29,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:29,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270993892] [2022-01-18 01:09:29,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270993892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:29,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:29,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:09:29,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145768494] [2022-01-18 01:09:29,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:29,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:09:29,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:29,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:09:29,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:09:29,154 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) [2022-01-18 01:09:29,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:29,830 INFO L93 Difference]: Finished difference Result 23735 states and 68113 transitions. [2022-01-18 01:09:29,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:09:29,831 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 [2022-01-18 01:09:29,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:29,873 INFO L225 Difference]: With dead ends: 23735 [2022-01-18 01:09:29,873 INFO L226 Difference]: Without dead ends: 23735 [2022-01-18 01:09:29,874 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 [2022-01-18 01:09:29,874 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 880 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:29,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [880 Valid, 3417 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:09:29,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23735 states. [2022-01-18 01:09:30,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23735 to 12195. [2022-01-18 01:09:30,082 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) [2022-01-18 01:09:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12195 states to 12195 states and 34965 transitions. [2022-01-18 01:09:30,105 INFO L78 Accepts]: Start accepts. Automaton has 12195 states and 34965 transitions. Word has length 177 [2022-01-18 01:09:30,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:30,106 INFO L470 AbstractCegarLoop]: Abstraction has 12195 states and 34965 transitions. [2022-01-18 01:09:30,106 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) [2022-01-18 01:09:30,106 INFO L276 IsEmpty]: Start isEmpty. Operand 12195 states and 34965 transitions. [2022-01-18 01:09:30,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:30,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:30,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:30,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-18 01:09:30,122 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:30,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2137801898, now seen corresponding path program 6 times [2022-01-18 01:09:30,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:30,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153835216] [2022-01-18 01:09:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:30,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:30,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:30,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153835216] [2022-01-18 01:09:30,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153835216] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:09:30,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82578613] [2022-01-18 01:09:30,587 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:09:30,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:09:30,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:09:30,588 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) [2022-01-18 01:09:30,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 01:09:30,710 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 01:09:30,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:09:30,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 01:09:30,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:09:31,290 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:09:31,290 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 26 treesize of output 18 [2022-01-18 01:09:31,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:31,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:09:31,543 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-01-18 01:09:31,543 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 [2022-01-18 01:09:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:31,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82578613] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:09:31,765 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:09:31,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 31 [2022-01-18 01:09:31,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887382597] [2022-01-18 01:09:31,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:09:31,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 01:09:31,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:31,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 01:09:31,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2022-01-18 01:09:31,767 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) [2022-01-18 01:09:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:33,962 INFO L93 Difference]: Finished difference Result 36692 states and 105868 transitions. [2022-01-18 01:09:33,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 01:09:33,962 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 [2022-01-18 01:09:33,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:34,040 INFO L225 Difference]: With dead ends: 36692 [2022-01-18 01:09:34,041 INFO L226 Difference]: Without dead ends: 36692 [2022-01-18 01:09:34,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1336 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1236, Invalid=5084, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 01:09:34,043 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1847 mSDsluCounter, 7378 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 7752 SdHoareTripleChecker+Invalid, 2882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 539 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:34,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1847 Valid, 7752 Invalid, 2882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2320 Invalid, 0 Unknown, 539 Unchecked, 0.9s Time] [2022-01-18 01:09:34,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36692 states. [2022-01-18 01:09:34,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36692 to 14495. [2022-01-18 01:09:34,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14495 states, 14494 states have (on average 2.8825031047329928) internal successors, (41779), 14494 states have internal predecessors, (41779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:34,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14495 states to 14495 states and 41779 transitions. [2022-01-18 01:09:34,416 INFO L78 Accepts]: Start accepts. Automaton has 14495 states and 41779 transitions. Word has length 177 [2022-01-18 01:09:34,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:34,417 INFO L470 AbstractCegarLoop]: Abstraction has 14495 states and 41779 transitions. [2022-01-18 01:09:34,417 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) [2022-01-18 01:09:34,417 INFO L276 IsEmpty]: Start isEmpty. Operand 14495 states and 41779 transitions. [2022-01-18 01:09:34,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:34,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:34,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:34,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-18 01:09:34,638 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 [2022-01-18 01:09:34,638 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:34,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:34,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1374048124, now seen corresponding path program 4 times [2022-01-18 01:09:34,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:34,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457932937] [2022-01-18 01:09:34,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:34,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:35,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:35,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457932937] [2022-01-18 01:09:35,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457932937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:35,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:35,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:09:35,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468942807] [2022-01-18 01:09:35,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:35,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:09:35,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:35,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:09:35,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:09:35,048 INFO L87 Difference]: Start difference. First operand 14495 states and 41779 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) [2022-01-18 01:09:35,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:35,688 INFO L93 Difference]: Finished difference Result 26605 states and 76531 transitions. [2022-01-18 01:09:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:09:35,688 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 [2022-01-18 01:09:35,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:35,739 INFO L225 Difference]: With dead ends: 26605 [2022-01-18 01:09:35,739 INFO L226 Difference]: Without dead ends: 26605 [2022-01-18 01:09:35,740 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 [2022-01-18 01:09:35,740 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 976 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:35,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 3329 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:09:35,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26605 states. [2022-01-18 01:09:35,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26605 to 14511. [2022-01-18 01:09:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14511 states, 14510 states have (on average 2.883459682977257) internal successors, (41839), 14510 states have internal predecessors, (41839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14511 states to 14511 states and 41839 transitions. [2022-01-18 01:09:36,020 INFO L78 Accepts]: Start accepts. Automaton has 14511 states and 41839 transitions. Word has length 177 [2022-01-18 01:09:36,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:36,020 INFO L470 AbstractCegarLoop]: Abstraction has 14511 states and 41839 transitions. [2022-01-18 01:09:36,020 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) [2022-01-18 01:09:36,020 INFO L276 IsEmpty]: Start isEmpty. Operand 14511 states and 41839 transitions. [2022-01-18 01:09:36,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:36,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:36,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:36,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-18 01:09:36,040 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:36,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash -152865438, now seen corresponding path program 1 times [2022-01-18 01:09:36,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:36,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399716863] [2022-01-18 01:09:36,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:36,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:36,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:36,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399716863] [2022-01-18 01:09:36,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399716863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:36,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:36,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:09:36,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855193450] [2022-01-18 01:09:36,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:36,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:09:36,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:36,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:09:36,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:09:36,454 INFO L87 Difference]: Start difference. First operand 14511 states and 41839 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) [2022-01-18 01:09:37,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:37,052 INFO L93 Difference]: Finished difference Result 26339 states and 75787 transitions. [2022-01-18 01:09:37,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:09:37,053 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 [2022-01-18 01:09:37,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:37,104 INFO L225 Difference]: With dead ends: 26339 [2022-01-18 01:09:37,105 INFO L226 Difference]: Without dead ends: 26339 [2022-01-18 01:09:37,105 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 [2022-01-18 01:09:37,106 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 976 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2985 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:37,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 2985 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:09:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26339 states. [2022-01-18 01:09:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26339 to 14519. [2022-01-18 01:09:37,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14519 states, 14518 states have (on average 2.8833861413417825) internal successors, (41861), 14518 states have internal predecessors, (41861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:37,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14519 states to 14519 states and 41861 transitions. [2022-01-18 01:09:37,388 INFO L78 Accepts]: Start accepts. Automaton has 14519 states and 41861 transitions. Word has length 177 [2022-01-18 01:09:37,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:37,388 INFO L470 AbstractCegarLoop]: Abstraction has 14519 states and 41861 transitions. [2022-01-18 01:09:37,388 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) [2022-01-18 01:09:37,388 INFO L276 IsEmpty]: Start isEmpty. Operand 14519 states and 41861 transitions. [2022-01-18 01:09:37,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:37,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:37,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:37,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-18 01:09:37,409 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:37,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:37,409 INFO L85 PathProgramCache]: Analyzing trace with hash 48683452, now seen corresponding path program 7 times [2022-01-18 01:09:37,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:37,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006703782] [2022-01-18 01:09:37,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:37,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:37,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:37,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:37,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006703782] [2022-01-18 01:09:37,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006703782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:37,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:37,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:09:37,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151250200] [2022-01-18 01:09:37,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:37,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:09:37,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:37,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:09:37,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:09:37,795 INFO L87 Difference]: Start difference. First operand 14519 states and 41861 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) [2022-01-18 01:09:38,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:38,427 INFO L93 Difference]: Finished difference Result 25991 states and 74799 transitions. [2022-01-18 01:09:38,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:09:38,428 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 [2022-01-18 01:09:38,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:38,477 INFO L225 Difference]: With dead ends: 25991 [2022-01-18 01:09:38,477 INFO L226 Difference]: Without dead ends: 25991 [2022-01-18 01:09:38,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=333, Invalid=1073, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:09:38,478 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1039 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:38,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 3435 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:09:38,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25991 states. [2022-01-18 01:09:38,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25991 to 14511. [2022-01-18 01:09:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14511 states, 14510 states have (on average 2.883459682977257) internal successors, (41839), 14510 states have internal predecessors, (41839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14511 states to 14511 states and 41839 transitions. [2022-01-18 01:09:38,749 INFO L78 Accepts]: Start accepts. Automaton has 14511 states and 41839 transitions. Word has length 177 [2022-01-18 01:09:38,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:38,749 INFO L470 AbstractCegarLoop]: Abstraction has 14511 states and 41839 transitions. [2022-01-18 01:09:38,749 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) [2022-01-18 01:09:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 14511 states and 41839 transitions. [2022-01-18 01:09:38,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:38,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:38,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:38,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-18 01:09:38,769 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:38,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:38,769 INFO L85 PathProgramCache]: Analyzing trace with hash 512258194, now seen corresponding path program 4 times [2022-01-18 01:09:38,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:38,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150800940] [2022-01-18 01:09:38,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:38,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:39,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:39,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150800940] [2022-01-18 01:09:39,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150800940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:39,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:39,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:09:39,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066394456] [2022-01-18 01:09:39,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:39,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:09:39,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:39,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:09:39,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:09:39,190 INFO L87 Difference]: Start difference. First operand 14511 states and 41839 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) [2022-01-18 01:09:39,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:39,931 INFO L93 Difference]: Finished difference Result 26103 states and 75123 transitions. [2022-01-18 01:09:39,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:09:39,931 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 [2022-01-18 01:09:39,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:40,070 INFO L225 Difference]: With dead ends: 26103 [2022-01-18 01:09:40,071 INFO L226 Difference]: Without dead ends: 26103 [2022-01-18 01:09:40,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:09:40,071 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1032 mSDsluCounter, 2841 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:40,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 3119 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:09:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26103 states. [2022-01-18 01:09:40,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26103 to 14495. [2022-01-18 01:09:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14495 states, 14494 states have (on average 2.8825031047329928) internal successors, (41779), 14494 states have internal predecessors, (41779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14495 states to 14495 states and 41779 transitions. [2022-01-18 01:09:40,324 INFO L78 Accepts]: Start accepts. Automaton has 14495 states and 41779 transitions. Word has length 177 [2022-01-18 01:09:40,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:40,325 INFO L470 AbstractCegarLoop]: Abstraction has 14495 states and 41779 transitions. [2022-01-18 01:09:40,325 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) [2022-01-18 01:09:40,325 INFO L276 IsEmpty]: Start isEmpty. Operand 14495 states and 41779 transitions. [2022-01-18 01:09:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:40,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:40,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:40,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-18 01:09:40,346 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:40,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:40,347 INFO L85 PathProgramCache]: Analyzing trace with hash -301873108, now seen corresponding path program 5 times [2022-01-18 01:09:40,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:40,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121989157] [2022-01-18 01:09:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:40,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:40,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:40,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121989157] [2022-01-18 01:09:40,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121989157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:40,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:40,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:09:40,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787657427] [2022-01-18 01:09:40,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:40,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:09:40,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:40,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:09:40,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:09:40,717 INFO L87 Difference]: Start difference. First operand 14495 states and 41779 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) [2022-01-18 01:09:41,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:41,404 INFO L93 Difference]: Finished difference Result 26589 states and 76455 transitions. [2022-01-18 01:09:41,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:09:41,405 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 [2022-01-18 01:09:41,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:41,457 INFO L225 Difference]: With dead ends: 26589 [2022-01-18 01:09:41,457 INFO L226 Difference]: Without dead ends: 26589 [2022-01-18 01:09:41,458 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 [2022-01-18 01:09:41,458 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 940 mSDsluCounter, 3471 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 3741 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:41,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [940 Valid, 3741 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:09:41,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26589 states. [2022-01-18 01:09:41,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26589 to 14527. [2022-01-18 01:09:41,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14527 states, 14526 states have (on average 2.8838634173206663) internal successors, (41891), 14526 states have internal predecessors, (41891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14527 states to 14527 states and 41891 transitions. [2022-01-18 01:09:41,736 INFO L78 Accepts]: Start accepts. Automaton has 14527 states and 41891 transitions. Word has length 177 [2022-01-18 01:09:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:41,736 INFO L470 AbstractCegarLoop]: Abstraction has 14527 states and 41891 transitions. [2022-01-18 01:09:41,736 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) [2022-01-18 01:09:41,736 INFO L276 IsEmpty]: Start isEmpty. Operand 14527 states and 41891 transitions. [2022-01-18 01:09:41,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:41,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:41,756 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] [2022-01-18 01:09:41,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-18 01:09:41,756 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:41,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:41,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1828786670, now seen corresponding path program 2 times [2022-01-18 01:09:41,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:41,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167594299] [2022-01-18 01:09:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:41,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:42,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:42,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167594299] [2022-01-18 01:09:42,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167594299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:42,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:42,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:09:42,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746877765] [2022-01-18 01:09:42,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:42,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:09:42,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:42,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:09:42,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:09:42,163 INFO L87 Difference]: Start difference. First operand 14527 states and 41891 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) [2022-01-18 01:09:42,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:42,801 INFO L93 Difference]: Finished difference Result 26331 states and 75733 transitions. [2022-01-18 01:09:42,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:09:42,802 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 [2022-01-18 01:09:42,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:42,854 INFO L225 Difference]: With dead ends: 26331 [2022-01-18 01:09:42,854 INFO L226 Difference]: Without dead ends: 26331 [2022-01-18 01:09:42,854 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 [2022-01-18 01:09:42,854 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 924 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:42,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 3079 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:09:42,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26331 states. [2022-01-18 01:09:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26331 to 14543. [2022-01-18 01:09:43,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14543 states, 14542 states have (on average 2.883716132581488) internal successors, (41935), 14542 states have internal predecessors, (41935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14543 states to 14543 states and 41935 transitions. [2022-01-18 01:09:43,136 INFO L78 Accepts]: Start accepts. Automaton has 14543 states and 41935 transitions. Word has length 177 [2022-01-18 01:09:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:43,136 INFO L470 AbstractCegarLoop]: Abstraction has 14543 states and 41935 transitions. [2022-01-18 01:09:43,136 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) [2022-01-18 01:09:43,136 INFO L276 IsEmpty]: Start isEmpty. Operand 14543 states and 41935 transitions. [2022-01-18 01:09:43,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:43,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:43,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:43,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-18 01:09:43,157 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:43,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:43,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1627237780, now seen corresponding path program 8 times [2022-01-18 01:09:43,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:43,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690887624] [2022-01-18 01:09:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:43,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:43,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:43,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:43,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690887624] [2022-01-18 01:09:43,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690887624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:43,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:43,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:09:43,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183451543] [2022-01-18 01:09:43,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:43,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:09:43,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:43,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:09:43,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:09:43,558 INFO L87 Difference]: Start difference. First operand 14543 states and 41935 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) [2022-01-18 01:09:44,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:44,127 INFO L93 Difference]: Finished difference Result 25999 states and 74789 transitions. [2022-01-18 01:09:44,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:09:44,127 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 [2022-01-18 01:09:44,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:44,177 INFO L225 Difference]: With dead ends: 25999 [2022-01-18 01:09:44,177 INFO L226 Difference]: Without dead ends: 25999 [2022-01-18 01:09:44,178 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 [2022-01-18 01:09:44,178 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 1065 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:44,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1065 Valid, 2603 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:09:44,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25999 states. [2022-01-18 01:09:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25999 to 14543. [2022-01-18 01:09:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14543 states, 14542 states have (on average 2.883716132581488) internal successors, (41935), 14542 states have internal predecessors, (41935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:44,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14543 states to 14543 states and 41935 transitions. [2022-01-18 01:09:44,453 INFO L78 Accepts]: Start accepts. Automaton has 14543 states and 41935 transitions. Word has length 177 [2022-01-18 01:09:44,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:44,453 INFO L470 AbstractCegarLoop]: Abstraction has 14543 states and 41935 transitions. [2022-01-18 01:09:44,454 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) [2022-01-18 01:09:44,454 INFO L276 IsEmpty]: Start isEmpty. Operand 14543 states and 41935 transitions. [2022-01-18 01:09:44,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:44,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:44,474 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] [2022-01-18 01:09:44,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-18 01:09:44,474 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:44,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:44,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1163663038, now seen corresponding path program 5 times [2022-01-18 01:09:44,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:44,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189288171] [2022-01-18 01:09:44,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:44,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:44,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:44,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189288171] [2022-01-18 01:09:44,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189288171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:44,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:44,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:09:44,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625636399] [2022-01-18 01:09:44,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:44,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:09:44,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:44,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:09:44,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:09:44,935 INFO L87 Difference]: Start difference. First operand 14543 states and 41935 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) [2022-01-18 01:09:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:45,525 INFO L93 Difference]: Finished difference Result 26119 states and 75135 transitions. [2022-01-18 01:09:45,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:09:45,525 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 [2022-01-18 01:09:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:45,576 INFO L225 Difference]: With dead ends: 26119 [2022-01-18 01:09:45,576 INFO L226 Difference]: Without dead ends: 26119 [2022-01-18 01:09:45,577 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 [2022-01-18 01:09:45,577 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 793 mSDsluCounter, 2305 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:45,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 2619 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:09:45,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26119 states. [2022-01-18 01:09:45,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26119 to 14535. [2022-01-18 01:09:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14535 states, 14534 states have (on average 2.882688867483143) internal successors, (41897), 14534 states have internal predecessors, (41897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:45,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14535 states to 14535 states and 41897 transitions. [2022-01-18 01:09:45,867 INFO L78 Accepts]: Start accepts. Automaton has 14535 states and 41897 transitions. Word has length 177 [2022-01-18 01:09:45,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:45,867 INFO L470 AbstractCegarLoop]: Abstraction has 14535 states and 41897 transitions. [2022-01-18 01:09:45,867 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) [2022-01-18 01:09:45,867 INFO L276 IsEmpty]: Start isEmpty. Operand 14535 states and 41897 transitions. [2022-01-18 01:09:45,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:45,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:45,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:45,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-18 01:09:45,888 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:45,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:45,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1033050662, now seen corresponding path program 9 times [2022-01-18 01:09:45,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:45,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010991431] [2022-01-18 01:09:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:45,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:46,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:46,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010991431] [2022-01-18 01:09:46,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010991431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:46,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:46,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:09:46,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036774483] [2022-01-18 01:09:46,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:46,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:09:46,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:46,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:09:46,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:09:46,365 INFO L87 Difference]: Start difference. First operand 14535 states and 41897 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) [2022-01-18 01:09:47,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:47,133 INFO L93 Difference]: Finished difference Result 26335 states and 75721 transitions. [2022-01-18 01:09:47,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:09:47,134 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 [2022-01-18 01:09:47,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:47,180 INFO L225 Difference]: With dead ends: 26335 [2022-01-18 01:09:47,180 INFO L226 Difference]: Without dead ends: 26335 [2022-01-18 01:09:47,180 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 [2022-01-18 01:09:47,181 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1055 mSDsluCounter, 3232 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 3521 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:47,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1055 Valid, 3521 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:09:47,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26335 states. [2022-01-18 01:09:47,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26335 to 14519. [2022-01-18 01:09:47,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14519 states, 14518 states have (on average 2.882835101253616) internal successors, (41853), 14518 states have internal predecessors, (41853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14519 states to 14519 states and 41853 transitions. [2022-01-18 01:09:47,441 INFO L78 Accepts]: Start accepts. Automaton has 14519 states and 41853 transitions. Word has length 177 [2022-01-18 01:09:47,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:47,441 INFO L470 AbstractCegarLoop]: Abstraction has 14519 states and 41853 transitions. [2022-01-18 01:09:47,441 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) [2022-01-18 01:09:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand 14519 states and 41853 transitions. [2022-01-18 01:09:47,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:47,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:47,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:47,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-18 01:09:47,462 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1327933054, now seen corresponding path program 6 times [2022-01-18 01:09:47,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:47,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808872151] [2022-01-18 01:09:47,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:47,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:47,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:47,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:47,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808872151] [2022-01-18 01:09:47,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808872151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:47,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:47,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:09:47,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482999542] [2022-01-18 01:09:47,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:47,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:09:47,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:47,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:09:47,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:09:47,867 INFO L87 Difference]: Start difference. First operand 14519 states and 41853 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) [2022-01-18 01:09:48,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:48,687 INFO L93 Difference]: Finished difference Result 26127 states and 75141 transitions. [2022-01-18 01:09:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:09:48,688 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 [2022-01-18 01:09:48,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:48,756 INFO L225 Difference]: With dead ends: 26127 [2022-01-18 01:09:48,756 INFO L226 Difference]: Without dead ends: 26127 [2022-01-18 01:09:48,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=391, Invalid=1169, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 01:09:48,757 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 938 mSDsluCounter, 2864 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:48,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 3149 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:09:48,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26127 states. [2022-01-18 01:09:49,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26127 to 14535. [2022-01-18 01:09:49,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14535 states, 14534 states have (on average 2.882688867483143) internal successors, (41897), 14534 states have internal predecessors, (41897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14535 states to 14535 states and 41897 transitions. [2022-01-18 01:09:49,117 INFO L78 Accepts]: Start accepts. Automaton has 14535 states and 41897 transitions. Word has length 177 [2022-01-18 01:09:49,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:49,118 INFO L470 AbstractCegarLoop]: Abstraction has 14535 states and 41897 transitions. [2022-01-18 01:09:49,118 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) [2022-01-18 01:09:49,118 INFO L276 IsEmpty]: Start isEmpty. Operand 14535 states and 41897 transitions. [2022-01-18 01:09:49,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:49,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:49,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:49,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-18 01:09:49,144 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:49,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:49,145 INFO L85 PathProgramCache]: Analyzing trace with hash -766430368, now seen corresponding path program 7 times [2022-01-18 01:09:49,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:49,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448547993] [2022-01-18 01:09:49,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:49,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:49,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:49,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448547993] [2022-01-18 01:09:49,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448547993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:49,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:49,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:09:49,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382205601] [2022-01-18 01:09:49,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:49,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:09:49,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:49,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:09:49,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:09:49,520 INFO L87 Difference]: Start difference. First operand 14535 states and 41897 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) [2022-01-18 01:09:50,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:50,317 INFO L93 Difference]: Finished difference Result 26991 states and 77613 transitions. [2022-01-18 01:09:50,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:09:50,317 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 [2022-01-18 01:09:50,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:50,370 INFO L225 Difference]: With dead ends: 26991 [2022-01-18 01:09:50,370 INFO L226 Difference]: Without dead ends: 26991 [2022-01-18 01:09:50,371 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 [2022-01-18 01:09:50,371 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 895 mSDsluCounter, 3865 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:50,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 4169 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:09:50,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26991 states. [2022-01-18 01:09:50,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26991 to 14495. [2022-01-18 01:09:50,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14495 states, 14494 states have (on average 2.8825031047329928) internal successors, (41779), 14494 states have internal predecessors, (41779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14495 states to 14495 states and 41779 transitions. [2022-01-18 01:09:50,648 INFO L78 Accepts]: Start accepts. Automaton has 14495 states and 41779 transitions. Word has length 177 [2022-01-18 01:09:50,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:50,648 INFO L470 AbstractCegarLoop]: Abstraction has 14495 states and 41779 transitions. [2022-01-18 01:09:50,649 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) [2022-01-18 01:09:50,649 INFO L276 IsEmpty]: Start isEmpty. Operand 14495 states and 41779 transitions. [2022-01-18 01:09:50,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:50,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:50,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:50,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-18 01:09:50,669 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:50,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:50,669 INFO L85 PathProgramCache]: Analyzing trace with hash 482623248, now seen corresponding path program 6 times [2022-01-18 01:09:50,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:50,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960167572] [2022-01-18 01:09:50,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:50,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:51,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:51,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960167572] [2022-01-18 01:09:51,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960167572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:51,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:51,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:09:51,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206687050] [2022-01-18 01:09:51,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:51,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:09:51,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:51,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:09:51,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:09:51,031 INFO L87 Difference]: Start difference. First operand 14495 states and 41779 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) [2022-01-18 01:09:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:51,820 INFO L93 Difference]: Finished difference Result 30572 states and 87874 transitions. [2022-01-18 01:09:51,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:09:51,820 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 [2022-01-18 01:09:51,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:51,881 INFO L225 Difference]: With dead ends: 30572 [2022-01-18 01:09:51,881 INFO L226 Difference]: Without dead ends: 30572 [2022-01-18 01:09:51,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=442, Invalid=1364, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 01:09:51,882 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 1424 mSDsluCounter, 3701 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 4008 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:51,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1424 Valid, 4008 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:09:51,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30572 states. [2022-01-18 01:09:52,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30572 to 14779. [2022-01-18 01:09:52,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14779 states, 14778 states have (on average 2.880430369468128) internal successors, (42567), 14778 states have internal predecessors, (42567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14779 states to 14779 states and 42567 transitions. [2022-01-18 01:09:52,183 INFO L78 Accepts]: Start accepts. Automaton has 14779 states and 42567 transitions. Word has length 177 [2022-01-18 01:09:52,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:52,183 INFO L470 AbstractCegarLoop]: Abstraction has 14779 states and 42567 transitions. [2022-01-18 01:09:52,183 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) [2022-01-18 01:09:52,183 INFO L276 IsEmpty]: Start isEmpty. Operand 14779 states and 42567 transitions. [2022-01-18 01:09:52,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:52,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:52,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:52,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-18 01:09:52,203 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:52,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:52,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1354846062, now seen corresponding path program 7 times [2022-01-18 01:09:52,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:52,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481665330] [2022-01-18 01:09:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:52,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:52,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:52,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:52,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481665330] [2022-01-18 01:09:52,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481665330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:52,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:52,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:09:52,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160370608] [2022-01-18 01:09:52,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:52,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:09:52,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:52,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:09:52,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:09:52,636 INFO L87 Difference]: Start difference. First operand 14779 states and 42567 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) [2022-01-18 01:09:53,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:53,411 INFO L93 Difference]: Finished difference Result 27869 states and 80321 transitions. [2022-01-18 01:09:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:09:53,411 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 [2022-01-18 01:09:53,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:53,467 INFO L225 Difference]: With dead ends: 27869 [2022-01-18 01:09:53,467 INFO L226 Difference]: Without dead ends: 27869 [2022-01-18 01:09:53,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=396, Invalid=1244, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 01:09:53,468 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 931 mSDsluCounter, 2959 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 3281 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:53,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 3281 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:09:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27869 states. [2022-01-18 01:09:53,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27869 to 14787. [2022-01-18 01:09:53,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14787 states, 14786 states have (on average 2.8809008521574464) internal successors, (42597), 14786 states have internal predecessors, (42597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14787 states to 14787 states and 42597 transitions. [2022-01-18 01:09:53,754 INFO L78 Accepts]: Start accepts. Automaton has 14787 states and 42597 transitions. Word has length 177 [2022-01-18 01:09:53,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:53,754 INFO L470 AbstractCegarLoop]: Abstraction has 14787 states and 42597 transitions. [2022-01-18 01:09:53,754 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) [2022-01-18 01:09:53,754 INFO L276 IsEmpty]: Start isEmpty. Operand 14787 states and 42597 transitions. [2022-01-18 01:09:53,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:53,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:53,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:53,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-18 01:09:53,775 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:53,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:53,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1218579082, now seen corresponding path program 3 times [2022-01-18 01:09:53,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:53,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718943641] [2022-01-18 01:09:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:53,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:54,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:54,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718943641] [2022-01-18 01:09:54,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718943641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:09:54,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:09:54,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:09:54,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351067269] [2022-01-18 01:09:54,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:09:54,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:09:54,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:54,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:09:54,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:09:54,163 INFO L87 Difference]: Start difference. First operand 14787 states and 42597 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) [2022-01-18 01:09:54,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:09:54,882 INFO L93 Difference]: Finished difference Result 27319 states and 78689 transitions. [2022-01-18 01:09:54,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:09:54,882 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 [2022-01-18 01:09:54,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:09:54,942 INFO L225 Difference]: With dead ends: 27319 [2022-01-18 01:09:54,942 INFO L226 Difference]: Without dead ends: 27319 [2022-01-18 01:09:54,942 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 [2022-01-18 01:09:54,943 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 1004 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 3673 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:09:54,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1004 Valid, 3673 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 965 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:09:54,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27319 states. [2022-01-18 01:09:55,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27319 to 14819. [2022-01-18 01:09:55,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14819 states, 14818 states have (on average 2.8806181670940747) internal successors, (42685), 14818 states have internal predecessors, (42685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:09:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14819 states to 14819 states and 42685 transitions. [2022-01-18 01:09:55,227 INFO L78 Accepts]: Start accepts. Automaton has 14819 states and 42685 transitions. Word has length 177 [2022-01-18 01:09:55,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:09:55,227 INFO L470 AbstractCegarLoop]: Abstraction has 14819 states and 42685 transitions. [2022-01-18 01:09:55,227 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) [2022-01-18 01:09:55,227 INFO L276 IsEmpty]: Start isEmpty. Operand 14819 states and 42685 transitions. [2022-01-18 01:09:55,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:09:55,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:09:55,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:09:55,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-18 01:09:55,248 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:09:55,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:09:55,249 INFO L85 PathProgramCache]: Analyzing trace with hash 24291170, now seen corresponding path program 4 times [2022-01-18 01:09:55,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:09:55,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374775345] [2022-01-18 01:09:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:09:55,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:09:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:09:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:09:55,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:09:55,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374775345] [2022-01-18 01:09:55,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374775345] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:09:55,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981166057] [2022-01-18 01:09:55,563 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:09:55,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:09:55,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:09:55,564 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) [2022-01-18 01:09:55,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 01:09:55,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:09:55,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:09:55,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-18 01:09:55,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:09:56,159 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 [2022-01-18 01:09:56,356 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 [2022-01-18 01:09:56,475 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 [2022-01-18 01:09:56,689 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-18 01:09:56,690 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 [2022-01-18 01:09:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:09:56,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:09:58,867 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 [2022-01-18 01:09:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-01-18 01:09:58,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981166057] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:09:58,972 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:09:58,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 46 [2022-01-18 01:09:58,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135099080] [2022-01-18 01:09:58,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:09:58,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 01:09:58,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:09:58,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 01:09:58,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1780, Unknown=5, NotChecked=86, Total=2070 [2022-01-18 01:09:58,974 INFO L87 Difference]: Start difference. First operand 14819 states and 42685 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) [2022-01-18 01:09:59,414 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| 1)) (.cse0 (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1))) (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t2~0#1.base|) (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 0) (< .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base|) (forall ((v_ArrVal_996 (Array Int Int)) (~get1~0.base Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_996))) (let ((.cse2 (select .cse4 c_~get2~0.base)) (.cse1 (select .cse4 ~get1~0.base))) (or (= (select .cse1 c_~get1~0.offset) (select .cse2 c_~get2~0.offset)) (not (let ((.cse3 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse2 (+ c_~get2~0.offset .cse3)) (select .cse1 (+ c_~get1~0.offset .cse3))))))))) (< .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base|) (< .cse5 |c_ULTIMATE.start_main_~#t2~0#1.base|) (= c_~get1~0.offset 0) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (< .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base|) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t1~0#1.base|))) is different from false [2022-01-18 01:10:00,392 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.base| 1)) (.cse0 (+ |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 1))) (and (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t2~0#1.base|) (= |c_thread2Thread1of1ForFork1_#t~mem9| |c_thread2Thread1of1ForFork1_#t~mem10|) (= |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 0) (< .cse0 |c_ULTIMATE.start_main_~#t1~0#1.base|) (forall ((v_ArrVal_996 (Array Int Int)) (~get1~0.base Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_996))) (let ((.cse2 (select .cse4 c_~get2~0.base)) (.cse1 (select .cse4 ~get1~0.base))) (or (= (select .cse1 c_~get1~0.offset) (select .cse2 c_~get2~0.offset)) (not (let ((.cse3 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse2 (+ c_~get2~0.offset .cse3)) (select .cse1 (+ c_~get1~0.offset .cse3))))))))) (< .cse5 |c_ULTIMATE.start_main_~#t1~0#1.base|) (< .cse5 |c_ULTIMATE.start_main_~#t2~0#1.base|) (= c_~get1~0.offset 0) (= 0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (< .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base|) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t1~0#1.base|))) is different from false [2022-01-18 01:10:03,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:03,048 INFO L93 Difference]: Finished difference Result 56228 states and 162599 transitions. [2022-01-18 01:10:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 01:10:03,049 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 [2022-01-18 01:10:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:03,214 INFO L225 Difference]: With dead ends: 56228 [2022-01-18 01:10:03,214 INFO L226 Difference]: Without dead ends: 56228 [2022-01-18 01:10:03,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 3 IntricatePredicates, 3 DeprecatedPredicates, 3043 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2288, Invalid=9058, Unknown=8, NotChecked=636, Total=11990 [2022-01-18 01:10:03,217 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 3590 mSDsluCounter, 7856 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3590 SdHoareTripleChecker+Valid, 8117 SdHoareTripleChecker+Invalid, 3516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1330 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:03,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3590 Valid, 8117 Invalid, 3516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2151 Invalid, 0 Unknown, 1330 Unchecked, 0.9s Time] [2022-01-18 01:10:03,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56228 states. [2022-01-18 01:10:03,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56228 to 14943. [2022-01-18 01:10:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14943 states, 14942 states have (on average 2.8809396332485613) internal successors, (43047), 14942 states have internal predecessors, (43047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:03,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14943 states to 14943 states and 43047 transitions. [2022-01-18 01:10:03,779 INFO L78 Accepts]: Start accepts. Automaton has 14943 states and 43047 transitions. Word has length 177 [2022-01-18 01:10:03,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:03,779 INFO L470 AbstractCegarLoop]: Abstraction has 14943 states and 43047 transitions. [2022-01-18 01:10:03,779 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) [2022-01-18 01:10:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 14943 states and 43047 transitions. [2022-01-18 01:10:03,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:03,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:03,800 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] [2022-01-18 01:10:03,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 01:10:04,000 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 [2022-01-18 01:10:04,001 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:04,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:04,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1101578668, now seen corresponding path program 8 times [2022-01-18 01:10:04,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:04,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723913992] [2022-01-18 01:10:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:04,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:04,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:04,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723913992] [2022-01-18 01:10:04,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723913992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:04,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:04,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:10:04,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550847981] [2022-01-18 01:10:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:04,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:10:04,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:10:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:10:04,359 INFO L87 Difference]: Start difference. First operand 14943 states and 43047 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) [2022-01-18 01:10:04,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:04,976 INFO L93 Difference]: Finished difference Result 27597 states and 79423 transitions. [2022-01-18 01:10:04,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:10:04,976 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 [2022-01-18 01:10:04,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:05,030 INFO L225 Difference]: With dead ends: 27597 [2022-01-18 01:10:05,030 INFO L226 Difference]: Without dead ends: 27597 [2022-01-18 01:10:05,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:10:05,031 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 886 mSDsluCounter, 3103 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 3413 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:05,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [886 Valid, 3413 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:10:05,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27597 states. [2022-01-18 01:10:05,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27597 to 14959. [2022-01-18 01:10:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14959 states, 14958 states have (on average 2.8818692338547933) internal successors, (43107), 14958 states have internal predecessors, (43107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:05,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14959 states to 14959 states and 43107 transitions. [2022-01-18 01:10:05,320 INFO L78 Accepts]: Start accepts. Automaton has 14959 states and 43107 transitions. Word has length 177 [2022-01-18 01:10:05,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:05,321 INFO L470 AbstractCegarLoop]: Abstraction has 14959 states and 43107 transitions. [2022-01-18 01:10:05,321 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) [2022-01-18 01:10:05,321 INFO L276 IsEmpty]: Start isEmpty. Operand 14959 states and 43107 transitions. [2022-01-18 01:10:05,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:05,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:05,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:05,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-18 01:10:05,343 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:05,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:05,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1666475066, now seen corresponding path program 5 times [2022-01-18 01:10:05,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:05,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029765355] [2022-01-18 01:10:05,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:05,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:05,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:05,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:05,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029765355] [2022-01-18 01:10:05,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029765355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:05,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:05,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:10:05,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260264450] [2022-01-18 01:10:05,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:05,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:10:05,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:05,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:10:05,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:10:05,812 INFO L87 Difference]: Start difference. First operand 14959 states and 43107 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) [2022-01-18 01:10:06,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:06,436 INFO L93 Difference]: Finished difference Result 27347 states and 78731 transitions. [2022-01-18 01:10:06,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:10:06,436 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 [2022-01-18 01:10:06,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:06,491 INFO L225 Difference]: With dead ends: 27347 [2022-01-18 01:10:06,491 INFO L226 Difference]: Without dead ends: 27347 [2022-01-18 01:10:06,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:10:06,492 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 945 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:06,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [945 Valid, 2796 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:10:06,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27347 states. [2022-01-18 01:10:06,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27347 to 14967. [2022-01-18 01:10:06,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14967 states, 14966 states have (on average 2.8817987438193238) internal successors, (43129), 14966 states have internal predecessors, (43129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:06,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14967 states to 14967 states and 43129 transitions. [2022-01-18 01:10:06,782 INFO L78 Accepts]: Start accepts. Automaton has 14967 states and 43129 transitions. Word has length 177 [2022-01-18 01:10:06,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:06,783 INFO L470 AbstractCegarLoop]: Abstraction has 14967 states and 43129 transitions. [2022-01-18 01:10:06,783 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) [2022-01-18 01:10:06,783 INFO L276 IsEmpty]: Start isEmpty. Operand 14967 states and 43129 transitions. [2022-01-18 01:10:06,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:06,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:06,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:06,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-18 01:10:06,804 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:06,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:06,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1868023956, now seen corresponding path program 10 times [2022-01-18 01:10:06,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:06,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131512484] [2022-01-18 01:10:06,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:06,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:07,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:07,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131512484] [2022-01-18 01:10:07,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131512484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:07,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:07,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:10:07,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627492129] [2022-01-18 01:10:07,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:07,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:10:07,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:07,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:10:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:10:07,211 INFO L87 Difference]: Start difference. First operand 14967 states and 43129 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) [2022-01-18 01:10:07,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:07,797 INFO L93 Difference]: Finished difference Result 27119 states and 78073 transitions. [2022-01-18 01:10:07,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:10:07,798 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 [2022-01-18 01:10:07,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:07,850 INFO L225 Difference]: With dead ends: 27119 [2022-01-18 01:10:07,851 INFO L226 Difference]: Without dead ends: 27119 [2022-01-18 01:10:07,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=336, Invalid=1070, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:10:07,851 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 1548 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1548 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:07,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1548 Valid, 2702 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:10:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27119 states. [2022-01-18 01:10:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27119 to 14959. [2022-01-18 01:10:08,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14959 states, 14958 states have (on average 2.8818692338547933) internal successors, (43107), 14958 states have internal predecessors, (43107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:08,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14959 states to 14959 states and 43107 transitions. [2022-01-18 01:10:08,147 INFO L78 Accepts]: Start accepts. Automaton has 14959 states and 43107 transitions. Word has length 177 [2022-01-18 01:10:08,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:08,147 INFO L470 AbstractCegarLoop]: Abstraction has 14959 states and 43107 transitions. [2022-01-18 01:10:08,147 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) [2022-01-18 01:10:08,147 INFO L276 IsEmpty]: Start isEmpty. Operand 14959 states and 43107 transitions. [2022-01-18 01:10:08,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:08,168 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:08,168 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] [2022-01-18 01:10:08,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-18 01:10:08,169 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:08,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:08,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1963368598, now seen corresponding path program 8 times [2022-01-18 01:10:08,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:08,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466448999] [2022-01-18 01:10:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:08,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:08,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:08,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466448999] [2022-01-18 01:10:08,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466448999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:08,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:08,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:10:08,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212596992] [2022-01-18 01:10:08,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:08,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:10:08,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:08,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:10:08,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:10:08,552 INFO L87 Difference]: Start difference. First operand 14959 states and 43107 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) [2022-01-18 01:10:09,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:09,088 INFO L93 Difference]: Finished difference Result 27103 states and 78037 transitions. [2022-01-18 01:10:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:10:09,088 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 [2022-01-18 01:10:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:09,138 INFO L225 Difference]: With dead ends: 27103 [2022-01-18 01:10:09,138 INFO L226 Difference]: Without dead ends: 27103 [2022-01-18 01:10:09,139 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 [2022-01-18 01:10:09,139 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 1087 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:09,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 2661 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 01:10:09,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27103 states. [2022-01-18 01:10:09,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27103 to 14967. [2022-01-18 01:10:09,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14967 states, 14966 states have (on average 2.8801951089135374) internal successors, (43105), 14966 states have internal predecessors, (43105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:09,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14967 states to 14967 states and 43105 transitions. [2022-01-18 01:10:09,415 INFO L78 Accepts]: Start accepts. Automaton has 14967 states and 43105 transitions. Word has length 177 [2022-01-18 01:10:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:09,415 INFO L470 AbstractCegarLoop]: Abstraction has 14967 states and 43105 transitions. [2022-01-18 01:10:09,415 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) [2022-01-18 01:10:09,415 INFO L276 IsEmpty]: Start isEmpty. Operand 14967 states and 43105 transitions. [2022-01-18 01:10:09,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:09,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:09,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:09,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-18 01:10:09,436 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1840144822, now seen corresponding path program 6 times [2022-01-18 01:10:09,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:09,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120375337] [2022-01-18 01:10:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:09,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:09,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:09,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120375337] [2022-01-18 01:10:09,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120375337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:09,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:09,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:10:09,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224723259] [2022-01-18 01:10:09,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:09,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:10:09,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:09,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:10:09,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:10:09,771 INFO L87 Difference]: Start difference. First operand 14967 states and 43105 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) [2022-01-18 01:10:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:10,535 INFO L93 Difference]: Finished difference Result 27739 states and 79801 transitions. [2022-01-18 01:10:10,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:10:10,535 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 [2022-01-18 01:10:10,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:10,586 INFO L225 Difference]: With dead ends: 27739 [2022-01-18 01:10:10,586 INFO L226 Difference]: Without dead ends: 27739 [2022-01-18 01:10:10,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=433, Invalid=1289, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 01:10:10,590 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 1172 mSDsluCounter, 3624 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 3940 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:10,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 3940 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:10:10,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27739 states. [2022-01-18 01:10:10,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27739 to 14999. [2022-01-18 01:10:10,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14999 states, 14998 states have (on average 2.8799173223096415) internal successors, (43193), 14998 states have internal predecessors, (43193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14999 states to 14999 states and 43193 transitions. [2022-01-18 01:10:10,886 INFO L78 Accepts]: Start accepts. Automaton has 14999 states and 43193 transitions. Word has length 177 [2022-01-18 01:10:10,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:10,887 INFO L470 AbstractCegarLoop]: Abstraction has 14999 states and 43193 transitions. [2022-01-18 01:10:10,887 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) [2022-01-18 01:10:10,887 INFO L276 IsEmpty]: Start isEmpty. Operand 14999 states and 43193 transitions. [2022-01-18 01:10:10,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:10,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:10,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:10,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-18 01:10:10,908 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:10,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:10,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1211952222, now seen corresponding path program 7 times [2022-01-18 01:10:10,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:10,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114132992] [2022-01-18 01:10:10,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:10,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:11,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:11,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114132992] [2022-01-18 01:10:11,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114132992] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:10:11,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727483324] [2022-01-18 01:10:11,280 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:10:11,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:10:11,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:10:11,281 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) [2022-01-18 01:10:11,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 01:10:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:11,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-18 01:10:11,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:10:11,430 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 [2022-01-18 01:10:11,550 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 01:10:11,551 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 [2022-01-18 01:10:11,657 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 [2022-01-18 01:10:11,918 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 01:10:11,918 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 [2022-01-18 01:10:12,025 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 [2022-01-18 01:10:12,181 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 [2022-01-18 01:10:12,270 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 [2022-01-18 01:10:12,521 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-18 01:10:12,522 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 [2022-01-18 01:10:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:10:12,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:10:12,886 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 [2022-01-18 01:10:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-01-18 01:10:13,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727483324] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:10:13,014 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:10:13,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-01-18 01:10:13,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192391852] [2022-01-18 01:10:13,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:10:13,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 01:10:13,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:13,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 01:10:13,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2162, Unknown=1, NotChecked=94, Total=2450 [2022-01-18 01:10:13,016 INFO L87 Difference]: Start difference. First operand 14999 states and 43193 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) [2022-01-18 01:10:16,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:16,302 INFO L93 Difference]: Finished difference Result 33243 states and 95593 transitions. [2022-01-18 01:10:16,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 01:10:16,303 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 [2022-01-18 01:10:16,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:16,366 INFO L225 Difference]: With dead ends: 33243 [2022-01-18 01:10:16,366 INFO L226 Difference]: Without dead ends: 33243 [2022-01-18 01:10:16,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 340 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1853 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1765, Invalid=7358, Unknown=1, NotChecked=188, Total=9312 [2022-01-18 01:10:16,367 INFO L933 BasicCegarLoop]: 459 mSDtfsCounter, 3352 mSDsluCounter, 8708 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3352 SdHoareTripleChecker+Valid, 8945 SdHoareTripleChecker+Invalid, 3320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 825 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:16,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3352 Valid, 8945 Invalid, 3320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2446 Invalid, 0 Unknown, 825 Unchecked, 1.0s Time] [2022-01-18 01:10:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33243 states. [2022-01-18 01:10:16,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33243 to 14935. [2022-01-18 01:10:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14935 states, 14934 states have (on average 2.8804740859783045) internal successors, (43017), 14934 states have internal predecessors, (43017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:16,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14935 states to 14935 states and 43017 transitions. [2022-01-18 01:10:16,729 INFO L78 Accepts]: Start accepts. Automaton has 14935 states and 43017 transitions. Word has length 177 [2022-01-18 01:10:16,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:16,729 INFO L470 AbstractCegarLoop]: Abstraction has 14935 states and 43017 transitions. [2022-01-18 01:10:16,729 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) [2022-01-18 01:10:16,729 INFO L276 IsEmpty]: Start isEmpty. Operand 14935 states and 43017 transitions. [2022-01-18 01:10:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:16,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:16,751 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:16,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 01:10:16,951 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 [2022-01-18 01:10:16,951 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:16,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:16,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1165193162, now seen corresponding path program 9 times [2022-01-18 01:10:16,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:16,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790446031] [2022-01-18 01:10:16,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:16,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:17,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:17,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:17,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790446031] [2022-01-18 01:10:17,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790446031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:17,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:17,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:10:17,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962142615] [2022-01-18 01:10:17,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:17,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:10:17,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:17,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:10:17,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:10:17,295 INFO L87 Difference]: Start difference. First operand 14935 states and 43017 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) [2022-01-18 01:10:17,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:17,992 INFO L93 Difference]: Finished difference Result 28001 states and 80673 transitions. [2022-01-18 01:10:17,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:10:17,993 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 [2022-01-18 01:10:17,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:18,046 INFO L225 Difference]: With dead ends: 28001 [2022-01-18 01:10:18,046 INFO L226 Difference]: Without dead ends: 28001 [2022-01-18 01:10:18,046 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 [2022-01-18 01:10:18,046 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1120 mSDsluCounter, 3278 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 3569 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:18,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 3569 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:10:18,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28001 states. [2022-01-18 01:10:18,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28001 to 14935. [2022-01-18 01:10:18,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14935 states, 14934 states have (on average 2.8804740859783045) internal successors, (43017), 14934 states have internal predecessors, (43017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:18,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14935 states to 14935 states and 43017 transitions. [2022-01-18 01:10:18,339 INFO L78 Accepts]: Start accepts. Automaton has 14935 states and 43017 transitions. Word has length 177 [2022-01-18 01:10:18,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:18,339 INFO L470 AbstractCegarLoop]: Abstraction has 14935 states and 43017 transitions. [2022-01-18 01:10:18,339 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) [2022-01-18 01:10:18,339 INFO L276 IsEmpty]: Start isEmpty. Operand 14935 states and 43017 transitions. [2022-01-18 01:10:18,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:18,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:18,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:18,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-18 01:10:18,360 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:18,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:18,360 INFO L85 PathProgramCache]: Analyzing trace with hash 556348990, now seen corresponding path program 8 times [2022-01-18 01:10:18,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:18,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398220998] [2022-01-18 01:10:18,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:18,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:18,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:18,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398220998] [2022-01-18 01:10:18,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398220998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:18,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:18,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:10:18,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239131120] [2022-01-18 01:10:18,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:18,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:10:18,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:18,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:10:18,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:10:18,690 INFO L87 Difference]: Start difference. First operand 14935 states and 43017 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) [2022-01-18 01:10:19,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:19,330 INFO L93 Difference]: Finished difference Result 27371 states and 78789 transitions. [2022-01-18 01:10:19,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:10:19,330 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 [2022-01-18 01:10:19,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:19,381 INFO L225 Difference]: With dead ends: 27371 [2022-01-18 01:10:19,381 INFO L226 Difference]: Without dead ends: 27371 [2022-01-18 01:10:19,382 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 [2022-01-18 01:10:19,382 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 919 mSDsluCounter, 2619 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 2922 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:19,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [919 Valid, 2922 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:10:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27371 states. [2022-01-18 01:10:19,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27371 to 14935. [2022-01-18 01:10:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14935 states, 14934 states have (on average 2.8804740859783045) internal successors, (43017), 14934 states have internal predecessors, (43017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:19,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14935 states to 14935 states and 43017 transitions. [2022-01-18 01:10:19,662 INFO L78 Accepts]: Start accepts. Automaton has 14935 states and 43017 transitions. Word has length 177 [2022-01-18 01:10:19,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:19,662 INFO L470 AbstractCegarLoop]: Abstraction has 14935 states and 43017 transitions. [2022-01-18 01:10:19,662 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) [2022-01-18 01:10:19,662 INFO L276 IsEmpty]: Start isEmpty. Operand 14935 states and 43017 transitions. [2022-01-18 01:10:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:19,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:19,683 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] [2022-01-18 01:10:19,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-18 01:10:19,683 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:19,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:19,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1799219242, now seen corresponding path program 9 times [2022-01-18 01:10:19,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:19,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776778991] [2022-01-18 01:10:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:19,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:20,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:20,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776778991] [2022-01-18 01:10:20,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776778991] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:10:20,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257574453] [2022-01-18 01:10:20,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:10:20,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:10:20,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:10:20,035 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) [2022-01-18 01:10:20,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 01:10:20,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 01:10:20,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:10:20,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-18 01:10:20,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:10:20,532 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-18 01:10:20,533 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 [2022-01-18 01:10:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:20,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:10:20,739 INFO L353 Elim1Store]: treesize reduction 56, result has 48.6 percent of original size [2022-01-18 01:10:20,739 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 [2022-01-18 01:10:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:20,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257574453] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:10:20,888 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:10:20,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 29 [2022-01-18 01:10:20,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071280773] [2022-01-18 01:10:20,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:10:20,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 01:10:20,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:20,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 01:10:20,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2022-01-18 01:10:20,892 INFO L87 Difference]: Start difference. First operand 14935 states and 43017 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) [2022-01-18 01:10:22,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:22,169 INFO L93 Difference]: Finished difference Result 29931 states and 85979 transitions. [2022-01-18 01:10:22,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 01:10:22,170 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 [2022-01-18 01:10:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:22,228 INFO L225 Difference]: With dead ends: 29931 [2022-01-18 01:10:22,228 INFO L226 Difference]: Without dead ends: 29931 [2022-01-18 01:10:22,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 356 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=904, Invalid=3386, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 01:10:22,229 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 1227 mSDsluCounter, 5397 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 5692 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 286 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:22,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 5692 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1287 Invalid, 0 Unknown, 286 Unchecked, 0.5s Time] [2022-01-18 01:10:22,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29931 states. [2022-01-18 01:10:22,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29931 to 15023. [2022-01-18 01:10:22,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15023 states, 15022 states have (on average 2.879842897084276) internal successors, (43261), 15022 states have internal predecessors, (43261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:22,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15023 states to 15023 states and 43261 transitions. [2022-01-18 01:10:22,628 INFO L78 Accepts]: Start accepts. Automaton has 15023 states and 43261 transitions. Word has length 177 [2022-01-18 01:10:22,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:22,628 INFO L470 AbstractCegarLoop]: Abstraction has 15023 states and 43261 transitions. [2022-01-18 01:10:22,629 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) [2022-01-18 01:10:22,629 INFO L276 IsEmpty]: Start isEmpty. Operand 15023 states and 43261 transitions. [2022-01-18 01:10:22,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:22,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:22,648 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] [2022-01-18 01:10:22,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 01:10:22,849 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 [2022-01-18 01:10:22,849 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:22,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:22,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1836155134, now seen corresponding path program 10 times [2022-01-18 01:10:22,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:22,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631367754] [2022-01-18 01:10:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:22,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:23,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:23,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631367754] [2022-01-18 01:10:23,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631367754] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:10:23,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288139397] [2022-01-18 01:10:23,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:10:23,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:10:23,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:10:23,182 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) [2022-01-18 01:10:23,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 01:10:23,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:10:23,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:10:23,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-18 01:10:23,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:10:23,766 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 [2022-01-18 01:10:23,913 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 [2022-01-18 01:10:24,014 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 [2022-01-18 01:10:24,252 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-18 01:10:24,253 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 [2022-01-18 01:10:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:10:24,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:10:25,953 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_1215 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1215))) (let ((.cse0 (select .cse3 ~get1~0.base)) (.cse2 (select .cse3 c_~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 [2022-01-18 01:10:26,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-01-18 01:10:26,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288139397] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:10:26,091 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:10:26,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 45 [2022-01-18 01:10:26,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257088884] [2022-01-18 01:10:26,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:10:26,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 01:10:26,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:26,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 01:10:26,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1696, Unknown=3, NotChecked=84, Total=1980 [2022-01-18 01:10:26,093 INFO L87 Difference]: Start difference. First operand 15023 states and 43261 transitions. Second operand has 45 states, 45 states have (on average 8.377777777777778) internal successors, (377), 45 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:28,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:28,075 INFO L93 Difference]: Finished difference Result 29228 states and 84242 transitions. [2022-01-18 01:10:28,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 01:10:28,075 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.377777777777778) internal successors, (377), 45 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have 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 [2022-01-18 01:10:28,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:28,131 INFO L225 Difference]: With dead ends: 29228 [2022-01-18 01:10:28,131 INFO L226 Difference]: Without dead ends: 29228 [2022-01-18 01:10:28,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 341 SyntacticMatches, 7 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1437 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1174, Invalid=4679, Unknown=3, NotChecked=150, Total=6006 [2022-01-18 01:10:28,132 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 2223 mSDsluCounter, 5701 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2223 SdHoareTripleChecker+Valid, 5926 SdHoareTripleChecker+Invalid, 2572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 746 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:28,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2223 Valid, 5926 Invalid, 2572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1799 Invalid, 0 Unknown, 746 Unchecked, 0.7s Time] [2022-01-18 01:10:28,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29228 states. [2022-01-18 01:10:28,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29228 to 14935. [2022-01-18 01:10:28,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14935 states, 14934 states have (on average 2.8804740859783045) internal successors, (43017), 14934 states have internal predecessors, (43017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:28,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14935 states to 14935 states and 43017 transitions. [2022-01-18 01:10:28,444 INFO L78 Accepts]: Start accepts. Automaton has 14935 states and 43017 transitions. Word has length 177 [2022-01-18 01:10:28,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:28,445 INFO L470 AbstractCegarLoop]: Abstraction has 14935 states and 43017 transitions. [2022-01-18 01:10:28,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.377777777777778) internal successors, (377), 45 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 14935 states and 43017 transitions. [2022-01-18 01:10:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:28,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:28,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:28,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-01-18 01:10:28,665 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,SelfDestructingSolverStorable68 [2022-01-18 01:10:28,666 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:28,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:28,666 INFO L85 PathProgramCache]: Analyzing trace with hash 673349404, now seen corresponding path program 10 times [2022-01-18 01:10:28,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:28,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735457649] [2022-01-18 01:10:28,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:28,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:29,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:29,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735457649] [2022-01-18 01:10:29,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735457649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:29,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:29,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:10:29,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663783135] [2022-01-18 01:10:29,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:29,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:10:29,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:29,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:10:29,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:10:29,028 INFO L87 Difference]: Start difference. First operand 14935 states and 43017 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) [2022-01-18 01:10:29,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:29,699 INFO L93 Difference]: Finished difference Result 27637 states and 79549 transitions. [2022-01-18 01:10:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:10:29,700 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 [2022-01-18 01:10:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:29,752 INFO L225 Difference]: With dead ends: 27637 [2022-01-18 01:10:29,752 INFO L226 Difference]: Without dead ends: 27637 [2022-01-18 01:10:29,752 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 [2022-01-18 01:10:29,752 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 994 mSDsluCounter, 3255 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:29,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [994 Valid, 3540 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:10:29,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27637 states. [2022-01-18 01:10:29,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27637 to 14951. [2022-01-18 01:10:30,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14951 states, 14950 states have (on average 2.8814046822742476) internal successors, (43077), 14950 states have internal predecessors, (43077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14951 states to 14951 states and 43077 transitions. [2022-01-18 01:10:30,036 INFO L78 Accepts]: Start accepts. Automaton has 14951 states and 43077 transitions. Word has length 177 [2022-01-18 01:10:30,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:30,036 INFO L470 AbstractCegarLoop]: Abstraction has 14951 states and 43077 transitions. [2022-01-18 01:10:30,036 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) [2022-01-18 01:10:30,036 INFO L276 IsEmpty]: Start isEmpty. Operand 14951 states and 43077 transitions. [2022-01-18 01:10:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:30,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:30,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:30,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-18 01:10:30,057 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:30,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:30,057 INFO L85 PathProgramCache]: Analyzing trace with hash -853564158, now seen corresponding path program 11 times [2022-01-18 01:10:30,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:30,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570243702] [2022-01-18 01:10:30,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:30,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:30,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:30,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570243702] [2022-01-18 01:10:30,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570243702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:30,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:30,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:10:30,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609170470] [2022-01-18 01:10:30,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:30,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:10:30,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:30,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:10:30,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:10:30,415 INFO L87 Difference]: Start difference. First operand 14951 states and 43077 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) [2022-01-18 01:10:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:31,013 INFO L93 Difference]: Finished difference Result 27371 states and 78805 transitions. [2022-01-18 01:10:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:10:31,013 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 [2022-01-18 01:10:31,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:31,065 INFO L225 Difference]: With dead ends: 27371 [2022-01-18 01:10:31,065 INFO L226 Difference]: Without dead ends: 27371 [2022-01-18 01:10:31,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=350, Invalid=1056, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:10:31,066 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 926 mSDsluCounter, 2364 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:31,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [926 Valid, 2670 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:10:31,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27371 states. [2022-01-18 01:10:31,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27371 to 14959. [2022-01-18 01:10:31,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14959 states, 14958 states have (on average 2.8813344029950527) internal successors, (43099), 14958 states have internal predecessors, (43099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:31,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14959 states to 14959 states and 43099 transitions. [2022-01-18 01:10:31,360 INFO L78 Accepts]: Start accepts. Automaton has 14959 states and 43099 transitions. Word has length 177 [2022-01-18 01:10:31,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:31,361 INFO L470 AbstractCegarLoop]: Abstraction has 14959 states and 43099 transitions. [2022-01-18 01:10:31,361 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) [2022-01-18 01:10:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 14959 states and 43099 transitions. [2022-01-18 01:10:31,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:31,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:31,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:31,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-18 01:10:31,382 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:31,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:31,383 INFO L85 PathProgramCache]: Analyzing trace with hash -652015268, now seen corresponding path program 11 times [2022-01-18 01:10:31,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:31,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731949593] [2022-01-18 01:10:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:31,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:31,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:31,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:31,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731949593] [2022-01-18 01:10:31,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731949593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:31,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:31,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:10:31,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240942722] [2022-01-18 01:10:31,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:31,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:10:31,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:31,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:10:31,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:10:31,760 INFO L87 Difference]: Start difference. First operand 14959 states and 43099 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) [2022-01-18 01:10:32,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:32,393 INFO L93 Difference]: Finished difference Result 27023 states and 77817 transitions. [2022-01-18 01:10:32,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:10:32,393 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 [2022-01-18 01:10:32,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:32,445 INFO L225 Difference]: With dead ends: 27023 [2022-01-18 01:10:32,445 INFO L226 Difference]: Without dead ends: 27023 [2022-01-18 01:10:32,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 01:10:32,446 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1114 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:32,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 2977 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:10:32,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27023 states. [2022-01-18 01:10:32,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27023 to 14951. [2022-01-18 01:10:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14951 states, 14950 states have (on average 2.8814046822742476) internal successors, (43077), 14950 states have internal predecessors, (43077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:32,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14951 states to 14951 states and 43077 transitions. [2022-01-18 01:10:32,810 INFO L78 Accepts]: Start accepts. Automaton has 14951 states and 43077 transitions. Word has length 177 [2022-01-18 01:10:32,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:32,810 INFO L470 AbstractCegarLoop]: Abstraction has 14951 states and 43077 transitions. [2022-01-18 01:10:32,810 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) [2022-01-18 01:10:32,810 INFO L276 IsEmpty]: Start isEmpty. Operand 14951 states and 43077 transitions. [2022-01-18 01:10:32,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:32,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:32,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:32,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-18 01:10:32,832 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:32,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:32,833 INFO L85 PathProgramCache]: Analyzing trace with hash -188440526, now seen corresponding path program 9 times [2022-01-18 01:10:32,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:32,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190327113] [2022-01-18 01:10:32,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:32,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:33,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:33,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:33,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190327113] [2022-01-18 01:10:33,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190327113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:33,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:33,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:10:33,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674117404] [2022-01-18 01:10:33,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:33,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:10:33,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:33,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:10:33,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:10:33,177 INFO L87 Difference]: Start difference. First operand 14951 states and 43077 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) [2022-01-18 01:10:33,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:33,801 INFO L93 Difference]: Finished difference Result 27135 states and 78141 transitions. [2022-01-18 01:10:33,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:10:33,801 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 [2022-01-18 01:10:33,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:33,853 INFO L225 Difference]: With dead ends: 27135 [2022-01-18 01:10:33,853 INFO L226 Difference]: Without dead ends: 27135 [2022-01-18 01:10:33,853 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 [2022-01-18 01:10:33,854 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1252 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2632 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:33,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1252 Valid, 2632 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:10:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27135 states. [2022-01-18 01:10:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27135 to 14927. [2022-01-18 01:10:34,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14927 states, 14926 states have (on average 2.880008039662334) internal successors, (42987), 14926 states have internal predecessors, (42987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:34,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14927 states to 14927 states and 42987 transitions. [2022-01-18 01:10:34,131 INFO L78 Accepts]: Start accepts. Automaton has 14927 states and 42987 transitions. Word has length 177 [2022-01-18 01:10:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:34,131 INFO L470 AbstractCegarLoop]: Abstraction has 14927 states and 42987 transitions. [2022-01-18 01:10:34,131 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) [2022-01-18 01:10:34,131 INFO L276 IsEmpty]: Start isEmpty. Operand 14927 states and 42987 transitions. [2022-01-18 01:10:34,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:34,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:34,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:34,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-18 01:10:34,152 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:34,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:34,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1002571828, now seen corresponding path program 11 times [2022-01-18 01:10:34,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:34,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364563940] [2022-01-18 01:10:34,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:34,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:34,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:34,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364563940] [2022-01-18 01:10:34,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364563940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:34,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:34,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:10:34,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122224605] [2022-01-18 01:10:34,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:34,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:10:34,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:34,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:10:34,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:10:34,524 INFO L87 Difference]: Start difference. First operand 14927 states and 42987 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) [2022-01-18 01:10:35,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:35,167 INFO L93 Difference]: Finished difference Result 27525 states and 79185 transitions. [2022-01-18 01:10:35,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:10:35,167 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 [2022-01-18 01:10:35,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:35,219 INFO L225 Difference]: With dead ends: 27525 [2022-01-18 01:10:35,219 INFO L226 Difference]: Without dead ends: 27525 [2022-01-18 01:10:35,219 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 [2022-01-18 01:10:35,219 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1056 mSDsluCounter, 3078 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:35,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 3367 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:10:35,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27525 states. [2022-01-18 01:10:35,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27525 to 14927. [2022-01-18 01:10:35,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14927 states, 14926 states have (on average 2.879472062173389) internal successors, (42979), 14926 states have internal predecessors, (42979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14927 states to 14927 states and 42979 transitions. [2022-01-18 01:10:35,497 INFO L78 Accepts]: Start accepts. Automaton has 14927 states and 42979 transitions. Word has length 177 [2022-01-18 01:10:35,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:35,498 INFO L470 AbstractCegarLoop]: Abstraction has 14927 states and 42979 transitions. [2022-01-18 01:10:35,498 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) [2022-01-18 01:10:35,498 INFO L276 IsEmpty]: Start isEmpty. Operand 14927 states and 42979 transitions. [2022-01-18 01:10:35,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:35,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:35,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:35,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-18 01:10:35,518 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:35,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:35,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1765481906, now seen corresponding path program 12 times [2022-01-18 01:10:35,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:35,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619499272] [2022-01-18 01:10:35,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:35,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:35,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:35,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619499272] [2022-01-18 01:10:35,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619499272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:35,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:35,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:10:35,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438328759] [2022-01-18 01:10:35,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:35,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:10:35,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:35,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:10:35,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:10:35,851 INFO L87 Difference]: Start difference. First operand 14927 states and 42979 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) [2022-01-18 01:10:36,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:36,470 INFO L93 Difference]: Finished difference Result 27219 states and 78307 transitions. [2022-01-18 01:10:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:10:36,470 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 [2022-01-18 01:10:36,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:36,522 INFO L225 Difference]: With dead ends: 27219 [2022-01-18 01:10:36,522 INFO L226 Difference]: Without dead ends: 27219 [2022-01-18 01:10:36,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:10:36,523 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 925 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:36,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [925 Valid, 3095 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:10:36,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27219 states. [2022-01-18 01:10:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27219 to 14943. [2022-01-18 01:10:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14943 states, 14942 states have (on average 2.87933342256726) internal successors, (43023), 14942 states have internal predecessors, (43023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:36,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14943 states to 14943 states and 43023 transitions. [2022-01-18 01:10:36,809 INFO L78 Accepts]: Start accepts. Automaton has 14943 states and 43023 transitions. Word has length 177 [2022-01-18 01:10:36,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:36,809 INFO L470 AbstractCegarLoop]: Abstraction has 14943 states and 43023 transitions. [2022-01-18 01:10:36,809 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) [2022-01-18 01:10:36,809 INFO L276 IsEmpty]: Start isEmpty. Operand 14943 states and 43023 transitions. [2022-01-18 01:10:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:36,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:36,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:36,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-18 01:10:36,830 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:36,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:36,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1967030796, now seen corresponding path program 12 times [2022-01-18 01:10:36,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:36,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313026869] [2022-01-18 01:10:36,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:36,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:37,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:37,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:37,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313026869] [2022-01-18 01:10:37,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313026869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:37,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:37,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:10:37,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845464023] [2022-01-18 01:10:37,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:37,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:10:37,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:37,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:10:37,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:10:37,167 INFO L87 Difference]: Start difference. First operand 14943 states and 43023 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) [2022-01-18 01:10:37,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:37,782 INFO L93 Difference]: Finished difference Result 26887 states and 77363 transitions. [2022-01-18 01:10:37,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:10:37,783 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 [2022-01-18 01:10:37,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:37,834 INFO L225 Difference]: With dead ends: 26887 [2022-01-18 01:10:37,834 INFO L226 Difference]: Without dead ends: 26887 [2022-01-18 01:10:37,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 01:10:37,835 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1151 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:37,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 2866 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:10:37,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26887 states. [2022-01-18 01:10:38,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26887 to 14943. [2022-01-18 01:10:38,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14943 states, 14942 states have (on average 2.87933342256726) internal successors, (43023), 14942 states have internal predecessors, (43023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:38,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14943 states to 14943 states and 43023 transitions. [2022-01-18 01:10:38,113 INFO L78 Accepts]: Start accepts. Automaton has 14943 states and 43023 transitions. Word has length 177 [2022-01-18 01:10:38,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:38,114 INFO L470 AbstractCegarLoop]: Abstraction has 14943 states and 43023 transitions. [2022-01-18 01:10:38,114 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) [2022-01-18 01:10:38,114 INFO L276 IsEmpty]: Start isEmpty. Operand 14943 states and 43023 transitions. [2022-01-18 01:10:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:38,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:38,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:38,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-18 01:10:38,134 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:38,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:38,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1864361758, now seen corresponding path program 10 times [2022-01-18 01:10:38,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:38,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879370298] [2022-01-18 01:10:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:38,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:38,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:38,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879370298] [2022-01-18 01:10:38,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879370298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:38,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:38,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:10:38,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590460903] [2022-01-18 01:10:38,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:38,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:10:38,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:38,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:10:38,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:10:38,488 INFO L87 Difference]: Start difference. First operand 14943 states and 43023 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) [2022-01-18 01:10:39,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:39,221 INFO L93 Difference]: Finished difference Result 27007 states and 77709 transitions. [2022-01-18 01:10:39,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:10:39,222 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 [2022-01-18 01:10:39,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:39,270 INFO L225 Difference]: With dead ends: 27007 [2022-01-18 01:10:39,271 INFO L226 Difference]: Without dead ends: 27007 [2022-01-18 01:10:39,271 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 [2022-01-18 01:10:39,271 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 846 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 3746 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:39,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 3746 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:10:39,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27007 states. [2022-01-18 01:10:39,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27007 to 14935. [2022-01-18 01:10:39,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14935 states, 14934 states have (on average 2.878331324494442) internal successors, (42985), 14934 states have internal predecessors, (42985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:39,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14935 states to 14935 states and 42985 transitions. [2022-01-18 01:10:39,544 INFO L78 Accepts]: Start accepts. Automaton has 14935 states and 42985 transitions. Word has length 177 [2022-01-18 01:10:39,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:39,544 INFO L470 AbstractCegarLoop]: Abstraction has 14935 states and 42985 transitions. [2022-01-18 01:10:39,544 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) [2022-01-18 01:10:39,545 INFO L276 IsEmpty]: Start isEmpty. Operand 14935 states and 42985 transitions. [2022-01-18 01:10:39,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:39,566 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:39,566 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:39,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-18 01:10:39,566 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:39,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:39,566 INFO L85 PathProgramCache]: Analyzing trace with hash 332351942, now seen corresponding path program 13 times [2022-01-18 01:10:39,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:39,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791231945] [2022-01-18 01:10:39,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:39,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:39,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:39,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:39,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791231945] [2022-01-18 01:10:39,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791231945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:39,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:39,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:10:39,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815382560] [2022-01-18 01:10:39,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:39,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:10:39,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:39,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:10:39,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:10:39,923 INFO L87 Difference]: Start difference. First operand 14935 states and 42985 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) [2022-01-18 01:10:40,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:40,669 INFO L93 Difference]: Finished difference Result 26727 states and 76779 transitions. [2022-01-18 01:10:40,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:10:40,670 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 [2022-01-18 01:10:40,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:40,721 INFO L225 Difference]: With dead ends: 26727 [2022-01-18 01:10:40,721 INFO L226 Difference]: Without dead ends: 26727 [2022-01-18 01:10:40,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 01:10:40,722 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1240 mSDsluCounter, 3791 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 4079 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:40,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1240 Valid, 4079 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:10:40,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26727 states. [2022-01-18 01:10:40,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26727 to 14887. [2022-01-18 01:10:40,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14887 states, 14886 states have (on average 2.877670294236195) internal successors, (42837), 14886 states have internal predecessors, (42837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14887 states to 14887 states and 42837 transitions. [2022-01-18 01:10:41,001 INFO L78 Accepts]: Start accepts. Automaton has 14887 states and 42837 transitions. Word has length 177 [2022-01-18 01:10:41,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:41,002 INFO L470 AbstractCegarLoop]: Abstraction has 14887 states and 42837 transitions. [2022-01-18 01:10:41,002 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) [2022-01-18 01:10:41,002 INFO L276 IsEmpty]: Start isEmpty. Operand 14887 states and 42837 transitions. [2022-01-18 01:10:41,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:41,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:41,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:41,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-18 01:10:41,022 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:41,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:41,022 INFO L85 PathProgramCache]: Analyzing trace with hash 627234334, now seen corresponding path program 11 times [2022-01-18 01:10:41,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:41,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100132500] [2022-01-18 01:10:41,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:41,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:41,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:41,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100132500] [2022-01-18 01:10:41,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100132500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:41,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:41,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:10:41,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838243779] [2022-01-18 01:10:41,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:41,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:10:41,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:41,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:10:41,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:10:41,340 INFO L87 Difference]: Start difference. First operand 14887 states and 42837 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) [2022-01-18 01:10:42,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:42,040 INFO L93 Difference]: Finished difference Result 26447 states and 75977 transitions. [2022-01-18 01:10:42,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:10:42,041 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 [2022-01-18 01:10:42,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:42,091 INFO L225 Difference]: With dead ends: 26447 [2022-01-18 01:10:42,091 INFO L226 Difference]: Without dead ends: 26447 [2022-01-18 01:10:42,091 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 [2022-01-18 01:10:42,091 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1195 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 3481 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:42,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1195 Valid, 3481 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:10:42,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26447 states. [2022-01-18 01:10:42,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26447 to 14903. [2022-01-18 01:10:42,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14903 states, 14902 states have (on average 2.87753321701785) internal successors, (42881), 14902 states have internal predecessors, (42881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:42,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14903 states to 14903 states and 42881 transitions. [2022-01-18 01:10:42,376 INFO L78 Accepts]: Start accepts. Automaton has 14903 states and 42881 transitions. Word has length 177 [2022-01-18 01:10:42,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:42,376 INFO L470 AbstractCegarLoop]: Abstraction has 14903 states and 42881 transitions. [2022-01-18 01:10:42,376 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) [2022-01-18 01:10:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 14903 states and 42881 transitions. [2022-01-18 01:10:42,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:42,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:42,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:42,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-18 01:10:42,397 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:42,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:42,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1467129088, now seen corresponding path program 12 times [2022-01-18 01:10:42,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:42,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488472923] [2022-01-18 01:10:42,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:42,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:42,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:42,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488472923] [2022-01-18 01:10:42,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488472923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:42,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:42,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:10:42,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226520923] [2022-01-18 01:10:42,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:42,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:10:42,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:42,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:10:42,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:10:42,752 INFO L87 Difference]: Start difference. First operand 14903 states and 42881 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) [2022-01-18 01:10:43,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:43,540 INFO L93 Difference]: Finished difference Result 27311 states and 78449 transitions. [2022-01-18 01:10:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:10:43,542 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 [2022-01-18 01:10:43,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:43,595 INFO L225 Difference]: With dead ends: 27311 [2022-01-18 01:10:43,595 INFO L226 Difference]: Without dead ends: 27311 [2022-01-18 01:10:43,596 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 [2022-01-18 01:10:43,596 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 1053 mSDsluCounter, 3274 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 3601 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:43,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 3601 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:10:43,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27311 states. [2022-01-18 01:10:43,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27311 to 14855. [2022-01-18 01:10:43,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14855 states, 14854 states have (on average 2.877406759122122) internal successors, (42741), 14854 states have internal predecessors, (42741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:43,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14855 states to 14855 states and 42741 transitions. [2022-01-18 01:10:43,879 INFO L78 Accepts]: Start accepts. Automaton has 14855 states and 42741 transitions. Word has length 177 [2022-01-18 01:10:43,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:43,879 INFO L470 AbstractCegarLoop]: Abstraction has 14855 states and 42741 transitions. [2022-01-18 01:10:43,879 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) [2022-01-18 01:10:43,880 INFO L276 IsEmpty]: Start isEmpty. Operand 14855 states and 42741 transitions. [2022-01-18 01:10:43,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:43,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:43,900 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] [2022-01-18 01:10:43,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-18 01:10:43,900 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:43,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:43,900 INFO L85 PathProgramCache]: Analyzing trace with hash -190982338, now seen corresponding path program 12 times [2022-01-18 01:10:43,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:43,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88262056] [2022-01-18 01:10:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:43,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:44,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:44,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88262056] [2022-01-18 01:10:44,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88262056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:44,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:44,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:10:44,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136385577] [2022-01-18 01:10:44,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:44,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:10:44,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:44,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:10:44,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:10:44,170 INFO L87 Difference]: Start difference. First operand 14855 states and 42741 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) [2022-01-18 01:10:44,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:44,791 INFO L93 Difference]: Finished difference Result 30372 states and 87401 transitions. [2022-01-18 01:10:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:10:44,791 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 [2022-01-18 01:10:44,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:44,853 INFO L225 Difference]: With dead ends: 30372 [2022-01-18 01:10:44,853 INFO L226 Difference]: Without dead ends: 30372 [2022-01-18 01:10:44,854 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 [2022-01-18 01:10:44,854 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1140 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:44,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 3595 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:10:44,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30372 states. [2022-01-18 01:10:45,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30372 to 15367. [2022-01-18 01:10:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15367 states, 15366 states have (on average 2.8738123128986075) internal successors, (44159), 15366 states have internal predecessors, (44159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:45,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15367 states to 15367 states and 44159 transitions. [2022-01-18 01:10:45,181 INFO L78 Accepts]: Start accepts. Automaton has 15367 states and 44159 transitions. Word has length 177 [2022-01-18 01:10:45,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:45,181 INFO L470 AbstractCegarLoop]: Abstraction has 15367 states and 44159 transitions. [2022-01-18 01:10:45,181 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) [2022-01-18 01:10:45,181 INFO L276 IsEmpty]: Start isEmpty. Operand 15367 states and 44159 transitions. [2022-01-18 01:10:45,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:45,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:45,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:45,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-18 01:10:45,203 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:45,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:45,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1068165586, now seen corresponding path program 14 times [2022-01-18 01:10:45,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:45,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679029793] [2022-01-18 01:10:45,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:45,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:45,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:45,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:45,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679029793] [2022-01-18 01:10:45,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679029793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:45,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:45,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:10:45,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283256895] [2022-01-18 01:10:45,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:45,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:10:45,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:45,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:10:45,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:10:45,567 INFO L87 Difference]: Start difference. First operand 15367 states and 44159 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) [2022-01-18 01:10:46,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:46,164 INFO L93 Difference]: Finished difference Result 24484 states and 70594 transitions. [2022-01-18 01:10:46,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:10:46,164 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 [2022-01-18 01:10:46,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:46,208 INFO L225 Difference]: With dead ends: 24484 [2022-01-18 01:10:46,208 INFO L226 Difference]: Without dead ends: 24484 [2022-01-18 01:10:46,208 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 [2022-01-18 01:10:46,209 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 1063 mSDsluCounter, 2947 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 3263 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:46,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1063 Valid, 3263 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:10:46,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24484 states. [2022-01-18 01:10:46,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24484 to 15567. [2022-01-18 01:10:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15567 states, 15566 states have (on average 2.871836052935886) internal successors, (44703), 15566 states have internal predecessors, (44703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15567 states to 15567 states and 44703 transitions. [2022-01-18 01:10:46,478 INFO L78 Accepts]: Start accepts. Automaton has 15567 states and 44703 transitions. Word has length 177 [2022-01-18 01:10:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:46,478 INFO L470 AbstractCegarLoop]: Abstraction has 15567 states and 44703 transitions. [2022-01-18 01:10:46,478 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) [2022-01-18 01:10:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 15567 states and 44703 transitions. [2022-01-18 01:10:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:46,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:46,499 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] [2022-01-18 01:10:46,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-18 01:10:46,499 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:46,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:46,499 INFO L85 PathProgramCache]: Analyzing trace with hash 264718334, now seen corresponding path program 15 times [2022-01-18 01:10:46,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:46,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683252365] [2022-01-18 01:10:46,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:46,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:46,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:46,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683252365] [2022-01-18 01:10:46,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683252365] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:10:46,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309450811] [2022-01-18 01:10:46,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:10:46,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:10:46,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:10:46,788 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) [2022-01-18 01:10:46,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 01:10:46,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 01:10:46,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:10:46,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-01-18 01:10:46,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:10:46,940 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 [2022-01-18 01:10:46,957 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 01:10:46,957 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 [2022-01-18 01:10:47,074 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-01-18 01:10:47,074 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 [2022-01-18 01:10:47,180 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 [2022-01-18 01:10:47,476 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-01-18 01:10:47,476 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 [2022-01-18 01:10:47,577 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 [2022-01-18 01:10:47,703 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 [2022-01-18 01:10:47,777 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 [2022-01-18 01:10:48,185 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-01-18 01:10:48,186 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 [2022-01-18 01:10:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:10:48,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:10:48,675 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_1463 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1463))) (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 [2022-01-18 01:10:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-01-18 01:10:48,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309450811] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:10:48,810 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:10:48,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 12] total 56 [2022-01-18 01:10:48,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725594253] [2022-01-18 01:10:48,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:10:48,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-18 01:10:48,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-18 01:10:48,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=2738, Unknown=1, NotChecked=106, Total=3080 [2022-01-18 01:10:48,812 INFO L87 Difference]: Start difference. First operand 15567 states and 44703 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) [2022-01-18 01:10:52,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:52,960 INFO L93 Difference]: Finished difference Result 36770 states and 106219 transitions. [2022-01-18 01:10:52,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 01:10:52,961 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 [2022-01-18 01:10:52,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:53,033 INFO L225 Difference]: With dead ends: 36770 [2022-01-18 01:10:53,033 INFO L226 Difference]: Without dead ends: 36770 [2022-01-18 01:10:53,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 347 SyntacticMatches, 6 SemanticMatches, 107 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2909 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1955, Invalid=9604, Unknown=1, NotChecked=212, Total=11772 [2022-01-18 01:10:53,035 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 3511 mSDsluCounter, 12804 mSDsCounter, 0 mSdLazyCounter, 3333 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 13108 SdHoareTripleChecker+Invalid, 4624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1258 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:53,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3511 Valid, 13108 Invalid, 4624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3333 Invalid, 0 Unknown, 1258 Unchecked, 1.3s Time] [2022-01-18 01:10:53,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36770 states. [2022-01-18 01:10:53,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36770 to 18369. [2022-01-18 01:10:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18369 states, 18368 states have (on average 2.8788654181184667) internal successors, (52879), 18368 states have internal predecessors, (52879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:53,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18369 states to 18369 states and 52879 transitions. [2022-01-18 01:10:53,420 INFO L78 Accepts]: Start accepts. Automaton has 18369 states and 52879 transitions. Word has length 177 [2022-01-18 01:10:53,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:53,420 INFO L470 AbstractCegarLoop]: Abstraction has 18369 states and 52879 transitions. [2022-01-18 01:10:53,420 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) [2022-01-18 01:10:53,420 INFO L276 IsEmpty]: Start isEmpty. Operand 18369 states and 52879 transitions. [2022-01-18 01:10:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:53,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:53,448 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, 1, 1, 1, 1] [2022-01-18 01:10:53,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-01-18 01:10:53,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:10:53,648 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:53,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:53,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1286427318, now seen corresponding path program 13 times [2022-01-18 01:10:53,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:53,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118796603] [2022-01-18 01:10:53,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:53,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:53,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:53,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118796603] [2022-01-18 01:10:53,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118796603] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:10:53,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114599583] [2022-01-18 01:10:53,973 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:10:53,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:10:53,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:10:53,974 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) [2022-01-18 01:10:53,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 01:10:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:54,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-18 01:10:54,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:10:54,137 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 [2022-01-18 01:10:54,285 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 01:10:54,286 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 [2022-01-18 01:10:54,394 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2022-01-18 01:10:54,651 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 01:10:54,652 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 [2022-01-18 01:10:54,745 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 [2022-01-18 01:10:54,885 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 [2022-01-18 01:10:54,964 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 [2022-01-18 01:10:55,223 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-18 01:10:55,225 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 [2022-01-18 01:10:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:10:55,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:10:55,617 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1502 (Array Int Int)) (~get2~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1502))) (let ((.cse0 (select .cse3 c_~get1~0.base)) (.cse1 (select .cse3 ~get2~0.base))) (or (= (select .cse0 c_~get1~0.offset) (select .cse1 c_~get2~0.offset)) (not (let ((.cse2 (* c_thread1Thread1of1ForFork0_~i~0 4))) (= (select .cse0 (+ c_~get1~0.offset .cse2)) (select .cse1 (+ c_~get2~0.offset .cse2))))))))) is different from false [2022-01-18 01:10:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-01-18 01:10:55,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114599583] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:10:55,722 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:10:55,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-01-18 01:10:55,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407945379] [2022-01-18 01:10:55,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:10:55,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 01:10:55,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:55,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 01:10:55,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2171, Unknown=1, NotChecked=94, Total=2450 [2022-01-18 01:10:55,723 INFO L87 Difference]: Start difference. First operand 18369 states and 52879 transitions. Second operand has 50 states, 50 states have (on average 7.74) internal successors, (387), 50 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:58,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:10:58,746 INFO L93 Difference]: Finished difference Result 33262 states and 96073 transitions. [2022-01-18 01:10:58,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 01:10:58,746 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.74) internal successors, (387), 50 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have 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 [2022-01-18 01:10:58,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:10:58,811 INFO L225 Difference]: With dead ends: 33262 [2022-01-18 01:10:58,811 INFO L226 Difference]: Without dead ends: 33262 [2022-01-18 01:10:58,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 337 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1736 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1600, Invalid=6959, Unknown=1, NotChecked=182, Total=8742 [2022-01-18 01:10:58,812 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 3753 mSDsluCounter, 8833 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3753 SdHoareTripleChecker+Valid, 9066 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1024 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 01:10:58,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3753 Valid, 9066 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2279 Invalid, 0 Unknown, 1024 Unchecked, 0.9s Time] [2022-01-18 01:10:58,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33262 states. [2022-01-18 01:10:59,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33262 to 16113. [2022-01-18 01:10:59,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16113 states, 16112 states have (on average 2.871089870903674) internal successors, (46259), 16112 states have internal predecessors, (46259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:59,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16113 states to 16113 states and 46259 transitions. [2022-01-18 01:10:59,148 INFO L78 Accepts]: Start accepts. Automaton has 16113 states and 46259 transitions. Word has length 177 [2022-01-18 01:10:59,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:10:59,149 INFO L470 AbstractCegarLoop]: Abstraction has 16113 states and 46259 transitions. [2022-01-18 01:10:59,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.74) internal successors, (387), 50 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:10:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 16113 states and 46259 transitions. [2022-01-18 01:10:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:10:59,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:10:59,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:10:59,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 01:10:59,371 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 [2022-01-18 01:10:59,372 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:10:59,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:10:59,372 INFO L85 PathProgramCache]: Analyzing trace with hash -219886214, now seen corresponding path program 13 times [2022-01-18 01:10:59,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:10:59,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978592102] [2022-01-18 01:10:59,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:10:59,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:10:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:10:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:10:59,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:10:59,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978592102] [2022-01-18 01:10:59,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978592102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:10:59,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:10:59,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:10:59,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878692770] [2022-01-18 01:10:59,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:10:59,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:10:59,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:10:59,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:10:59,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:10:59,727 INFO L87 Difference]: Start difference. First operand 16113 states and 46259 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) [2022-01-18 01:11:00,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:00,541 INFO L93 Difference]: Finished difference Result 28881 states and 83235 transitions. [2022-01-18 01:11:00,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 01:11:00,541 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 [2022-01-18 01:11:00,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:00,597 INFO L225 Difference]: With dead ends: 28881 [2022-01-18 01:11:00,597 INFO L226 Difference]: Without dead ends: 28881 [2022-01-18 01:11:00,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 01:11:00,598 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 1149 mSDsluCounter, 3991 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 4316 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:00,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 4316 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:11:00,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28881 states. [2022-01-18 01:11:00,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28881 to 16129. [2022-01-18 01:11:00,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16129 states, 16128 states have (on average 2.8719618055555554) internal successors, (46319), 16128 states have internal predecessors, (46319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16129 states to 16129 states and 46319 transitions. [2022-01-18 01:11:00,932 INFO L78 Accepts]: Start accepts. Automaton has 16129 states and 46319 transitions. Word has length 177 [2022-01-18 01:11:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:00,932 INFO L470 AbstractCegarLoop]: Abstraction has 16129 states and 46319 transitions. [2022-01-18 01:11:00,932 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) [2022-01-18 01:11:00,932 INFO L276 IsEmpty]: Start isEmpty. Operand 16129 states and 46319 transitions. [2022-01-18 01:11:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:00,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:00,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:00,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-18 01:11:00,956 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:00,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:00,956 INFO L85 PathProgramCache]: Analyzing trace with hash 652336600, now seen corresponding path program 14 times [2022-01-18 01:11:00,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:00,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81065361] [2022-01-18 01:11:00,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:00,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:01,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:01,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81065361] [2022-01-18 01:11:01,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81065361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:01,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:01,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:11:01,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550902414] [2022-01-18 01:11:01,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:01,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:11:01,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:01,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:11:01,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:11:01,367 INFO L87 Difference]: Start difference. First operand 16129 states and 46319 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) [2022-01-18 01:11:02,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:02,018 INFO L93 Difference]: Finished difference Result 25646 states and 74148 transitions. [2022-01-18 01:11:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:11:02,018 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 [2022-01-18 01:11:02,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:02,067 INFO L225 Difference]: With dead ends: 25646 [2022-01-18 01:11:02,067 INFO L226 Difference]: Without dead ends: 25646 [2022-01-18 01:11:02,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=338, Invalid=1144, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 01:11:02,068 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 974 mSDsluCounter, 2654 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:02,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 2975 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:11:02,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25646 states. [2022-01-18 01:11:02,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25646 to 16137. [2022-01-18 01:11:02,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16137 states, 16136 states have (on average 2.872397124442241) internal successors, (46349), 16136 states have internal predecessors, (46349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16137 states to 16137 states and 46349 transitions. [2022-01-18 01:11:02,359 INFO L78 Accepts]: Start accepts. Automaton has 16137 states and 46349 transitions. Word has length 177 [2022-01-18 01:11:02,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:02,359 INFO L470 AbstractCegarLoop]: Abstraction has 16137 states and 46349 transitions. [2022-01-18 01:11:02,359 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) [2022-01-18 01:11:02,360 INFO L276 IsEmpty]: Start isEmpty. Operand 16137 states and 46349 transitions. [2022-01-18 01:11:02,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:02,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:02,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:02,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-18 01:11:02,382 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:02,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1447008256, now seen corresponding path program 16 times [2022-01-18 01:11:02,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:02,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468366819] [2022-01-18 01:11:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:02,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:02,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:02,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468366819] [2022-01-18 01:11:02,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468366819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:02,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:02,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:11:02,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674913197] [2022-01-18 01:11:02,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:02,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:11:02,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:02,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:11:02,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:11:02,725 INFO L87 Difference]: Start difference. First operand 16137 states and 46349 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) [2022-01-18 01:11:03,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:03,378 INFO L93 Difference]: Finished difference Result 25316 states and 73130 transitions. [2022-01-18 01:11:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:11:03,379 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 [2022-01-18 01:11:03,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:03,428 INFO L225 Difference]: With dead ends: 25316 [2022-01-18 01:11:03,428 INFO L226 Difference]: Without dead ends: 25316 [2022-01-18 01:11:03,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:11:03,429 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 928 mSDsluCounter, 2979 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:03,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 3283 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:11:03,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25316 states. [2022-01-18 01:11:03,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25316 to 16169. [2022-01-18 01:11:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16169 states, 16168 states have (on average 2.8721548738248392) internal successors, (46437), 16168 states have internal predecessors, (46437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:03,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16169 states to 16169 states and 46437 transitions. [2022-01-18 01:11:03,714 INFO L78 Accepts]: Start accepts. Automaton has 16169 states and 46437 transitions. Word has length 177 [2022-01-18 01:11:03,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:03,714 INFO L470 AbstractCegarLoop]: Abstraction has 16169 states and 46437 transitions. [2022-01-18 01:11:03,714 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) [2022-01-18 01:11:03,715 INFO L276 IsEmpty]: Start isEmpty. Operand 16169 states and 46437 transitions. [2022-01-18 01:11:03,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:03,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:03,736 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] [2022-01-18 01:11:03,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-18 01:11:03,737 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:03,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:03,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1040334356, now seen corresponding path program 17 times [2022-01-18 01:11:03,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:03,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822036377] [2022-01-18 01:11:03,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:03,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:04,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:04,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822036377] [2022-01-18 01:11:04,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822036377] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:11:04,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593666529] [2022-01-18 01:11:04,125 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:11:04,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:11:04,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:11:04,126 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) [2022-01-18 01:11:04,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 01:11:04,246 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:11:04,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:11:04,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-18 01:11:04,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:11:04,719 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 [2022-01-18 01:11:04,928 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 [2022-01-18 01:11:05,028 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 [2022-01-18 01:11:05,507 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:11:05,507 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 [2022-01-18 01:11:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:11:05,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:11:05,952 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_1586 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1586))) (let ((.cse2 (select .cse3 ~get1~0.base)) (.cse0 (select .cse3 c_~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 [2022-01-18 01:11:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-01-18 01:11:06,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593666529] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:11:06,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:11:06,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 13] total 55 [2022-01-18 01:11:06,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790289036] [2022-01-18 01:11:06,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:11:06,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-18 01:11:06,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:06,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-18 01:11:06,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=2599, Unknown=1, NotChecked=104, Total=2970 [2022-01-18 01:11:06,069 INFO L87 Difference]: Start difference. First operand 16169 states and 46437 transitions. Second operand has 55 states, 55 states have (on average 7.163636363636364) internal successors, (394), 55 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:15,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:15,825 INFO L93 Difference]: Finished difference Result 64991 states and 188249 transitions. [2022-01-18 01:11:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-18 01:11:15,826 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 7.163636363636364) internal successors, (394), 55 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have 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 [2022-01-18 01:11:15,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:15,978 INFO L225 Difference]: With dead ends: 64991 [2022-01-18 01:11:15,978 INFO L226 Difference]: Without dead ends: 64991 [2022-01-18 01:11:15,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 341 SyntacticMatches, 12 SemanticMatches, 189 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12180 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=6742, Invalid=29171, Unknown=1, NotChecked=376, Total=36290 [2022-01-18 01:11:15,982 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 4317 mSDsluCounter, 12576 mSDsCounter, 0 mSdLazyCounter, 3846 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4317 SdHoareTripleChecker+Valid, 13034 SdHoareTripleChecker+Invalid, 4877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 968 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:15,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4317 Valid, 13034 Invalid, 4877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3846 Invalid, 0 Unknown, 968 Unchecked, 1.7s Time] [2022-01-18 01:11:16,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64991 states. [2022-01-18 01:11:16,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64991 to 18365. [2022-01-18 01:11:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18365 states, 18364 states have (on average 2.885155739490307) internal successors, (52983), 18364 states have internal predecessors, (52983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:16,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18365 states to 18365 states and 52983 transitions. [2022-01-18 01:11:16,606 INFO L78 Accepts]: Start accepts. Automaton has 18365 states and 52983 transitions. Word has length 177 [2022-01-18 01:11:16,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:16,606 INFO L470 AbstractCegarLoop]: Abstraction has 18365 states and 52983 transitions. [2022-01-18 01:11:16,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 7.163636363636364) internal successors, (394), 55 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:16,606 INFO L276 IsEmpty]: Start isEmpty. Operand 18365 states and 52983 transitions. [2022-01-18 01:11:16,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:16,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:16,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:16,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 01:11:16,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-01-18 01:11:16,834 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:16,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:16,834 INFO L85 PathProgramCache]: Analyzing trace with hash -18625372, now seen corresponding path program 14 times [2022-01-18 01:11:16,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:16,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830218544] [2022-01-18 01:11:16,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:16,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:17,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:17,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830218544] [2022-01-18 01:11:17,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830218544] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:11:17,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689672390] [2022-01-18 01:11:17,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:11:17,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:11:17,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:11:17,238 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) [2022-01-18 01:11:17,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 01:11:17,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:11:17,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:11:17,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-18 01:11:17,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:11:17,796 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-18 01:11:17,797 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 [2022-01-18 01:11:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:17,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:11:18,020 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-01-18 01:11:18,021 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 [2022-01-18 01:11:18,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:18,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689672390] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:11:18,153 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:11:18,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 31 [2022-01-18 01:11:18,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229041315] [2022-01-18 01:11:18,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:11:18,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 01:11:18,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:18,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 01:11:18,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2022-01-18 01:11:18,154 INFO L87 Difference]: Start difference. First operand 18365 states and 52983 transitions. Second operand has 31 states, 31 states have (on average 9.193548387096774) internal successors, (285), 31 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:20,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:20,024 INFO L93 Difference]: Finished difference Result 31674 states and 91522 transitions. [2022-01-18 01:11:20,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 01:11:20,025 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 9.193548387096774) internal successors, (285), 31 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have 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 [2022-01-18 01:11:20,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:20,086 INFO L225 Difference]: With dead ends: 31674 [2022-01-18 01:11:20,086 INFO L226 Difference]: Without dead ends: 31674 [2022-01-18 01:11:20,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1292 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1123, Invalid=4577, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 01:11:20,087 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 1552 mSDsluCounter, 7698 mSDsCounter, 0 mSdLazyCounter, 2083 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 8020 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 671 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:20,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1552 Valid, 8020 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2083 Invalid, 0 Unknown, 671 Unchecked, 0.8s Time] [2022-01-18 01:11:20,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31674 states. [2022-01-18 01:11:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31674 to 18171. [2022-01-18 01:11:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18171 states, 18170 states have (on average 2.8839295542102366) internal successors, (52401), 18170 states have internal predecessors, (52401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:20,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18171 states to 18171 states and 52401 transitions. [2022-01-18 01:11:20,472 INFO L78 Accepts]: Start accepts. Automaton has 18171 states and 52401 transitions. Word has length 177 [2022-01-18 01:11:20,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:20,472 INFO L470 AbstractCegarLoop]: Abstraction has 18171 states and 52401 transitions. [2022-01-18 01:11:20,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 9.193548387096774) internal successors, (285), 31 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 18171 states and 52401 transitions. [2022-01-18 01:11:20,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:20,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:20,499 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] [2022-01-18 01:11:20,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 01:11:20,699 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 [2022-01-18 01:11:20,700 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:20,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:20,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1804088130, now seen corresponding path program 15 times [2022-01-18 01:11:20,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:20,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529895779] [2022-01-18 01:11:20,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:20,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:21,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:21,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:21,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529895779] [2022-01-18 01:11:21,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529895779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:21,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:21,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:11:21,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751878060] [2022-01-18 01:11:21,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:21,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:11:21,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:11:21,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:11:21,101 INFO L87 Difference]: Start difference. First operand 18171 states and 52401 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) [2022-01-18 01:11:21,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:21,767 INFO L93 Difference]: Finished difference Result 27524 states and 79534 transitions. [2022-01-18 01:11:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 01:11:21,768 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 [2022-01-18 01:11:21,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:21,820 INFO L225 Difference]: With dead ends: 27524 [2022-01-18 01:11:21,820 INFO L226 Difference]: Without dead ends: 27524 [2022-01-18 01:11:21,821 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 [2022-01-18 01:11:21,821 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 779 mSDsluCounter, 2976 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 3281 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:21,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 3281 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:11:21,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27524 states. [2022-01-18 01:11:22,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27524 to 18175. [2022-01-18 01:11:22,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18175 states, 18174 states have (on average 2.883514911411907) internal successors, (52405), 18174 states have internal predecessors, (52405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:22,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18175 states to 18175 states and 52405 transitions. [2022-01-18 01:11:22,137 INFO L78 Accepts]: Start accepts. Automaton has 18175 states and 52405 transitions. Word has length 177 [2022-01-18 01:11:22,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:22,137 INFO L470 AbstractCegarLoop]: Abstraction has 18175 states and 52405 transitions. [2022-01-18 01:11:22,137 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) [2022-01-18 01:11:22,138 INFO L276 IsEmpty]: Start isEmpty. Operand 18175 states and 52405 transitions. [2022-01-18 01:11:22,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:22,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:22,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:22,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-18 01:11:22,162 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:22,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:22,162 INFO L85 PathProgramCache]: Analyzing trace with hash 963965604, now seen corresponding path program 15 times [2022-01-18 01:11:22,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:22,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992802528] [2022-01-18 01:11:22,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:22,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:22,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:22,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992802528] [2022-01-18 01:11:22,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992802528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:22,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:22,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:11:22,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536748354] [2022-01-18 01:11:22,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:22,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:11:22,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:22,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:11:22,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:11:22,545 INFO L87 Difference]: Start difference. First operand 18175 states and 52405 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) [2022-01-18 01:11:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:23,193 INFO L93 Difference]: Finished difference Result 27364 states and 79104 transitions. [2022-01-18 01:11:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 01:11:23,193 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 [2022-01-18 01:11:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:23,247 INFO L225 Difference]: With dead ends: 27364 [2022-01-18 01:11:23,247 INFO L226 Difference]: Without dead ends: 27364 [2022-01-18 01:11:23,247 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 [2022-01-18 01:11:23,248 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 915 mSDsluCounter, 3466 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 3755 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:23,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 3755 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:11:23,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27364 states. [2022-01-18 01:11:23,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27364 to 18183. [2022-01-18 01:11:23,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18183 states, 18182 states have (on average 2.8834561654383455) internal successors, (52427), 18182 states have internal predecessors, (52427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:23,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18183 states to 18183 states and 52427 transitions. [2022-01-18 01:11:23,573 INFO L78 Accepts]: Start accepts. Automaton has 18183 states and 52427 transitions. Word has length 177 [2022-01-18 01:11:23,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:23,573 INFO L470 AbstractCegarLoop]: Abstraction has 18183 states and 52427 transitions. [2022-01-18 01:11:23,573 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) [2022-01-18 01:11:23,573 INFO L276 IsEmpty]: Start isEmpty. Operand 18183 states and 52427 transitions. [2022-01-18 01:11:23,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:23,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:23,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:23,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-18 01:11:23,600 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:23,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:23,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1165514494, now seen corresponding path program 18 times [2022-01-18 01:11:23,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:23,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590576839] [2022-01-18 01:11:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:23,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:24,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:24,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590576839] [2022-01-18 01:11:24,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590576839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:24,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:24,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:11:24,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920018862] [2022-01-18 01:11:24,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:24,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:11:24,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:24,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:11:24,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:11:24,048 INFO L87 Difference]: Start difference. First operand 18183 states and 52427 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) [2022-01-18 01:11:24,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:24,735 INFO L93 Difference]: Finished difference Result 26978 states and 77922 transitions. [2022-01-18 01:11:24,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:11:24,735 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 [2022-01-18 01:11:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:24,786 INFO L225 Difference]: With dead ends: 26978 [2022-01-18 01:11:24,786 INFO L226 Difference]: Without dead ends: 26978 [2022-01-18 01:11:24,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=352, Invalid=1130, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 01:11:24,787 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 1170 mSDsluCounter, 2452 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:24,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 2750 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:11:24,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26978 states. [2022-01-18 01:11:25,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26978 to 18153. [2022-01-18 01:11:25,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18153 states, 18152 states have (on average 2.88271264874394) internal successors, (52327), 18152 states have internal predecessors, (52327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:25,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18153 states to 18153 states and 52327 transitions. [2022-01-18 01:11:25,227 INFO L78 Accepts]: Start accepts. Automaton has 18153 states and 52327 transitions. Word has length 177 [2022-01-18 01:11:25,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:25,227 INFO L470 AbstractCegarLoop]: Abstraction has 18153 states and 52327 transitions. [2022-01-18 01:11:25,227 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) [2022-01-18 01:11:25,228 INFO L276 IsEmpty]: Start isEmpty. Operand 18153 states and 52327 transitions. [2022-01-18 01:11:25,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:25,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:25,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:25,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-18 01:11:25,253 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:25,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:25,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1629089236, now seen corresponding path program 13 times [2022-01-18 01:11:25,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:25,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689177966] [2022-01-18 01:11:25,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:25,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:25,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:25,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:25,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689177966] [2022-01-18 01:11:25,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689177966] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:25,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:25,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:11:25,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099238469] [2022-01-18 01:11:25,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:25,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:11:25,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:25,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:11:25,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:11:25,648 INFO L87 Difference]: Start difference. First operand 18153 states and 52327 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) [2022-01-18 01:11:26,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:26,412 INFO L93 Difference]: Finished difference Result 27020 states and 78036 transitions. [2022-01-18 01:11:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:11:26,413 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 [2022-01-18 01:11:26,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:26,467 INFO L225 Difference]: With dead ends: 27020 [2022-01-18 01:11:26,468 INFO L226 Difference]: Without dead ends: 27020 [2022-01-18 01:11:26,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:11:26,468 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 1169 mSDsluCounter, 3412 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:26,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1169 Valid, 3733 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:11:26,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27020 states. [2022-01-18 01:11:26,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27020 to 18169. [2022-01-18 01:11:26,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18169 states, 18168 states have (on average 2.8809445178335533) internal successors, (52341), 18168 states have internal predecessors, (52341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:26,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18169 states to 18169 states and 52341 transitions. [2022-01-18 01:11:26,780 INFO L78 Accepts]: Start accepts. Automaton has 18169 states and 52341 transitions. Word has length 177 [2022-01-18 01:11:26,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:26,781 INFO L470 AbstractCegarLoop]: Abstraction has 18169 states and 52341 transitions. [2022-01-18 01:11:26,781 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) [2022-01-18 01:11:26,781 INFO L276 IsEmpty]: Start isEmpty. Operand 18169 states and 52341 transitions. [2022-01-18 01:11:26,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:26,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:26,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:26,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-18 01:11:26,805 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:26,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1137635360, now seen corresponding path program 16 times [2022-01-18 01:11:26,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:26,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547366369] [2022-01-18 01:11:26,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:26,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:27,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:27,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547366369] [2022-01-18 01:11:27,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547366369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:27,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:27,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:11:27,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391077794] [2022-01-18 01:11:27,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:27,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:11:27,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:27,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:11:27,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:11:27,184 INFO L87 Difference]: Start difference. First operand 18169 states and 52341 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) [2022-01-18 01:11:27,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:27,904 INFO L93 Difference]: Finished difference Result 27260 states and 78614 transitions. [2022-01-18 01:11:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 01:11:27,905 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 [2022-01-18 01:11:27,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:27,956 INFO L225 Difference]: With dead ends: 27260 [2022-01-18 01:11:27,956 INFO L226 Difference]: Without dead ends: 27260 [2022-01-18 01:11:27,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=397, Invalid=1243, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 01:11:27,957 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 1135 mSDsluCounter, 3174 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 3484 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:27,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1135 Valid, 3484 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:11:27,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27260 states. [2022-01-18 01:11:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27260 to 18249. [2022-01-18 01:11:28,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18249 states, 18248 states have (on average 2.8797128452433145) internal successors, (52549), 18248 states have internal predecessors, (52549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18249 states to 18249 states and 52549 transitions. [2022-01-18 01:11:28,268 INFO L78 Accepts]: Start accepts. Automaton has 18249 states and 52549 transitions. Word has length 177 [2022-01-18 01:11:28,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:28,268 INFO L470 AbstractCegarLoop]: Abstraction has 18249 states and 52549 transitions. [2022-01-18 01:11:28,268 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) [2022-01-18 01:11:28,268 INFO L276 IsEmpty]: Start isEmpty. Operand 18249 states and 52549 transitions. [2022-01-18 01:11:28,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:28,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:28,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:28,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-18 01:11:28,293 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:28,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:28,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1914461684, now seen corresponding path program 17 times [2022-01-18 01:11:28,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:28,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785567422] [2022-01-18 01:11:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:28,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:28,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:28,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785567422] [2022-01-18 01:11:28,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785567422] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:11:28,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265190353] [2022-01-18 01:11:28,589 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:11:28,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:11:28,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:11:28,590 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) [2022-01-18 01:11:28,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 01:11:28,717 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:11:28,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:11:28,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-18 01:11:28,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:11:29,213 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 [2022-01-18 01:11:29,364 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 [2022-01-18 01:11:29,465 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 6 treesize of output 5 [2022-01-18 01:11:29,686 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-18 01:11:29,686 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 [2022-01-18 01:11:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:11:29,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:11:29,972 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1734 (Array Int Int)) (~get1~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1734))) (let ((.cse2 (select .cse3 ~get1~0.base)) (.cse0 (select .cse3 c_~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 [2022-01-18 01:11:30,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-01-18 01:11:30,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265190353] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:11:30,079 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:11:30,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 47 [2022-01-18 01:11:30,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910672889] [2022-01-18 01:11:30,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:11:30,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 01:11:30,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:30,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 01:11:30,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1866, Unknown=1, NotChecked=88, Total=2162 [2022-01-18 01:11:30,081 INFO L87 Difference]: Start difference. First operand 18249 states and 52549 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) [2022-01-18 01:11:33,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:33,375 INFO L93 Difference]: Finished difference Result 42267 states and 121479 transitions. [2022-01-18 01:11:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 01:11:33,375 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 [2022-01-18 01:11:33,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:33,461 INFO L225 Difference]: With dead ends: 42267 [2022-01-18 01:11:33,461 INFO L226 Difference]: Without dead ends: 42267 [2022-01-18 01:11:33,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 338 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2498 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2104, Invalid=7999, Unknown=1, NotChecked=198, Total=10302 [2022-01-18 01:11:33,463 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 2525 mSDsluCounter, 8140 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 8388 SdHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 628 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:33,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2525 Valid, 8388 Invalid, 3230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2558 Invalid, 0 Unknown, 628 Unchecked, 1.0s Time] [2022-01-18 01:11:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42267 states. [2022-01-18 01:11:33,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42267 to 16113. [2022-01-18 01:11:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16113 states, 16112 states have (on average 2.871089870903674) internal successors, (46259), 16112 states have internal predecessors, (46259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:34,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16113 states to 16113 states and 46259 transitions. [2022-01-18 01:11:34,011 INFO L78 Accepts]: Start accepts. Automaton has 16113 states and 46259 transitions. Word has length 177 [2022-01-18 01:11:34,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:34,011 INFO L470 AbstractCegarLoop]: Abstraction has 16113 states and 46259 transitions. [2022-01-18 01:11:34,011 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) [2022-01-18 01:11:34,011 INFO L276 IsEmpty]: Start isEmpty. Operand 16113 states and 46259 transitions. [2022-01-18 01:11:34,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:34,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:34,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:34,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 01:11:34,233 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 [2022-01-18 01:11:34,234 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:34,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:34,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1914474352, now seen corresponding path program 16 times [2022-01-18 01:11:34,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:34,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210374702] [2022-01-18 01:11:34,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:34,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:34,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:34,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210374702] [2022-01-18 01:11:34,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210374702] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:34,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:34,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:11:34,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846665953] [2022-01-18 01:11:34,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:34,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:11:34,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:34,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:11:34,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:11:34,576 INFO L87 Difference]: Start difference. First operand 16113 states and 46259 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) [2022-01-18 01:11:35,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:35,308 INFO L93 Difference]: Finished difference Result 29217 states and 84167 transitions. [2022-01-18 01:11:35,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:11:35,308 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 [2022-01-18 01:11:35,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:35,366 INFO L225 Difference]: With dead ends: 29217 [2022-01-18 01:11:35,366 INFO L226 Difference]: Without dead ends: 29217 [2022-01-18 01:11:35,366 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 [2022-01-18 01:11:35,366 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 1025 mSDsluCounter, 3277 mSDsCounter, 0 mSdLazyCounter, 937 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 3612 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:35,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1025 Valid, 3612 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 937 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:11:35,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29217 states. [2022-01-18 01:11:35,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29217 to 16145. [2022-01-18 01:11:35,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16145 states, 16144 states have (on average 2.871840931615461) internal successors, (46363), 16144 states have internal predecessors, (46363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16145 states to 16145 states and 46363 transitions. [2022-01-18 01:11:35,681 INFO L78 Accepts]: Start accepts. Automaton has 16145 states and 46363 transitions. Word has length 177 [2022-01-18 01:11:35,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:35,681 INFO L470 AbstractCegarLoop]: Abstraction has 16145 states and 46363 transitions. [2022-01-18 01:11:35,681 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) [2022-01-18 01:11:35,681 INFO L276 IsEmpty]: Start isEmpty. Operand 16145 states and 46363 transitions. [2022-01-18 01:11:35,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:35,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:35,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:35,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-18 01:11:35,703 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:35,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:35,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1042251538, now seen corresponding path program 17 times [2022-01-18 01:11:35,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:35,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667130494] [2022-01-18 01:11:35,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:35,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:36,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:36,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667130494] [2022-01-18 01:11:36,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667130494] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:36,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:36,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:11:36,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131407406] [2022-01-18 01:11:36,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:36,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:11:36,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:36,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:11:36,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:11:36,037 INFO L87 Difference]: Start difference. First operand 16145 states and 46363 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) [2022-01-18 01:11:36,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:36,706 INFO L93 Difference]: Finished difference Result 26246 states and 75870 transitions. [2022-01-18 01:11:36,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:11:36,706 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 [2022-01-18 01:11:36,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:36,757 INFO L225 Difference]: With dead ends: 26246 [2022-01-18 01:11:36,757 INFO L226 Difference]: Without dead ends: 26246 [2022-01-18 01:11:36,758 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 [2022-01-18 01:11:36,758 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1020 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:36,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 2998 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:11:36,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26246 states. [2022-01-18 01:11:37,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26246 to 16153. [2022-01-18 01:11:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16153 states, 16152 states have (on average 2.872275879148093) internal successors, (46393), 16152 states have internal predecessors, (46393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:37,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16153 states to 16153 states and 46393 transitions. [2022-01-18 01:11:37,067 INFO L78 Accepts]: Start accepts. Automaton has 16153 states and 46393 transitions. Word has length 177 [2022-01-18 01:11:37,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:37,067 INFO L470 AbstractCegarLoop]: Abstraction has 16153 states and 46393 transitions. [2022-01-18 01:11:37,067 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) [2022-01-18 01:11:37,068 INFO L276 IsEmpty]: Start isEmpty. Operand 16153 states and 46393 transitions. [2022-01-18 01:11:37,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:37,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:37,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:37,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-18 01:11:37,089 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:37,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:37,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1153370902, now seen corresponding path program 19 times [2022-01-18 01:11:37,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:37,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678933096] [2022-01-18 01:11:37,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:37,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:37,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:37,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678933096] [2022-01-18 01:11:37,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678933096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:37,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:37,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:11:37,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896440593] [2022-01-18 01:11:37,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:37,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:11:37,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:37,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:11:37,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:11:37,419 INFO L87 Difference]: Start difference. First operand 16153 states and 46393 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) [2022-01-18 01:11:38,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:38,130 INFO L93 Difference]: Finished difference Result 25916 states and 74852 transitions. [2022-01-18 01:11:38,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:11:38,130 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 [2022-01-18 01:11:38,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:38,178 INFO L225 Difference]: With dead ends: 25916 [2022-01-18 01:11:38,178 INFO L226 Difference]: Without dead ends: 25916 [2022-01-18 01:11:38,179 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 [2022-01-18 01:11:38,179 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1148 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:38,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1148 Valid, 2849 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:11:38,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25916 states. [2022-01-18 01:11:38,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25916 to 16185. [2022-01-18 01:11:38,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16185 states, 16184 states have (on average 2.872034107760751) internal successors, (46481), 16184 states have internal predecessors, (46481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:38,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16185 states to 16185 states and 46481 transitions. [2022-01-18 01:11:38,468 INFO L78 Accepts]: Start accepts. Automaton has 16185 states and 46481 transitions. Word has length 177 [2022-01-18 01:11:38,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:38,468 INFO L470 AbstractCegarLoop]: Abstraction has 16185 states and 46481 transitions. [2022-01-18 01:11:38,468 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) [2022-01-18 01:11:38,468 INFO L276 IsEmpty]: Start isEmpty. Operand 16185 states and 46481 transitions. [2022-01-18 01:11:38,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:38,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:38,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:38,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-18 01:11:38,490 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:38,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:38,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1560044802, now seen corresponding path program 20 times [2022-01-18 01:11:38,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:38,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016390568] [2022-01-18 01:11:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:38,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:38,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:38,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016390568] [2022-01-18 01:11:38,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016390568] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:11:38,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922012955] [2022-01-18 01:11:38,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:11:38,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:11:38,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:11:38,812 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) [2022-01-18 01:11:38,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 01:11:38,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:11:38,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:11:38,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 43 conjunts are in the unsatisfiable core [2022-01-18 01:11:38,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:11:39,394 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 11 treesize of output 7 [2022-01-18 01:11:39,520 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 [2022-01-18 01:11:39,601 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 [2022-01-18 01:11:39,899 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:11:39,899 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 [2022-01-18 01:11:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:11:39,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:11:40,247 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_1818 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1818))) (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)) (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 [2022-01-18 01:11:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-01-18 01:11:40,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922012955] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:11:40,353 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:11:40,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 49 [2022-01-18 01:11:40,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162336229] [2022-01-18 01:11:40,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:11:40,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 01:11:40,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:40,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 01:11:40,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2049, Unknown=1, NotChecked=92, Total=2352 [2022-01-18 01:11:40,354 INFO L87 Difference]: Start difference. First operand 16185 states and 46481 transitions. Second operand has 49 states, 49 states have (on average 8.142857142857142) internal successors, (399), 49 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) [2022-01-18 01:11:43,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:43,830 INFO L93 Difference]: Finished difference Result 44890 states and 130125 transitions. [2022-01-18 01:11:43,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 01:11:43,831 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 8.142857142857142) internal successors, (399), 49 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 [2022-01-18 01:11:43,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:43,917 INFO L225 Difference]: With dead ends: 44890 [2022-01-18 01:11:43,917 INFO L226 Difference]: Without dead ends: 44890 [2022-01-18 01:11:43,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 334 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2275 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2047, Invalid=8056, Unknown=1, NotChecked=198, Total=10302 [2022-01-18 01:11:43,918 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 3528 mSDsluCounter, 8339 mSDsCounter, 0 mSdLazyCounter, 2814 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3528 SdHoareTripleChecker+Valid, 8621 SdHoareTripleChecker+Invalid, 3928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1063 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:43,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3528 Valid, 8621 Invalid, 3928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2814 Invalid, 0 Unknown, 1063 Unchecked, 1.1s Time] [2022-01-18 01:11:43,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44890 states. [2022-01-18 01:11:44,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44890 to 18409. [2022-01-18 01:11:44,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18409 states, 18408 states have (on average 2.8870599739243805) internal successors, (53145), 18408 states have internal predecessors, (53145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:44,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18409 states to 18409 states and 53145 transitions. [2022-01-18 01:11:44,375 INFO L78 Accepts]: Start accepts. Automaton has 18409 states and 53145 transitions. Word has length 177 [2022-01-18 01:11:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:44,375 INFO L470 AbstractCegarLoop]: Abstraction has 18409 states and 53145 transitions. [2022-01-18 01:11:44,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 8.142857142857142) internal successors, (399), 49 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) [2022-01-18 01:11:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 18409 states and 53145 transitions. [2022-01-18 01:11:44,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:44,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:44,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:44,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-01-18 01:11:44,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:11:44,601 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:44,601 INFO L85 PathProgramCache]: Analyzing trace with hash 796291028, now seen corresponding path program 18 times [2022-01-18 01:11:44,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:44,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368261914] [2022-01-18 01:11:44,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:44,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:44,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:44,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:44,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:44,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368261914] [2022-01-18 01:11:44,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368261914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:44,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:44,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:11:44,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625325032] [2022-01-18 01:11:44,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:44,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:11:44,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:11:44,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:11:44,958 INFO L87 Difference]: Start difference. First operand 18409 states and 53145 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) [2022-01-18 01:11:45,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:45,640 INFO L93 Difference]: Finished difference Result 28034 states and 81060 transitions. [2022-01-18 01:11:45,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:11:45,640 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 [2022-01-18 01:11:45,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:45,694 INFO L225 Difference]: With dead ends: 28034 [2022-01-18 01:11:45,694 INFO L226 Difference]: Without dead ends: 28034 [2022-01-18 01:11:45,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=1081, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:11:45,694 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 915 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:45,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 3654 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:11:45,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28034 states. [2022-01-18 01:11:45,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28034 to 18425. [2022-01-18 01:11:45,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18425 states, 18424 states have (on average 2.8878093790707773) internal successors, (53205), 18424 states have internal predecessors, (53205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:46,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18425 states to 18425 states and 53205 transitions. [2022-01-18 01:11:46,014 INFO L78 Accepts]: Start accepts. Automaton has 18425 states and 53205 transitions. Word has length 177 [2022-01-18 01:11:46,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:46,014 INFO L470 AbstractCegarLoop]: Abstraction has 18425 states and 53205 transitions. [2022-01-18 01:11:46,014 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) [2022-01-18 01:11:46,014 INFO L276 IsEmpty]: Start isEmpty. Operand 18425 states and 53205 transitions. [2022-01-18 01:11:46,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:46,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:46,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:46,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-18 01:11:46,039 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:46,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:46,039 INFO L85 PathProgramCache]: Analyzing trace with hash -730622534, now seen corresponding path program 18 times [2022-01-18 01:11:46,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:46,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499208706] [2022-01-18 01:11:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:46,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:46,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:46,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:46,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499208706] [2022-01-18 01:11:46,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499208706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:46,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:46,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:11:46,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188936829] [2022-01-18 01:11:46,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:46,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:11:46,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:46,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:11:46,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:11:46,356 INFO L87 Difference]: Start difference. First operand 18425 states and 53205 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) [2022-01-18 01:11:46,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:46,955 INFO L93 Difference]: Finished difference Result 28004 states and 80982 transitions. [2022-01-18 01:11:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:11:46,955 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 [2022-01-18 01:11:46,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:47,008 INFO L225 Difference]: With dead ends: 28004 [2022-01-18 01:11:47,008 INFO L226 Difference]: Without dead ends: 28004 [2022-01-18 01:11:47,008 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 [2022-01-18 01:11:47,009 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 1148 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:47,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1148 Valid, 2792 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:11:47,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28004 states. [2022-01-18 01:11:47,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28004 to 18433. [2022-01-18 01:11:47,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18433 states, 18432 states have (on average 2.8877495659722223) internal successors, (53227), 18432 states have internal predecessors, (53227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:47,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18433 states to 18433 states and 53227 transitions. [2022-01-18 01:11:47,343 INFO L78 Accepts]: Start accepts. Automaton has 18433 states and 53227 transitions. Word has length 177 [2022-01-18 01:11:47,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:47,344 INFO L470 AbstractCegarLoop]: Abstraction has 18433 states and 53227 transitions. [2022-01-18 01:11:47,344 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) [2022-01-18 01:11:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 18433 states and 53227 transitions. [2022-01-18 01:11:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:47,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:47,369 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] [2022-01-18 01:11:47,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-18 01:11:47,369 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash -529073644, now seen corresponding path program 21 times [2022-01-18 01:11:47,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:47,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58166462] [2022-01-18 01:11:47,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:47,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:47,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:47,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:47,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58166462] [2022-01-18 01:11:47,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58166462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:47,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:47,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:11:47,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412521878] [2022-01-18 01:11:47,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:47,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:11:47,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:47,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:11:47,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:11:47,705 INFO L87 Difference]: Start difference. First operand 18433 states and 53227 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) [2022-01-18 01:11:48,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:48,357 INFO L93 Difference]: Finished difference Result 27820 states and 80468 transitions. [2022-01-18 01:11:48,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:11:48,357 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 [2022-01-18 01:11:48,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:48,410 INFO L225 Difference]: With dead ends: 27820 [2022-01-18 01:11:48,410 INFO L226 Difference]: Without dead ends: 27820 [2022-01-18 01:11:48,410 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 [2022-01-18 01:11:48,410 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 1168 mSDsluCounter, 2600 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 2891 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:48,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1168 Valid, 2891 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:11:48,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27820 states. [2022-01-18 01:11:48,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27820 to 18425. [2022-01-18 01:11:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18425 states, 18424 states have (on average 2.8878093790707773) internal successors, (53205), 18424 states have internal predecessors, (53205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:48,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18425 states to 18425 states and 53205 transitions. [2022-01-18 01:11:48,732 INFO L78 Accepts]: Start accepts. Automaton has 18425 states and 53205 transitions. Word has length 177 [2022-01-18 01:11:48,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:48,732 INFO L470 AbstractCegarLoop]: Abstraction has 18425 states and 53205 transitions. [2022-01-18 01:11:48,732 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) [2022-01-18 01:11:48,732 INFO L276 IsEmpty]: Start isEmpty. Operand 18425 states and 53205 transitions. [2022-01-18 01:11:48,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:48,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:48,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:48,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-18 01:11:48,757 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:48,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:48,757 INFO L85 PathProgramCache]: Analyzing trace with hash -65498902, now seen corresponding path program 14 times [2022-01-18 01:11:48,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:48,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31154191] [2022-01-18 01:11:48,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:48,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:49,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:49,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31154191] [2022-01-18 01:11:49,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31154191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:49,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:49,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:11:49,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324914976] [2022-01-18 01:11:49,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:49,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:11:49,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:49,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:11:49,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:11:49,139 INFO L87 Difference]: Start difference. First operand 18425 states and 53205 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) [2022-01-18 01:11:49,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:49,816 INFO L93 Difference]: Finished difference Result 27932 states and 80792 transitions. [2022-01-18 01:11:49,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:11:49,817 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 [2022-01-18 01:11:49,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:49,869 INFO L225 Difference]: With dead ends: 27932 [2022-01-18 01:11:49,869 INFO L226 Difference]: Without dead ends: 27932 [2022-01-18 01:11:49,870 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 [2022-01-18 01:11:49,870 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1044 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 3480 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:49,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 3480 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:11:49,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27932 states. [2022-01-18 01:11:50,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27932 to 18421. [2022-01-18 01:11:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18421 states, 18420 states have (on average 2.886373507057546) internal successors, (53167), 18420 states have internal predecessors, (53167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:50,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18421 states to 18421 states and 53167 transitions. [2022-01-18 01:11:50,179 INFO L78 Accepts]: Start accepts. Automaton has 18421 states and 53167 transitions. Word has length 177 [2022-01-18 01:11:50,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:50,179 INFO L470 AbstractCegarLoop]: Abstraction has 18421 states and 53167 transitions. [2022-01-18 01:11:50,179 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) [2022-01-18 01:11:50,179 INFO L276 IsEmpty]: Start isEmpty. Operand 18421 states and 53167 transitions. [2022-01-18 01:11:50,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:50,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:50,204 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] [2022-01-18 01:11:50,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-18 01:11:50,204 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:50,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:50,204 INFO L85 PathProgramCache]: Analyzing trace with hash -556952778, now seen corresponding path program 19 times [2022-01-18 01:11:50,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:50,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228027079] [2022-01-18 01:11:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:50,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:50,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:50,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:50,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:50,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228027079] [2022-01-18 01:11:50,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228027079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:50,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:50,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:11:50,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35969192] [2022-01-18 01:11:50,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:50,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:11:50,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:50,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:11:50,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:11:50,521 INFO L87 Difference]: Start difference. First operand 18421 states and 53167 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) [2022-01-18 01:11:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:51,278 INFO L93 Difference]: Finished difference Result 28660 states and 82810 transitions. [2022-01-18 01:11:51,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:11:51,279 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 [2022-01-18 01:11:51,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:51,335 INFO L225 Difference]: With dead ends: 28660 [2022-01-18 01:11:51,335 INFO L226 Difference]: Without dead ends: 28660 [2022-01-18 01:11:51,335 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 [2022-01-18 01:11:51,335 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 872 mSDsluCounter, 3394 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 3715 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:51,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 3715 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:11:51,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28660 states. [2022-01-18 01:11:51,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28660 to 18449. [2022-01-18 01:11:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18449 states, 18448 states have (on average 2.8856786643538594) internal successors, (53235), 18448 states have internal predecessors, (53235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18449 states to 18449 states and 53235 transitions. [2022-01-18 01:11:51,668 INFO L78 Accepts]: Start accepts. Automaton has 18449 states and 53235 transitions. Word has length 177 [2022-01-18 01:11:51,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:51,668 INFO L470 AbstractCegarLoop]: Abstraction has 18449 states and 53235 transitions. [2022-01-18 01:11:51,668 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) [2022-01-18 01:11:51,668 INFO L276 IsEmpty]: Start isEmpty. Operand 18449 states and 53235 transitions. [2022-01-18 01:11:51,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:51,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:51,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:51,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-18 01:11:51,693 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:51,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:51,693 INFO L85 PathProgramCache]: Analyzing trace with hash 685917474, now seen corresponding path program 20 times [2022-01-18 01:11:51,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:51,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245577868] [2022-01-18 01:11:51,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:51,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:52,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:52,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:52,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245577868] [2022-01-18 01:11:52,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245577868] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:11:52,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113066852] [2022-01-18 01:11:52,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:11:52,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:11:52,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:11:52,058 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) [2022-01-18 01:11:52,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 01:11:52,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:11:52,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:11:52,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 61 conjunts are in the unsatisfiable core [2022-01-18 01:11:52,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:11:52,222 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 [2022-01-18 01:11:52,239 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 01:11:52,239 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 [2022-01-18 01:11:52,359 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-01-18 01:11:52,359 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 [2022-01-18 01:11:52,463 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 [2022-01-18 01:11:52,763 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-01-18 01:11:52,764 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 [2022-01-18 01:11:52,865 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 [2022-01-18 01:11:52,992 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 [2022-01-18 01:11:53,067 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 [2022-01-18 01:11:53,281 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-18 01:11:53,281 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 [2022-01-18 01:11:53,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:11:53,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:11:53,632 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_1938 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1938))) (let ((.cse0 (select .cse3 ~get2~0.base)) (.cse2 (select .cse3 c_~get1~0.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 .cse0 c_~get2~0.offset) (select .cse2 c_~get1~0.offset)))))) is different from false [2022-01-18 01:11:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-01-18 01:11:53,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113066852] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:11:53,738 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:11:53,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 10] total 50 [2022-01-18 01:11:53,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601241380] [2022-01-18 01:11:53,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:11:53,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 01:11:53,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:53,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 01:11:53,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2156, Unknown=1, NotChecked=94, Total=2450 [2022-01-18 01:11:53,739 INFO L87 Difference]: Start difference. First operand 18449 states and 53235 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) [2022-01-18 01:11:56,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:56,764 INFO L93 Difference]: Finished difference Result 38077 states and 110065 transitions. [2022-01-18 01:11:56,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 01:11:56,764 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 [2022-01-18 01:11:56,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:56,838 INFO L225 Difference]: With dead ends: 38077 [2022-01-18 01:11:56,839 INFO L226 Difference]: Without dead ends: 38077 [2022-01-18 01:11:56,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 337 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2007 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1801, Invalid=7514, Unknown=1, NotChecked=190, Total=9506 [2022-01-18 01:11:56,840 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 2523 mSDsluCounter, 8824 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 9146 SdHoareTripleChecker+Invalid, 3751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1238 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:56,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2523 Valid, 9146 Invalid, 3751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2460 Invalid, 0 Unknown, 1238 Unchecked, 0.9s Time] [2022-01-18 01:11:56,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38077 states. [2022-01-18 01:11:57,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38077 to 17909. [2022-01-18 01:11:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17909 states, 17908 states have (on average 2.8875921375921374) internal successors, (51711), 17908 states have internal predecessors, (51711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:57,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17909 states to 17909 states and 51711 transitions. [2022-01-18 01:11:57,224 INFO L78 Accepts]: Start accepts. Automaton has 17909 states and 51711 transitions. Word has length 177 [2022-01-18 01:11:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:57,224 INFO L470 AbstractCegarLoop]: Abstraction has 17909 states and 51711 transitions. [2022-01-18 01:11:57,225 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) [2022-01-18 01:11:57,225 INFO L276 IsEmpty]: Start isEmpty. Operand 17909 states and 51711 transitions. [2022-01-18 01:11:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:57,248 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:57,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:57,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 01:11:57,449 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,SelfDestructingSolverStorable104 [2022-01-18 01:11:57,449 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:57,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:57,449 INFO L85 PathProgramCache]: Analyzing trace with hash 732676534, now seen corresponding path program 19 times [2022-01-18 01:11:57,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:57,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660328726] [2022-01-18 01:11:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:57,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:57,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:57,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660328726] [2022-01-18 01:11:57,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660328726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:57,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:57,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:11:57,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712266796] [2022-01-18 01:11:57,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:57,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:11:57,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:57,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:11:57,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:11:57,943 INFO L87 Difference]: Start difference. First operand 17909 states and 51711 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) [2022-01-18 01:11:58,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:11:58,717 INFO L93 Difference]: Finished difference Result 27666 states and 80116 transitions. [2022-01-18 01:11:58,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:11:58,717 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 [2022-01-18 01:11:58,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:11:58,772 INFO L225 Difference]: With dead ends: 27666 [2022-01-18 01:11:58,772 INFO L226 Difference]: Without dead ends: 27666 [2022-01-18 01:11:58,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=364, Invalid=1196, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 01:11:58,773 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 826 mSDsluCounter, 3858 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 4125 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:11:58,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 4125 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:11:58,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27666 states. [2022-01-18 01:11:59,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27666 to 17909. [2022-01-18 01:11:59,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17909 states, 17908 states have (on average 2.8875921375921374) internal successors, (51711), 17908 states have internal predecessors, (51711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:11:59,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17909 states to 17909 states and 51711 transitions. [2022-01-18 01:11:59,094 INFO L78 Accepts]: Start accepts. Automaton has 17909 states and 51711 transitions. Word has length 177 [2022-01-18 01:11:59,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:11:59,094 INFO L470 AbstractCegarLoop]: Abstraction has 17909 states and 51711 transitions. [2022-01-18 01:11:59,095 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) [2022-01-18 01:11:59,095 INFO L276 IsEmpty]: Start isEmpty. Operand 17909 states and 51711 transitions. [2022-01-18 01:11:59,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:11:59,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:11:59,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:11:59,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-18 01:11:59,119 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:11:59,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:11:59,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1840748610, now seen corresponding path program 21 times [2022-01-18 01:11:59,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:11:59,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993896234] [2022-01-18 01:11:59,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:11:59,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:11:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:11:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:11:59,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:11:59,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993896234] [2022-01-18 01:11:59,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993896234] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:11:59,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:11:59,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:11:59,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894993200] [2022-01-18 01:11:59,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:11:59,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:11:59,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:11:59,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:11:59,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:11:59,451 INFO L87 Difference]: Start difference. First operand 17909 states and 51711 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) [2022-01-18 01:12:00,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:00,103 INFO L93 Difference]: Finished difference Result 27256 states and 78846 transitions. [2022-01-18 01:12:00,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:12:00,103 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 [2022-01-18 01:12:00,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:00,155 INFO L225 Difference]: With dead ends: 27256 [2022-01-18 01:12:00,156 INFO L226 Difference]: Without dead ends: 27256 [2022-01-18 01:12:00,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=357, Invalid=1125, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 01:12:00,156 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 806 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:00,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 3091 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:12:00,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27256 states. [2022-01-18 01:12:00,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27256 to 17917. [2022-01-18 01:12:00,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17917 states, 17916 states have (on average 2.887195802634517) internal successors, (51727), 17916 states have internal predecessors, (51727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:00,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17917 states to 17917 states and 51727 transitions. [2022-01-18 01:12:00,474 INFO L78 Accepts]: Start accepts. Automaton has 17917 states and 51727 transitions. Word has length 177 [2022-01-18 01:12:00,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:00,474 INFO L470 AbstractCegarLoop]: Abstraction has 17917 states and 51727 transitions. [2022-01-18 01:12:00,474 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) [2022-01-18 01:12:00,474 INFO L276 IsEmpty]: Start isEmpty. Operand 17917 states and 51727 transitions. [2022-01-18 01:12:00,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:00,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:00,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:00,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-18 01:12:00,510 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:00,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:00,510 INFO L85 PathProgramCache]: Analyzing trace with hash -597878358, now seen corresponding path program 22 times [2022-01-18 01:12:00,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:00,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754113395] [2022-01-18 01:12:00,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:00,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:00,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:00,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:00,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754113395] [2022-01-18 01:12:00,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754113395] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:12:00,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746051323] [2022-01-18 01:12:00,834 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:12:00,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:12:00,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:12:00,835 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) [2022-01-18 01:12:00,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 01:12:00,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:12:00,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:12:00,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-18 01:12:00,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:12:01,443 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 [2022-01-18 01:12:01,593 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 [2022-01-18 01:12:01,704 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 [2022-01-18 01:12:01,910 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-18 01:12:01,911 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 [2022-01-18 01:12:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:12:01,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:12:02,211 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 [2022-01-18 01:12:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 1 not checked. [2022-01-18 01:12:02,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746051323] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:12:02,317 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:12:02,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 10] total 45 [2022-01-18 01:12:02,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906920683] [2022-01-18 01:12:02,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:12:02,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 01:12:02,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:02,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 01:12:02,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1700, Unknown=1, NotChecked=84, Total=1980 [2022-01-18 01:12:02,318 INFO L87 Difference]: Start difference. First operand 17917 states and 51727 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) [2022-01-18 01:12:04,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:04,902 INFO L93 Difference]: Finished difference Result 29579 states and 85397 transitions. [2022-01-18 01:12:04,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 01:12:04,902 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 [2022-01-18 01:12:04,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:04,959 INFO L225 Difference]: With dead ends: 29579 [2022-01-18 01:12:04,959 INFO L226 Difference]: Without dead ends: 29579 [2022-01-18 01:12:04,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 342 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1318, Invalid=5327, Unknown=1, NotChecked=160, Total=6806 [2022-01-18 01:12:04,960 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 2305 mSDsluCounter, 7264 mSDsCounter, 0 mSdLazyCounter, 2945 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 7505 SdHoareTripleChecker+Invalid, 4053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1069 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:04,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2305 Valid, 7505 Invalid, 4053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2945 Invalid, 0 Unknown, 1069 Unchecked, 1.1s Time] [2022-01-18 01:12:04,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29579 states. [2022-01-18 01:12:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29579 to 17665. [2022-01-18 01:12:05,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17665 states, 17664 states have (on average 2.8878509963768115) internal successors, (51011), 17664 states have internal predecessors, (51011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17665 states to 17665 states and 51011 transitions. [2022-01-18 01:12:05,298 INFO L78 Accepts]: Start accepts. Automaton has 17665 states and 51011 transitions. Word has length 177 [2022-01-18 01:12:05,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:05,298 INFO L470 AbstractCegarLoop]: Abstraction has 17665 states and 51011 transitions. [2022-01-18 01:12:05,298 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) [2022-01-18 01:12:05,298 INFO L276 IsEmpty]: Start isEmpty. Operand 17665 states and 51011 transitions. [2022-01-18 01:12:05,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:05,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:05,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:05,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-01-18 01:12:05,523 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,SelfDestructingSolverStorable107 [2022-01-18 01:12:05,523 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:05,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:05,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1723748196, now seen corresponding path program 20 times [2022-01-18 01:12:05,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:05,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604840284] [2022-01-18 01:12:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:05,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:05,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:05,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604840284] [2022-01-18 01:12:05,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604840284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:05,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:05,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:12:05,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287219897] [2022-01-18 01:12:05,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:05,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:12:05,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:05,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:12:05,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:12:05,859 INFO L87 Difference]: Start difference. First operand 17665 states and 51011 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) [2022-01-18 01:12:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:06,460 INFO L93 Difference]: Finished difference Result 27082 states and 78364 transitions. [2022-01-18 01:12:06,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:12:06,460 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 [2022-01-18 01:12:06,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:06,511 INFO L225 Difference]: With dead ends: 27082 [2022-01-18 01:12:06,512 INFO L226 Difference]: Without dead ends: 27082 [2022-01-18 01:12:06,512 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 [2022-01-18 01:12:06,512 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 1046 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:06,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1046 Valid, 2740 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:12:06,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27082 states. [2022-01-18 01:12:06,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27082 to 17681. [2022-01-18 01:12:06,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17681 states, 17680 states have (on average 2.888631221719457) internal successors, (51071), 17680 states have internal predecessors, (51071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17681 states to 17681 states and 51071 transitions. [2022-01-18 01:12:06,886 INFO L78 Accepts]: Start accepts. Automaton has 17681 states and 51071 transitions. Word has length 177 [2022-01-18 01:12:06,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:06,886 INFO L470 AbstractCegarLoop]: Abstraction has 17681 states and 51071 transitions. [2022-01-18 01:12:06,886 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) [2022-01-18 01:12:06,886 INFO L276 IsEmpty]: Start isEmpty. Operand 17681 states and 51071 transitions. [2022-01-18 01:12:06,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:06,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:06,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:06,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-18 01:12:06,910 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:06,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:06,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1044305538, now seen corresponding path program 23 times [2022-01-18 01:12:06,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:06,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403270841] [2022-01-18 01:12:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:06,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:07,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:07,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403270841] [2022-01-18 01:12:07,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403270841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:07,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:07,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:12:07,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758098390] [2022-01-18 01:12:07,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:07,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:12:07,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:07,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:12:07,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:12:07,229 INFO L87 Difference]: Start difference. First operand 17681 states and 51071 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) [2022-01-18 01:12:07,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:07,831 INFO L93 Difference]: Finished difference Result 27036 states and 78234 transitions. [2022-01-18 01:12:07,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:12:07,831 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 [2022-01-18 01:12:07,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:07,883 INFO L225 Difference]: With dead ends: 27036 [2022-01-18 01:12:07,884 INFO L226 Difference]: Without dead ends: 27036 [2022-01-18 01:12:07,884 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 [2022-01-18 01:12:07,884 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 1084 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:07,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 2630 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:12:07,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27036 states. [2022-01-18 01:12:08,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27036 to 17689. [2022-01-18 01:12:08,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17689 states, 17688 states have (on average 2.8885685210312078) internal successors, (51093), 17688 states have internal predecessors, (51093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17689 states to 17689 states and 51093 transitions. [2022-01-18 01:12:08,191 INFO L78 Accepts]: Start accepts. Automaton has 17689 states and 51093 transitions. Word has length 177 [2022-01-18 01:12:08,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:08,191 INFO L470 AbstractCegarLoop]: Abstraction has 17689 states and 51093 transitions. [2022-01-18 01:12:08,191 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) [2022-01-18 01:12:08,191 INFO L276 IsEmpty]: Start isEmpty. Operand 17689 states and 51093 transitions. [2022-01-18 01:12:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:08,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:08,214 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] [2022-01-18 01:12:08,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-18 01:12:08,214 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:08,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:08,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1245854428, now seen corresponding path program 22 times [2022-01-18 01:12:08,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:08,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312040944] [2022-01-18 01:12:08,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:08,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:08,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:08,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312040944] [2022-01-18 01:12:08,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312040944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:08,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:08,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:12:08,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377603672] [2022-01-18 01:12:08,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:08,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:12:08,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:08,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:12:08,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:12:08,558 INFO L87 Difference]: Start difference. First operand 17689 states and 51093 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) [2022-01-18 01:12:09,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:09,211 INFO L93 Difference]: Finished difference Result 26732 states and 77390 transitions. [2022-01-18 01:12:09,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:12:09,212 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 [2022-01-18 01:12:09,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:09,261 INFO L225 Difference]: With dead ends: 26732 [2022-01-18 01:12:09,262 INFO L226 Difference]: Without dead ends: 26732 [2022-01-18 01:12:09,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=376, Invalid=1184, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 01:12:09,262 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1311 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 2898 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:09,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1311 Valid, 2898 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:12:09,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26732 states. [2022-01-18 01:12:09,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26732 to 17681. [2022-01-18 01:12:09,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17681 states, 17680 states have (on average 2.888631221719457) internal successors, (51071), 17680 states have internal predecessors, (51071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:09,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17681 states to 17681 states and 51071 transitions. [2022-01-18 01:12:09,557 INFO L78 Accepts]: Start accepts. Automaton has 17681 states and 51071 transitions. Word has length 177 [2022-01-18 01:12:09,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:09,557 INFO L470 AbstractCegarLoop]: Abstraction has 17681 states and 51071 transitions. [2022-01-18 01:12:09,557 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) [2022-01-18 01:12:09,557 INFO L276 IsEmpty]: Start isEmpty. Operand 17681 states and 51071 transitions. [2022-01-18 01:12:09,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:09,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:09,580 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] [2022-01-18 01:12:09,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-18 01:12:09,580 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:09,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:09,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1709429170, now seen corresponding path program 15 times [2022-01-18 01:12:09,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:09,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580249105] [2022-01-18 01:12:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:09,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:09,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:09,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580249105] [2022-01-18 01:12:09,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580249105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:09,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:09,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:12:09,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626537037] [2022-01-18 01:12:09,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:09,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:12:09,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:09,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:12:09,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:12:09,993 INFO L87 Difference]: Start difference. First operand 17681 states and 51071 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) [2022-01-18 01:12:10,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:10,755 INFO L93 Difference]: Finished difference Result 26876 states and 77802 transitions. [2022-01-18 01:12:10,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:12:10,755 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 [2022-01-18 01:12:10,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:10,806 INFO L225 Difference]: With dead ends: 26876 [2022-01-18 01:12:10,806 INFO L226 Difference]: Without dead ends: 26876 [2022-01-18 01:12:10,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=369, Invalid=1113, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 01:12:10,806 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1256 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:10,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1256 Valid, 3441 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:12:10,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26876 states. [2022-01-18 01:12:11,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26876 to 17657. [2022-01-18 01:12:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17657 states, 17656 states have (on average 2.8874603534209333) internal successors, (50981), 17656 states have internal predecessors, (50981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:11,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17657 states to 17657 states and 50981 transitions. [2022-01-18 01:12:11,105 INFO L78 Accepts]: Start accepts. Automaton has 17657 states and 50981 transitions. Word has length 177 [2022-01-18 01:12:11,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:11,105 INFO L470 AbstractCegarLoop]: Abstraction has 17657 states and 50981 transitions. [2022-01-18 01:12:11,105 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) [2022-01-18 01:12:11,105 INFO L276 IsEmpty]: Start isEmpty. Operand 17657 states and 50981 transitions. [2022-01-18 01:12:11,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:11,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:11,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:11,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-18 01:12:11,128 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:11,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:11,129 INFO L85 PathProgramCache]: Analyzing trace with hash 895297868, now seen corresponding path program 21 times [2022-01-18 01:12:11,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:11,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731462810] [2022-01-18 01:12:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:11,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:11,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:11,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731462810] [2022-01-18 01:12:11,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731462810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:11,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:11,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:12:11,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602910025] [2022-01-18 01:12:11,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:11,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:12:11,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:11,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:12:11,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:12:11,482 INFO L87 Difference]: Start difference. First operand 17657 states and 50981 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) [2022-01-18 01:12:12,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:12,195 INFO L93 Difference]: Finished difference Result 26970 states and 78000 transitions. [2022-01-18 01:12:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 01:12:12,195 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 [2022-01-18 01:12:12,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:12,245 INFO L225 Difference]: With dead ends: 26970 [2022-01-18 01:12:12,246 INFO L226 Difference]: Without dead ends: 26970 [2022-01-18 01:12:12,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:12:12,246 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 799 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 3957 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:12,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [799 Valid, 3957 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:12:12,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26970 states. [2022-01-18 01:12:12,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26970 to 17657. [2022-01-18 01:12:12,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17657 states, 17656 states have (on average 2.887007249660172) internal successors, (50973), 17656 states have internal predecessors, (50973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:12,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17657 states to 17657 states and 50973 transitions. [2022-01-18 01:12:12,542 INFO L78 Accepts]: Start accepts. Automaton has 17657 states and 50973 transitions. Word has length 177 [2022-01-18 01:12:12,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:12,542 INFO L470 AbstractCegarLoop]: Abstraction has 17657 states and 50973 transitions. [2022-01-18 01:12:12,542 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) [2022-01-18 01:12:12,542 INFO L276 IsEmpty]: Start isEmpty. Operand 17657 states and 50973 transitions. [2022-01-18 01:12:12,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:12,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:12,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:12,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-18 01:12:12,565 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:12,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:12,565 INFO L85 PathProgramCache]: Analyzing trace with hash -631615694, now seen corresponding path program 24 times [2022-01-18 01:12:12,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:12,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019100082] [2022-01-18 01:12:12,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:12,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:12,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:12,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019100082] [2022-01-18 01:12:12,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019100082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:12,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:12,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:12:12,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682337842] [2022-01-18 01:12:12,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:12,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:12:12,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:12,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:12:12,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:12:12,945 INFO L87 Difference]: Start difference. First operand 17657 states and 50973 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) [2022-01-18 01:12:13,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:13,513 INFO L93 Difference]: Finished difference Result 26312 states and 75904 transitions. [2022-01-18 01:12:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 01:12:13,514 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 [2022-01-18 01:12:13,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:13,566 INFO L225 Difference]: With dead ends: 26312 [2022-01-18 01:12:13,566 INFO L226 Difference]: Without dead ends: 26312 [2022-01-18 01:12:13,566 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 [2022-01-18 01:12:13,566 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 751 mSDsluCounter, 2489 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:13,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 2776 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:12:13,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26312 states. [2022-01-18 01:12:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26312 to 17185. [2022-01-18 01:12:13,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17185 states, 17184 states have (on average 2.873195996275605) internal successors, (49373), 17184 states have internal predecessors, (49373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17185 states to 17185 states and 49373 transitions. [2022-01-18 01:12:13,856 INFO L78 Accepts]: Start accepts. Automaton has 17185 states and 49373 transitions. Word has length 177 [2022-01-18 01:12:13,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:13,857 INFO L470 AbstractCegarLoop]: Abstraction has 17185 states and 49373 transitions. [2022-01-18 01:12:13,857 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) [2022-01-18 01:12:13,857 INFO L276 IsEmpty]: Start isEmpty. Operand 17185 states and 49373 transitions. [2022-01-18 01:12:13,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:13,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:13,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:13,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-18 01:12:13,879 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:13,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:13,879 INFO L85 PathProgramCache]: Analyzing trace with hash -430066804, now seen corresponding path program 23 times [2022-01-18 01:12:13,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:13,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134297553] [2022-01-18 01:12:13,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:13,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:14,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:14,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:14,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134297553] [2022-01-18 01:12:14,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134297553] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:14,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:14,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:12:14,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501913354] [2022-01-18 01:12:14,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:14,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:12:14,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:14,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:12:14,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:12:14,214 INFO L87 Difference]: Start difference. First operand 17185 states and 49373 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) [2022-01-18 01:12:14,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:14,918 INFO L93 Difference]: Finished difference Result 26156 states and 75460 transitions. [2022-01-18 01:12:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:12:14,919 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 [2022-01-18 01:12:14,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:14,967 INFO L225 Difference]: With dead ends: 26156 [2022-01-18 01:12:14,967 INFO L226 Difference]: Without dead ends: 26156 [2022-01-18 01:12:14,968 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 [2022-01-18 01:12:14,968 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1470 mSDsluCounter, 3174 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 3452 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:14,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 3452 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:12:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26156 states. [2022-01-18 01:12:15,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26156 to 17185. [2022-01-18 01:12:15,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17185 states, 17184 states have (on average 2.873195996275605) internal successors, (49373), 17184 states have internal predecessors, (49373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:15,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17185 states to 17185 states and 49373 transitions. [2022-01-18 01:12:15,256 INFO L78 Accepts]: Start accepts. Automaton has 17185 states and 49373 transitions. Word has length 177 [2022-01-18 01:12:15,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:15,257 INFO L470 AbstractCegarLoop]: Abstraction has 17185 states and 49373 transitions. [2022-01-18 01:12:15,257 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) [2022-01-18 01:12:15,257 INFO L276 IsEmpty]: Start isEmpty. Operand 17185 states and 49373 transitions. [2022-01-18 01:12:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:15,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:15,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:15,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-18 01:12:15,280 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:15,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:15,280 INFO L85 PathProgramCache]: Analyzing trace with hash 33507938, now seen corresponding path program 16 times [2022-01-18 01:12:15,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:15,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473505181] [2022-01-18 01:12:15,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:15,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:15,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:15,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:15,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473505181] [2022-01-18 01:12:15,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473505181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:15,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:15,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:12:15,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811088248] [2022-01-18 01:12:15,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:15,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:12:15,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:15,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:12:15,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:12:15,610 INFO L87 Difference]: Start difference. First operand 17185 states and 49373 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) [2022-01-18 01:12:16,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:16,328 INFO L93 Difference]: Finished difference Result 26308 states and 75894 transitions. [2022-01-18 01:12:16,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:12:16,329 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 [2022-01-18 01:12:16,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:16,377 INFO L225 Difference]: With dead ends: 26308 [2022-01-18 01:12:16,377 INFO L226 Difference]: Without dead ends: 26308 [2022-01-18 01:12:16,377 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 [2022-01-18 01:12:16,378 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 851 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 3668 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:16,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 3668 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:12:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26308 states. [2022-01-18 01:12:16,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26308 to 17177. [2022-01-18 01:12:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17177 states, 17176 states have (on average 2.872321844434094) internal successors, (49335), 17176 states have internal predecessors, (49335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:16,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17177 states to 17177 states and 49335 transitions. [2022-01-18 01:12:16,665 INFO L78 Accepts]: Start accepts. Automaton has 17177 states and 49335 transitions. Word has length 177 [2022-01-18 01:12:16,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:16,665 INFO L470 AbstractCegarLoop]: Abstraction has 17177 states and 49335 transitions. [2022-01-18 01:12:16,665 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) [2022-01-18 01:12:16,665 INFO L276 IsEmpty]: Start isEmpty. Operand 17177 states and 49335 transitions. [2022-01-18 01:12:16,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:16,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:16,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:16,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-18 01:12:16,687 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:16,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:16,687 INFO L85 PathProgramCache]: Analyzing trace with hash -2064745658, now seen corresponding path program 24 times [2022-01-18 01:12:16,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:16,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160218134] [2022-01-18 01:12:16,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:16,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:17,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:17,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:17,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160218134] [2022-01-18 01:12:17,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160218134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:17,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:17,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:12:17,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734409465] [2022-01-18 01:12:17,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:17,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:12:17,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:17,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:12:17,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:12:17,025 INFO L87 Difference]: Start difference. First operand 17177 states and 49335 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) [2022-01-18 01:12:17,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:17,740 INFO L93 Difference]: Finished difference Result 24860 states and 71644 transitions. [2022-01-18 01:12:17,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 01:12:17,740 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 [2022-01-18 01:12:17,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:17,787 INFO L225 Difference]: With dead ends: 24860 [2022-01-18 01:12:17,787 INFO L226 Difference]: Without dead ends: 24860 [2022-01-18 01:12:17,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=419, Invalid=1303, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 01:12:17,788 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1110 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:17,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1110 Valid, 3354 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:12:17,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24860 states. [2022-01-18 01:12:18,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24860 to 16177. [2022-01-18 01:12:18,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16177 states, 16176 states have (on average 2.8720944609297727) internal successors, (46459), 16176 states have internal predecessors, (46459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:18,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16177 states to 16177 states and 46459 transitions. [2022-01-18 01:12:18,069 INFO L78 Accepts]: Start accepts. Automaton has 16177 states and 46459 transitions. Word has length 177 [2022-01-18 01:12:18,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:18,069 INFO L470 AbstractCegarLoop]: Abstraction has 16177 states and 46459 transitions. [2022-01-18 01:12:18,069 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) [2022-01-18 01:12:18,070 INFO L276 IsEmpty]: Start isEmpty. Operand 16177 states and 46459 transitions. [2022-01-18 01:12:18,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:18,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:18,093 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:18,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-18 01:12:18,093 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:18,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:18,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1769863266, now seen corresponding path program 17 times [2022-01-18 01:12:18,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:18,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414820321] [2022-01-18 01:12:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:18,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:18,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:18,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414820321] [2022-01-18 01:12:18,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414820321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:18,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:18,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:12:18,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186388475] [2022-01-18 01:12:18,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:18,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:12:18,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:18,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:12:18,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:12:18,429 INFO L87 Difference]: Start difference. First operand 16177 states and 46459 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) [2022-01-18 01:12:19,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:19,105 INFO L93 Difference]: Finished difference Result 24948 states and 71878 transitions. [2022-01-18 01:12:19,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 01:12:19,105 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 [2022-01-18 01:12:19,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:19,151 INFO L225 Difference]: With dead ends: 24948 [2022-01-18 01:12:19,151 INFO L226 Difference]: Without dead ends: 24948 [2022-01-18 01:12:19,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=411, Invalid=1229, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 01:12:19,152 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1129 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:19,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 2778 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:12:19,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24948 states. [2022-01-18 01:12:19,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24948 to 16193. [2022-01-18 01:12:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16193 states, 16192 states have (on average 2.871973814229249) internal successors, (46503), 16192 states have internal predecessors, (46503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16193 states to 16193 states and 46503 transitions. [2022-01-18 01:12:19,487 INFO L78 Accepts]: Start accepts. Automaton has 16193 states and 46503 transitions. Word has length 177 [2022-01-18 01:12:19,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:19,487 INFO L470 AbstractCegarLoop]: Abstraction has 16193 states and 46503 transitions. [2022-01-18 01:12:19,487 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) [2022-01-18 01:12:19,487 INFO L276 IsEmpty]: Start isEmpty. Operand 16193 states and 46503 transitions. [2022-01-18 01:12:19,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:19,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:19,508 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] [2022-01-18 01:12:19,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-18 01:12:19,508 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:19,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:19,509 INFO L85 PathProgramCache]: Analyzing trace with hash 430740608, now seen corresponding path program 18 times [2022-01-18 01:12:19,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:19,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511077429] [2022-01-18 01:12:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:19,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:19,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:19,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:19,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511077429] [2022-01-18 01:12:19,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511077429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:19,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:19,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:12:19,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971846010] [2022-01-18 01:12:19,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:19,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:12:19,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:19,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:12:19,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:12:19,813 INFO L87 Difference]: Start difference. First operand 16193 states and 46503 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) [2022-01-18 01:12:20,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:20,582 INFO L93 Difference]: Finished difference Result 24932 states and 71626 transitions. [2022-01-18 01:12:20,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:12:20,582 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 [2022-01-18 01:12:20,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:20,633 INFO L225 Difference]: With dead ends: 24932 [2022-01-18 01:12:20,633 INFO L226 Difference]: Without dead ends: 24932 [2022-01-18 01:12:20,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=430, Invalid=1292, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 01:12:20,634 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 859 mSDsluCounter, 3365 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 3689 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:20,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [859 Valid, 3689 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:12:20,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24932 states. [2022-01-18 01:12:20,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24932 to 16129. [2022-01-18 01:12:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16129 states, 16128 states have (on average 2.8719618055555554) internal successors, (46319), 16128 states have internal predecessors, (46319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:20,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16129 states to 16129 states and 46319 transitions. [2022-01-18 01:12:20,918 INFO L78 Accepts]: Start accepts. Automaton has 16129 states and 46319 transitions. Word has length 177 [2022-01-18 01:12:20,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:20,918 INFO L470 AbstractCegarLoop]: Abstraction has 16129 states and 46319 transitions. [2022-01-18 01:12:20,918 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) [2022-01-18 01:12:20,918 INFO L276 IsEmpty]: Start isEmpty. Operand 16129 states and 46319 transitions. [2022-01-18 01:12:20,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:20,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:20,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:20,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-18 01:12:20,939 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:20,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:20,940 INFO L85 PathProgramCache]: Analyzing trace with hash 106754244, now seen corresponding path program 22 times [2022-01-18 01:12:20,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:20,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127379255] [2022-01-18 01:12:20,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:20,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:21,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:21,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127379255] [2022-01-18 01:12:21,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127379255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:21,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:21,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:12:21,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094556845] [2022-01-18 01:12:21,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:21,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:12:21,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:21,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:12:21,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:12:21,329 INFO L87 Difference]: Start difference. First operand 16129 states and 46319 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) [2022-01-18 01:12:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:22,210 INFO L93 Difference]: Finished difference Result 31856 states and 91503 transitions. [2022-01-18 01:12:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 01:12:22,211 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 [2022-01-18 01:12:22,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:22,270 INFO L225 Difference]: With dead ends: 31856 [2022-01-18 01:12:22,271 INFO L226 Difference]: Without dead ends: 31856 [2022-01-18 01:12:22,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1621, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 01:12:22,271 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 1513 mSDsluCounter, 3513 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 3830 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:22,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 3830 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:12:22,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31856 states. [2022-01-18 01:12:22,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31856 to 16129. [2022-01-18 01:12:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16129 states, 16128 states have (on average 2.8719618055555554) internal successors, (46319), 16128 states have internal predecessors, (46319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16129 states to 16129 states and 46319 transitions. [2022-01-18 01:12:22,585 INFO L78 Accepts]: Start accepts. Automaton has 16129 states and 46319 transitions. Word has length 177 [2022-01-18 01:12:22,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:22,585 INFO L470 AbstractCegarLoop]: Abstraction has 16129 states and 46319 transitions. [2022-01-18 01:12:22,585 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) [2022-01-18 01:12:22,585 INFO L276 IsEmpty]: Start isEmpty. Operand 16129 states and 46319 transitions. [2022-01-18 01:12:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:22,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:22,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:22,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-18 01:12:22,606 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:22,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:22,606 INFO L85 PathProgramCache]: Analyzing trace with hash -480864666, now seen corresponding path program 23 times [2022-01-18 01:12:22,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:22,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202142858] [2022-01-18 01:12:22,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:22,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:23,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:23,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:23,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202142858] [2022-01-18 01:12:23,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202142858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:23,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:23,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:12:23,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429427450] [2022-01-18 01:12:23,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:23,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:12:23,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:23,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:12:23,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:12:23,018 INFO L87 Difference]: Start difference. First operand 16129 states and 46319 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) [2022-01-18 01:12:24,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:24,112 INFO L93 Difference]: Finished difference Result 29491 states and 84943 transitions. [2022-01-18 01:12:24,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 01:12:24,112 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 [2022-01-18 01:12:24,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:24,171 INFO L225 Difference]: With dead ends: 29491 [2022-01-18 01:12:24,171 INFO L226 Difference]: Without dead ends: 29491 [2022-01-18 01:12:24,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=561, Invalid=1989, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 01:12:24,171 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 1413 mSDsluCounter, 4279 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:24,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1413 Valid, 4592 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:12:24,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29491 states. [2022-01-18 01:12:24,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29491 to 16145. [2022-01-18 01:12:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16145 states, 16144 states have (on average 2.8728320118929633) internal successors, (46379), 16144 states have internal predecessors, (46379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:24,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16145 states to 16145 states and 46379 transitions. [2022-01-18 01:12:24,494 INFO L78 Accepts]: Start accepts. Automaton has 16145 states and 46379 transitions. Word has length 177 [2022-01-18 01:12:24,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:24,495 INFO L470 AbstractCegarLoop]: Abstraction has 16145 states and 46379 transitions. [2022-01-18 01:12:24,495 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) [2022-01-18 01:12:24,495 INFO L276 IsEmpty]: Start isEmpty. Operand 16145 states and 46379 transitions. [2022-01-18 01:12:24,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:24,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:24,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:24,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-18 01:12:24,517 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:24,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:24,517 INFO L85 PathProgramCache]: Analyzing trace with hash -643153592, now seen corresponding path program 24 times [2022-01-18 01:12:24,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:24,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635161684] [2022-01-18 01:12:24,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:24,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:24,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:24,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635161684] [2022-01-18 01:12:24,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635161684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:24,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:24,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:12:24,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349110651] [2022-01-18 01:12:24,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:24,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:12:24,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:24,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:12:24,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:12:24,963 INFO L87 Difference]: Start difference. First operand 16145 states and 46379 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) [2022-01-18 01:12:25,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:25,934 INFO L93 Difference]: Finished difference Result 25830 states and 74674 transitions. [2022-01-18 01:12:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 01:12:25,934 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 [2022-01-18 01:12:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:25,984 INFO L225 Difference]: With dead ends: 25830 [2022-01-18 01:12:25,984 INFO L226 Difference]: Without dead ends: 25830 [2022-01-18 01:12:25,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 01:12:25,985 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1306 mSDsluCounter, 3607 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:25,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1306 Valid, 3889 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:12:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25830 states. [2022-01-18 01:12:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25830 to 16153. [2022-01-18 01:12:26,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16153 states, 16152 states have (on average 2.8732664685487865) internal successors, (46409), 16152 states have internal predecessors, (46409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:26,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16153 states to 16153 states and 46409 transitions. [2022-01-18 01:12:26,398 INFO L78 Accepts]: Start accepts. Automaton has 16153 states and 46409 transitions. Word has length 177 [2022-01-18 01:12:26,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:26,399 INFO L470 AbstractCegarLoop]: Abstraction has 16153 states and 46409 transitions. [2022-01-18 01:12:26,399 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) [2022-01-18 01:12:26,399 INFO L276 IsEmpty]: Start isEmpty. Operand 16153 states and 46409 transitions. [2022-01-18 01:12:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:26,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:26,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:26,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-18 01:12:26,421 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:26,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash 184108908, now seen corresponding path program 25 times [2022-01-18 01:12:26,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:26,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400054633] [2022-01-18 01:12:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:26,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:26,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:26,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:26,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400054633] [2022-01-18 01:12:26,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400054633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:26,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:26,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:12:26,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487395841] [2022-01-18 01:12:26,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:26,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:12:26,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:26,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:12:26,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:12:26,906 INFO L87 Difference]: Start difference. First operand 16153 states and 46409 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) [2022-01-18 01:12:27,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:27,818 INFO L93 Difference]: Finished difference Result 25392 states and 73368 transitions. [2022-01-18 01:12:27,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 01:12:27,818 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 [2022-01-18 01:12:27,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:27,867 INFO L225 Difference]: With dead ends: 25392 [2022-01-18 01:12:27,867 INFO L226 Difference]: Without dead ends: 25392 [2022-01-18 01:12:27,868 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 [2022-01-18 01:12:27,868 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1331 mSDsluCounter, 2916 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:27,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1331 Valid, 3200 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:12:27,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25392 states. [2022-01-18 01:12:28,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25392 to 16185. [2022-01-18 01:12:28,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16185 states, 16184 states have (on average 2.8730227385071676) internal successors, (46497), 16184 states have internal predecessors, (46497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:28,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16185 states to 16185 states and 46497 transitions. [2022-01-18 01:12:28,151 INFO L78 Accepts]: Start accepts. Automaton has 16185 states and 46497 transitions. Word has length 177 [2022-01-18 01:12:28,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:28,151 INFO L470 AbstractCegarLoop]: Abstraction has 16185 states and 46497 transitions. [2022-01-18 01:12:28,152 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) [2022-01-18 01:12:28,152 INFO L276 IsEmpty]: Start isEmpty. Operand 16185 states and 46497 transitions. [2022-01-18 01:12:28,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:28,173 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:28,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:28,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-18 01:12:28,174 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:28,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:28,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1712752536, now seen corresponding path program 26 times [2022-01-18 01:12:28,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:28,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559569181] [2022-01-18 01:12:28,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:28,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:28,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:28,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559569181] [2022-01-18 01:12:28,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559569181] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:12:28,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115865953] [2022-01-18 01:12:28,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:12:28,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:12:28,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:12:28,596 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) [2022-01-18 01:12:28,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 01:12:28,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:12:28,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:12:28,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-18 01:12:28,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:12:28,773 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 [2022-01-18 01:12:28,831 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:12:28,832 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 [2022-01-18 01:12:29,120 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 [2022-01-18 01:12:29,432 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:12:29,433 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 [2022-01-18 01:12:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:29,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:12:29,703 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2280 (Array Int Int)) (~get2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2280))) (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 [2022-01-18 01:12:29,745 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-01-18 01:12:29,746 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 [2022-01-18 01:12:29,761 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:12:29,761 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 [2022-01-18 01:12:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:30,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115865953] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:12:30,545 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:12:30,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 43 [2022-01-18 01:12:30,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606664796] [2022-01-18 01:12:30,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:12:30,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 01:12:30,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:30,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 01:12:30,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1549, Unknown=1, NotChecked=80, Total=1806 [2022-01-18 01:12:30,546 INFO L87 Difference]: Start difference. First operand 16185 states and 46497 transitions. Second operand has 43 states, 43 states have (on average 8.511627906976743) internal successors, (366), 43 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:33,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:33,387 INFO L93 Difference]: Finished difference Result 43909 states and 127124 transitions. [2022-01-18 01:12:33,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 01:12:33,388 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 8.511627906976743) internal successors, (366), 43 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have 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 [2022-01-18 01:12:33,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:33,474 INFO L225 Difference]: With dead ends: 43909 [2022-01-18 01:12:33,474 INFO L226 Difference]: Without dead ends: 43909 [2022-01-18 01:12:33,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 337 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1813, Invalid=7310, Unknown=1, NotChecked=188, Total=9312 [2022-01-18 01:12:33,475 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 3086 mSDsluCounter, 8193 mSDsCounter, 0 mSdLazyCounter, 2614 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3086 SdHoareTripleChecker+Valid, 8489 SdHoareTripleChecker+Invalid, 3792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1146 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:33,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3086 Valid, 8489 Invalid, 3792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2614 Invalid, 0 Unknown, 1146 Unchecked, 1.0s Time] [2022-01-18 01:12:33,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43909 states. [2022-01-18 01:12:33,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43909 to 18169. [2022-01-18 01:12:33,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18169 states, 18168 states have (on average 2.884907529722589) internal successors, (52413), 18168 states have internal predecessors, (52413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18169 states to 18169 states and 52413 transitions. [2022-01-18 01:12:33,913 INFO L78 Accepts]: Start accepts. Automaton has 18169 states and 52413 transitions. Word has length 177 [2022-01-18 01:12:33,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:33,913 INFO L470 AbstractCegarLoop]: Abstraction has 18169 states and 52413 transitions. [2022-01-18 01:12:33,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 8.511627906976743) internal successors, (366), 43 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:33,913 INFO L276 IsEmpty]: Start isEmpty. Operand 18169 states and 52413 transitions. [2022-01-18 01:12:33,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:33,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:33,938 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] [2022-01-18 01:12:33,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 01:12:34,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-01-18 01:12:34,138 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:34,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:34,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1955471522, now seen corresponding path program 25 times [2022-01-18 01:12:34,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:34,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846230922] [2022-01-18 01:12:34,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:34,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:34,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:34,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846230922] [2022-01-18 01:12:34,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846230922] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:34,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:34,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:12:34,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294583385] [2022-01-18 01:12:34,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:34,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:12:34,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:34,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:12:34,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:12:34,622 INFO L87 Difference]: Start difference. First operand 18169 states and 52413 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) [2022-01-18 01:12:35,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:35,505 INFO L93 Difference]: Finished difference Result 27318 states and 79032 transitions. [2022-01-18 01:12:35,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:12:35,505 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 [2022-01-18 01:12:35,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:35,557 INFO L225 Difference]: With dead ends: 27318 [2022-01-18 01:12:35,557 INFO L226 Difference]: Without dead ends: 27318 [2022-01-18 01:12:35,557 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 [2022-01-18 01:12:35,558 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1142 mSDsluCounter, 3481 mSDsCounter, 0 mSdLazyCounter, 1206 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:35,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 3759 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:12:35,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27318 states. [2022-01-18 01:12:35,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27318 to 18169. [2022-01-18 01:12:35,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18169 states, 18168 states have (on average 2.8844671950682517) internal successors, (52405), 18168 states have internal predecessors, (52405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18169 states to 18169 states and 52405 transitions. [2022-01-18 01:12:35,947 INFO L78 Accepts]: Start accepts. Automaton has 18169 states and 52405 transitions. Word has length 177 [2022-01-18 01:12:35,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:35,947 INFO L470 AbstractCegarLoop]: Abstraction has 18169 states and 52405 transitions. [2022-01-18 01:12:35,947 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) [2022-01-18 01:12:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand 18169 states and 52405 transitions. [2022-01-18 01:12:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:35,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:35,971 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:35,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-18 01:12:35,971 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:35,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:35,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1767591432, now seen corresponding path program 25 times [2022-01-18 01:12:35,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:35,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71254316] [2022-01-18 01:12:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:35,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:36,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:36,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71254316] [2022-01-18 01:12:36,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71254316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:36,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:36,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:12:36,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621390293] [2022-01-18 01:12:36,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:36,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:12:36,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:36,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:12:36,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:12:36,385 INFO L87 Difference]: Start difference. First operand 18169 states and 52405 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) [2022-01-18 01:12:37,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:37,166 INFO L93 Difference]: Finished difference Result 27268 states and 78922 transitions. [2022-01-18 01:12:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:12:37,166 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 [2022-01-18 01:12:37,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:37,218 INFO L225 Difference]: With dead ends: 27268 [2022-01-18 01:12:37,218 INFO L226 Difference]: Without dead ends: 27268 [2022-01-18 01:12:37,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=399, Invalid=1493, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 01:12:37,219 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1247 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:37,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1247 Valid, 3119 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:12:37,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27268 states. [2022-01-18 01:12:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27268 to 18177. [2022-01-18 01:12:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18177 states, 18176 states have (on average 2.8844080105633805) internal successors, (52427), 18176 states have internal predecessors, (52427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18177 states to 18177 states and 52427 transitions. [2022-01-18 01:12:37,526 INFO L78 Accepts]: Start accepts. Automaton has 18177 states and 52427 transitions. Word has length 177 [2022-01-18 01:12:37,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:37,526 INFO L470 AbstractCegarLoop]: Abstraction has 18177 states and 52427 transitions. [2022-01-18 01:12:37,526 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) [2022-01-18 01:12:37,527 INFO L276 IsEmpty]: Start isEmpty. Operand 18177 states and 52427 transitions. [2022-01-18 01:12:37,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:37,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:37,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:37,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-18 01:12:37,552 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:37,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:37,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1131634966, now seen corresponding path program 27 times [2022-01-18 01:12:37,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:37,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143259731] [2022-01-18 01:12:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:37,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:37,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:37,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143259731] [2022-01-18 01:12:37,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143259731] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:37,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:37,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:12:37,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864282000] [2022-01-18 01:12:37,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:37,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:12:37,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:37,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:12:37,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:12:37,989 INFO L87 Difference]: Start difference. First operand 18177 states and 52427 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) [2022-01-18 01:12:38,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:38,896 INFO L93 Difference]: Finished difference Result 26690 states and 77154 transitions. [2022-01-18 01:12:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 01:12:38,896 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 [2022-01-18 01:12:38,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:38,947 INFO L225 Difference]: With dead ends: 26690 [2022-01-18 01:12:38,947 INFO L226 Difference]: Without dead ends: 26690 [2022-01-18 01:12:38,948 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 [2022-01-18 01:12:38,948 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 1307 mSDsluCounter, 3169 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:38,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 3450 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:12:38,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26690 states. [2022-01-18 01:12:39,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26690 to 18153. [2022-01-18 01:12:39,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18153 states, 18152 states have (on average 2.8837042750110182) internal successors, (52345), 18152 states have internal predecessors, (52345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:39,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18153 states to 18153 states and 52345 transitions. [2022-01-18 01:12:39,252 INFO L78 Accepts]: Start accepts. Automaton has 18153 states and 52345 transitions. Word has length 177 [2022-01-18 01:12:39,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:39,252 INFO L470 AbstractCegarLoop]: Abstraction has 18153 states and 52345 transitions. [2022-01-18 01:12:39,252 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) [2022-01-18 01:12:39,252 INFO L276 IsEmpty]: Start isEmpty. Operand 18153 states and 52345 transitions. [2022-01-18 01:12:39,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:39,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:39,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:39,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-18 01:12:39,277 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:39,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:39,278 INFO L85 PathProgramCache]: Analyzing trace with hash -668060224, now seen corresponding path program 19 times [2022-01-18 01:12:39,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:39,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350089988] [2022-01-18 01:12:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:39,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:39,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:39,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350089988] [2022-01-18 01:12:39,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350089988] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:39,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:39,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:12:39,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516261290] [2022-01-18 01:12:39,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:39,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:12:39,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:39,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:12:39,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:12:39,705 INFO L87 Difference]: Start difference. First operand 18153 states and 52345 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) [2022-01-18 01:12:40,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:40,585 INFO L93 Difference]: Finished difference Result 26834 states and 77558 transitions. [2022-01-18 01:12:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 01:12:40,586 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 [2022-01-18 01:12:40,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:40,638 INFO L225 Difference]: With dead ends: 26834 [2022-01-18 01:12:40,638 INFO L226 Difference]: Without dead ends: 26834 [2022-01-18 01:12:40,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=491, Invalid=1671, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 01:12:40,639 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1179 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:40,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 3354 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:12:40,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26834 states. [2022-01-18 01:12:40,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26834 to 18161. [2022-01-18 01:12:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18161 states, 18160 states have (on average 2.8823237885462554) internal successors, (52343), 18160 states have internal predecessors, (52343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18161 states to 18161 states and 52343 transitions. [2022-01-18 01:12:40,941 INFO L78 Accepts]: Start accepts. Automaton has 18161 states and 52343 transitions. Word has length 177 [2022-01-18 01:12:40,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:40,941 INFO L470 AbstractCegarLoop]: Abstraction has 18161 states and 52343 transitions. [2022-01-18 01:12:40,941 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) [2022-01-18 01:12:40,941 INFO L276 IsEmpty]: Start isEmpty. Operand 18161 states and 52343 transitions. [2022-01-18 01:12:40,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:40,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:40,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:40,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-18 01:12:40,966 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:40,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:40,966 INFO L85 PathProgramCache]: Analyzing trace with hash 127700748, now seen corresponding path program 26 times [2022-01-18 01:12:40,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:40,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873065364] [2022-01-18 01:12:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:40,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:41,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:41,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873065364] [2022-01-18 01:12:41,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873065364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:41,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:41,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:12:41,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280401037] [2022-01-18 01:12:41,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:41,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:12:41,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:12:41,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:12:41,371 INFO L87 Difference]: Start difference. First operand 18161 states and 52343 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) [2022-01-18 01:12:42,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:42,339 INFO L93 Difference]: Finished difference Result 27076 states and 78170 transitions. [2022-01-18 01:12:42,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 01:12:42,339 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 [2022-01-18 01:12:42,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:42,390 INFO L225 Difference]: With dead ends: 27076 [2022-01-18 01:12:42,390 INFO L226 Difference]: Without dead ends: 27076 [2022-01-18 01:12:42,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=553, Invalid=1897, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 01:12:42,390 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 1297 mSDsluCounter, 2958 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 3255 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:42,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1297 Valid, 3255 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:12:42,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27076 states. [2022-01-18 01:12:42,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27076 to 18225. [2022-01-18 01:12:42,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18225 states, 18224 states have (on average 2.8818590869183494) internal successors, (52519), 18224 states have internal predecessors, (52519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:42,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18225 states to 18225 states and 52519 transitions. [2022-01-18 01:12:42,780 INFO L78 Accepts]: Start accepts. Automaton has 18225 states and 52519 transitions. Word has length 177 [2022-01-18 01:12:42,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:42,781 INFO L470 AbstractCegarLoop]: Abstraction has 18225 states and 52519 transitions. [2022-01-18 01:12:42,781 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) [2022-01-18 01:12:42,781 INFO L276 IsEmpty]: Start isEmpty. Operand 18225 states and 52519 transitions. [2022-01-18 01:12:42,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:42,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:42,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:42,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-18 01:12:42,806 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:42,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:42,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1802426568, now seen corresponding path program 27 times [2022-01-18 01:12:42,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:42,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006424255] [2022-01-18 01:12:42,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:42,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:43,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:43,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:43,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006424255] [2022-01-18 01:12:43,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006424255] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:12:43,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653301851] [2022-01-18 01:12:43,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:12:43,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:12:43,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:12:43,182 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) [2022-01-18 01:12:43,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 01:12:43,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 01:12:43,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:12:43,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-18 01:12:43,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:12:43,363 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 [2022-01-18 01:12:43,409 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:12:43,410 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 [2022-01-18 01:12:43,673 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 [2022-01-18 01:12:43,884 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-18 01:12:43,884 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 [2022-01-18 01:12:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:43,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:12:44,150 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get2~0.base Int) (v_ArrVal_2394 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2394))) (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 (= (select .cse1 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))) |c_thread1Thread1of1ForFork0_#t~mem2|)))))) is different from false [2022-01-18 01:12:44,188 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-01-18 01:12:44,188 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 [2022-01-18 01:12:44,204 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:12:44,204 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 [2022-01-18 01:12:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:45,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653301851] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:12:45,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:12:45,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 40 [2022-01-18 01:12:45,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924947621] [2022-01-18 01:12:45,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:12:45,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 01:12:45,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:45,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 01:12:45,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1349, Unknown=1, NotChecked=74, Total=1560 [2022-01-18 01:12:45,037 INFO L87 Difference]: Start difference. First operand 18225 states and 52519 transitions. Second operand has 40 states, 40 states have (on average 7.9) internal successors, (316), 40 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) [2022-01-18 01:12:46,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:46,743 INFO L93 Difference]: Finished difference Result 27561 states and 79041 transitions. [2022-01-18 01:12:46,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 01:12:46,743 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 7.9) internal successors, (316), 40 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 [2022-01-18 01:12:46,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:46,795 INFO L225 Difference]: With dead ends: 27561 [2022-01-18 01:12:46,795 INFO L226 Difference]: Without dead ends: 27561 [2022-01-18 01:12:46,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=747, Invalid=5107, Unknown=2, NotChecked=150, Total=6006 [2022-01-18 01:12:46,796 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 1055 mSDsluCounter, 8581 mSDsCounter, 0 mSdLazyCounter, 2298 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 8792 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 536 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:46,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1055 Valid, 8792 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2298 Invalid, 0 Unknown, 536 Unchecked, 0.8s Time] [2022-01-18 01:12:46,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27561 states. [2022-01-18 01:12:47,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27561 to 18489. [2022-01-18 01:12:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18489 states, 18488 states have (on average 2.883870618779749) internal successors, (53317), 18488 states have internal predecessors, (53317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18489 states to 18489 states and 53317 transitions. [2022-01-18 01:12:47,124 INFO L78 Accepts]: Start accepts. Automaton has 18489 states and 53317 transitions. Word has length 177 [2022-01-18 01:12:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:47,125 INFO L470 AbstractCegarLoop]: Abstraction has 18489 states and 53317 transitions. [2022-01-18 01:12:47,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 7.9) internal successors, (316), 40 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) [2022-01-18 01:12:47,125 INFO L276 IsEmpty]: Start isEmpty. Operand 18489 states and 53317 transitions. [2022-01-18 01:12:47,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:47,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:47,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:47,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-01-18 01:12:47,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:12:47,350 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:47,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:47,350 INFO L85 PathProgramCache]: Analyzing trace with hash 434772476, now seen corresponding path program 28 times [2022-01-18 01:12:47,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:47,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299232738] [2022-01-18 01:12:47,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:47,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:47,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:47,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299232738] [2022-01-18 01:12:47,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299232738] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:12:47,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769278653] [2022-01-18 01:12:47,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:12:47,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:12:47,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:12:47,782 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) [2022-01-18 01:12:47,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 01:12:47,928 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:12:47,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:12:47,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 01:12:47,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:12:48,532 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 [2022-01-18 01:12:48,730 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 [2022-01-18 01:12:48,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:12:48,886 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 [2022-01-18 01:12:49,120 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-18 01:12:49,120 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 [2022-01-18 01:12:49,180 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:12:49,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:12:49,813 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:12:49,813 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 93 treesize of output 57 [2022-01-18 01:12:49,819 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-01-18 01:12:49,819 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 868 treesize of output 756 [2022-01-18 01:12:49,831 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:12:49,831 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 756 treesize of output 684 [2022-01-18 01:12:49,843 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:12:49,843 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 676 treesize of output 628 [2022-01-18 01:12:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:12:50,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769278653] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:12:50,320 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:12:50,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 21] total 62 [2022-01-18 01:12:50,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070097124] [2022-01-18 01:12:50,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:12:50,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-18 01:12:50,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:50,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-18 01:12:50,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=3263, Unknown=122, NotChecked=0, Total=3782 [2022-01-18 01:12:50,321 INFO L87 Difference]: Start difference. First operand 18489 states and 53317 transitions. Second operand has 62 states, 62 states have (on average 6.645161290322581) internal successors, (412), 62 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) [2022-01-18 01:12:57,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:57,150 INFO L93 Difference]: Finished difference Result 52326 states and 150846 transitions. [2022-01-18 01:12:57,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 01:12:57,150 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 6.645161290322581) internal successors, (412), 62 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 [2022-01-18 01:12:57,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:57,260 INFO L225 Difference]: With dead ends: 52326 [2022-01-18 01:12:57,261 INFO L226 Difference]: Without dead ends: 52326 [2022-01-18 01:12:57,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 318 SyntacticMatches, 14 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4309 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=3329, Invalid=12299, Unknown=122, NotChecked=0, Total=15750 [2022-01-18 01:12:57,262 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 4174 mSDsluCounter, 10436 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4174 SdHoareTripleChecker+Valid, 10626 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 618 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:57,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4174 Valid, 10626 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2718 Invalid, 0 Unknown, 618 Unchecked, 1.1s Time] [2022-01-18 01:12:57,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52326 states. [2022-01-18 01:12:57,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52326 to 16087. [2022-01-18 01:12:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16087 states, 16086 states have (on average 2.86976252642049) internal successors, (46163), 16086 states have internal predecessors, (46163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:57,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16087 states to 16087 states and 46163 transitions. [2022-01-18 01:12:57,765 INFO L78 Accepts]: Start accepts. Automaton has 16087 states and 46163 transitions. Word has length 177 [2022-01-18 01:12:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:57,765 INFO L470 AbstractCegarLoop]: Abstraction has 16087 states and 46163 transitions. [2022-01-18 01:12:57,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 6.645161290322581) internal successors, (412), 62 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) [2022-01-18 01:12:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 16087 states and 46163 transitions. [2022-01-18 01:12:57,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:57,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:57,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:12:57,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 01:12:57,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:12:57,987 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:57,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:57,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1276711498, now seen corresponding path program 26 times [2022-01-18 01:12:57,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:57,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11652529] [2022-01-18 01:12:57,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:57,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:12:58,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:12:58,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:12:58,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11652529] [2022-01-18 01:12:58,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11652529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:12:58,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:12:58,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:12:58,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974043886] [2022-01-18 01:12:58,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:12:58,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:12:58,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:12:58,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:12:58,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:12:58,390 INFO L87 Difference]: Start difference. First operand 16087 states and 46163 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) [2022-01-18 01:12:59,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:12:59,448 INFO L93 Difference]: Finished difference Result 29457 states and 84601 transitions. [2022-01-18 01:12:59,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 01:12:59,449 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 [2022-01-18 01:12:59,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:12:59,508 INFO L225 Difference]: With dead ends: 29457 [2022-01-18 01:12:59,508 INFO L226 Difference]: Without dead ends: 29457 [2022-01-18 01:12:59,509 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 [2022-01-18 01:12:59,509 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 1381 mSDsluCounter, 3697 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 4015 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:12:59,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1381 Valid, 4015 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:12:59,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29457 states. [2022-01-18 01:12:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29457 to 16103. [2022-01-18 01:12:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16103 states, 16102 states have (on average 2.8706371879269654) internal successors, (46223), 16102 states have internal predecessors, (46223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:12:59,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16103 states to 16103 states and 46223 transitions. [2022-01-18 01:12:59,826 INFO L78 Accepts]: Start accepts. Automaton has 16103 states and 46223 transitions. Word has length 177 [2022-01-18 01:12:59,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:12:59,827 INFO L470 AbstractCegarLoop]: Abstraction has 16103 states and 46223 transitions. [2022-01-18 01:12:59,827 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) [2022-01-18 01:12:59,827 INFO L276 IsEmpty]: Start isEmpty. Operand 16103 states and 46223 transitions. [2022-01-18 01:12:59,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:12:59,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:12:59,848 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] [2022-01-18 01:12:59,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-18 01:12:59,848 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:12:59,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:12:59,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1439000424, now seen corresponding path program 27 times [2022-01-18 01:12:59,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:12:59,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102020817] [2022-01-18 01:12:59,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:12:59,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:12:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:13:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:13:00,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:13:00,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102020817] [2022-01-18 01:13:00,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102020817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:13:00,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:13:00,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:13:00,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927476635] [2022-01-18 01:13:00,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:13:00,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:13:00,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:13:00,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:13:00,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:13:00,366 INFO L87 Difference]: Start difference. First operand 16103 states and 46223 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) [2022-01-18 01:13:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:13:01,326 INFO L93 Difference]: Finished difference Result 26124 states and 75322 transitions. [2022-01-18 01:13:01,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 01:13:01,326 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 [2022-01-18 01:13:01,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:13:01,376 INFO L225 Difference]: With dead ends: 26124 [2022-01-18 01:13:01,376 INFO L226 Difference]: Without dead ends: 26124 [2022-01-18 01:13:01,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=539, Invalid=1911, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 01:13:01,377 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1226 mSDsluCounter, 3363 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 3660 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:13:01,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 3660 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:13:01,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26124 states. [2022-01-18 01:13:01,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26124 to 16111. [2022-01-18 01:13:01,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16111 states, 16110 states have (on average 2.8710738671632527) internal successors, (46253), 16110 states have internal predecessors, (46253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:13:01,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16111 states to 16111 states and 46253 transitions. [2022-01-18 01:13:01,669 INFO L78 Accepts]: Start accepts. Automaton has 16111 states and 46253 transitions. Word has length 177 [2022-01-18 01:13:01,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:13:01,669 INFO L470 AbstractCegarLoop]: Abstraction has 16111 states and 46253 transitions. [2022-01-18 01:13:01,669 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) [2022-01-18 01:13:01,670 INFO L276 IsEmpty]: Start isEmpty. Operand 16111 states and 46253 transitions. [2022-01-18 01:13:01,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:13:01,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:13:01,691 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] [2022-01-18 01:13:01,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-18 01:13:01,691 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:13:01,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:13:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash -611737924, now seen corresponding path program 28 times [2022-01-18 01:13:01,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:13:01,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192722509] [2022-01-18 01:13:01,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:13:01,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:13:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:13:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:13:02,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:13:02,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192722509] [2022-01-18 01:13:02,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192722509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:13:02,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:13:02,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:13:02,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55070209] [2022-01-18 01:13:02,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:13:02,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:13:02,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:13:02,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:13:02,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:13:02,115 INFO L87 Difference]: Start difference. First operand 16111 states and 46253 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) [2022-01-18 01:13:03,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:13:03,049 INFO L93 Difference]: Finished difference Result 25662 states and 73942 transitions. [2022-01-18 01:13:03,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 01:13:03,050 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 [2022-01-18 01:13:03,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:13:03,190 INFO L225 Difference]: With dead ends: 25662 [2022-01-18 01:13:03,190 INFO L226 Difference]: Without dead ends: 25662 [2022-01-18 01:13:03,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=531, Invalid=1821, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 01:13:03,190 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1153 mSDsluCounter, 3006 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 3298 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:13:03,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1153 Valid, 3298 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:13:03,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25662 states. [2022-01-18 01:13:03,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25662 to 16143. [2022-01-18 01:13:03,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16143 states, 16142 states have (on average 2.8708338495849337) internal successors, (46341), 16142 states have internal predecessors, (46341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:13:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16143 states to 16143 states and 46341 transitions. [2022-01-18 01:13:03,430 INFO L78 Accepts]: Start accepts. Automaton has 16143 states and 46341 transitions. Word has length 177 [2022-01-18 01:13:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:13:03,430 INFO L470 AbstractCegarLoop]: Abstraction has 16143 states and 46341 transitions. [2022-01-18 01:13:03,430 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) [2022-01-18 01:13:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand 16143 states and 46341 transitions. [2022-01-18 01:13:03,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:13:03,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:13:03,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:13:03,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-18 01:13:03,452 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:13:03,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:13:03,453 INFO L85 PathProgramCache]: Analyzing trace with hash 916905704, now seen corresponding path program 29 times [2022-01-18 01:13:03,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:13:03,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452078783] [2022-01-18 01:13:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:13:03,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:13:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:13:03,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:13:03,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:13:03,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452078783] [2022-01-18 01:13:03,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452078783] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:13:03,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475721061] [2022-01-18 01:13:03,865 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:13:03,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:13:03,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:13:03,866 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) [2022-01-18 01:13:03,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 01:13:04,017 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:13:04,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:13:04,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 69 conjunts are in the unsatisfiable core [2022-01-18 01:13:04,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:13:04,055 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 [2022-01-18 01:13:04,173 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 01:13:04,173 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 [2022-01-18 01:13:04,302 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 [2022-01-18 01:13:04,672 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 01:13:04,672 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 [2022-01-18 01:13:04,835 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 [2022-01-18 01:13:05,088 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 [2022-01-18 01:13:05,280 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2022-01-18 01:13:05,695 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 [2022-01-18 01:13:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:13:05,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:13:07,511 INFO L353 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-01-18 01:13:07,511 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 2 case distinctions, treesize of input 172 treesize of output 78 [2022-01-18 01:13:07,535 INFO L353 Elim1Store]: treesize reduction 13, result has 66.7 percent of original size [2022-01-18 01:13:07,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 877 treesize of output 782 [2022-01-18 01:13:07,554 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:13:07,554 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 [2022-01-18 01:13:07,573 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:13:07,574 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 659 treesize of output 611 [2022-01-18 01:14:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:14:07,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475721061] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:14:07,336 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:14:07,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 25] total 67 [2022-01-18 01:14:07,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804300541] [2022-01-18 01:14:07,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:14:07,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-01-18 01:14:07,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:07,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-01-18 01:14:07,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=491, Invalid=3775, Unknown=156, NotChecked=0, Total=4422 [2022-01-18 01:14:07,337 INFO L87 Difference]: Start difference. First operand 16143 states and 46341 transitions. Second operand has 67 states, 67 states have (on average 6.402985074626866) internal successors, (429), 67 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:22,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:22,161 INFO L93 Difference]: Finished difference Result 48660 states and 140773 transitions. [2022-01-18 01:14:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 01:14:22,162 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 6.402985074626866) internal successors, (429), 67 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have 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 [2022-01-18 01:14:22,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:22,259 INFO L225 Difference]: With dead ends: 48660 [2022-01-18 01:14:22,259 INFO L226 Difference]: Without dead ends: 48660 [2022-01-18 01:14:22,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 313 SyntacticMatches, 17 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 4790 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=3537, Invalid=13077, Unknown=156, NotChecked=0, Total=16770 [2022-01-18 01:14:22,261 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 3447 mSDsluCounter, 12654 mSDsCounter, 0 mSdLazyCounter, 3807 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3447 SdHoareTripleChecker+Valid, 12829 SdHoareTripleChecker+Invalid, 5202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1366 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:22,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3447 Valid, 12829 Invalid, 5202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3807 Invalid, 0 Unknown, 1366 Unchecked, 1.7s Time] [2022-01-18 01:14:22,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48660 states. [2022-01-18 01:14:22,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48660 to 17715. [2022-01-18 01:14:22,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17715 states, 17714 states have (on average 2.8843287794964434) internal successors, (51093), 17714 states have internal predecessors, (51093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:22,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17715 states to 17715 states and 51093 transitions. [2022-01-18 01:14:22,714 INFO L78 Accepts]: Start accepts. Automaton has 17715 states and 51093 transitions. Word has length 177 [2022-01-18 01:14:22,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:22,714 INFO L470 AbstractCegarLoop]: Abstraction has 17715 states and 51093 transitions. [2022-01-18 01:14:22,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 6.402985074626866) internal successors, (429), 67 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:22,714 INFO L276 IsEmpty]: Start isEmpty. Operand 17715 states and 51093 transitions. [2022-01-18 01:14:22,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:22,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:22,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:22,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 01:14:22,938 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,SelfDestructingSolverStorable134 [2022-01-18 01:14:22,938 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:22,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:22,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1159624690, now seen corresponding path program 28 times [2022-01-18 01:14:22,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:22,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955360229] [2022-01-18 01:14:22,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:22,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:23,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:23,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955360229] [2022-01-18 01:14:23,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955360229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:23,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:23,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:14:23,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333583419] [2022-01-18 01:14:23,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:23,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:14:23,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:23,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:14:23,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:14:23,456 INFO L87 Difference]: Start difference. First operand 17715 states and 51093 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) [2022-01-18 01:14:24,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:24,372 INFO L93 Difference]: Finished difference Result 27358 states and 78962 transitions. [2022-01-18 01:14:24,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 01:14:24,373 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 [2022-01-18 01:14:24,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:24,424 INFO L225 Difference]: With dead ends: 27358 [2022-01-18 01:14:24,425 INFO L226 Difference]: Without dead ends: 27358 [2022-01-18 01:14:24,425 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 [2022-01-18 01:14:24,425 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 1288 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1288 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:24,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1288 Valid, 3206 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:14:24,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27358 states. [2022-01-18 01:14:24,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27358 to 17731. [2022-01-18 01:14:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17731 states, 17730 states have (on average 2.885109983079526) internal successors, (51153), 17730 states have internal predecessors, (51153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:24,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17731 states to 17731 states and 51153 transitions. [2022-01-18 01:14:24,736 INFO L78 Accepts]: Start accepts. Automaton has 17731 states and 51153 transitions. Word has length 177 [2022-01-18 01:14:24,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:24,736 INFO L470 AbstractCegarLoop]: Abstraction has 17731 states and 51153 transitions. [2022-01-18 01:14:24,736 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) [2022-01-18 01:14:24,736 INFO L276 IsEmpty]: Start isEmpty. Operand 17731 states and 51153 transitions. [2022-01-18 01:14:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:24,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:24,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:24,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-01-18 01:14:24,760 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:24,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:24,760 INFO L85 PathProgramCache]: Analyzing trace with hash 971744600, now seen corresponding path program 29 times [2022-01-18 01:14:24,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:24,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253340238] [2022-01-18 01:14:24,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:24,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:25,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:25,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253340238] [2022-01-18 01:14:25,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253340238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:25,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:25,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:14:25,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791457335] [2022-01-18 01:14:25,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:25,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:14:25,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:25,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:14:25,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:14:25,211 INFO L87 Difference]: Start difference. First operand 17731 states and 51153 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) [2022-01-18 01:14:26,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:26,062 INFO L93 Difference]: Finished difference Result 27178 states and 78460 transitions. [2022-01-18 01:14:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 01:14:26,062 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 [2022-01-18 01:14:26,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:26,114 INFO L225 Difference]: With dead ends: 27178 [2022-01-18 01:14:26,114 INFO L226 Difference]: Without dead ends: 27178 [2022-01-18 01:14:26,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=455, Invalid=1615, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 01:14:26,115 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 1129 mSDsluCounter, 2999 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 3288 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:26,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1129 Valid, 3288 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:14:26,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27178 states. [2022-01-18 01:14:26,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27178 to 17739. [2022-01-18 01:14:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17739 states, 17738 states have (on average 2.8850490472432067) internal successors, (51175), 17738 states have internal predecessors, (51175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:26,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17739 states to 17739 states and 51175 transitions. [2022-01-18 01:14:26,578 INFO L78 Accepts]: Start accepts. Automaton has 17739 states and 51175 transitions. Word has length 177 [2022-01-18 01:14:26,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:26,579 INFO L470 AbstractCegarLoop]: Abstraction has 17739 states and 51175 transitions. [2022-01-18 01:14:26,579 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) [2022-01-18 01:14:26,579 INFO L276 IsEmpty]: Start isEmpty. Operand 17739 states and 51175 transitions. [2022-01-18 01:14:26,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:26,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:26,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:26,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-01-18 01:14:26,600 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:26,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:26,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1927481798, now seen corresponding path program 30 times [2022-01-18 01:14:26,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:26,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499875266] [2022-01-18 01:14:26,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:26,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:27,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:27,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499875266] [2022-01-18 01:14:27,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499875266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:27,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:27,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:14:27,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725962721] [2022-01-18 01:14:27,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:27,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:14:27,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:27,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:14:27,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:14:27,010 INFO L87 Difference]: Start difference. First operand 17739 states and 51175 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) [2022-01-18 01:14:27,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:27,894 INFO L93 Difference]: Finished difference Result 26548 states and 76692 transitions. [2022-01-18 01:14:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 01:14:27,894 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 [2022-01-18 01:14:27,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:27,944 INFO L225 Difference]: With dead ends: 26548 [2022-01-18 01:14:27,944 INFO L226 Difference]: Without dead ends: 26548 [2022-01-18 01:14:27,945 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 [2022-01-18 01:14:27,945 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1287 mSDsluCounter, 2980 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:27,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1287 Valid, 3258 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:14:27,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26548 states. [2022-01-18 01:14:28,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26548 to 17731. [2022-01-18 01:14:28,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17731 states, 17730 states have (on average 2.885109983079526) internal successors, (51153), 17730 states have internal predecessors, (51153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:28,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17731 states to 17731 states and 51153 transitions. [2022-01-18 01:14:28,244 INFO L78 Accepts]: Start accepts. Automaton has 17731 states and 51153 transitions. Word has length 177 [2022-01-18 01:14:28,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:28,245 INFO L470 AbstractCegarLoop]: Abstraction has 17731 states and 51153 transitions. [2022-01-18 01:14:28,245 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) [2022-01-18 01:14:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 17731 states and 51153 transitions. [2022-01-18 01:14:28,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:28,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:28,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:28,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-01-18 01:14:28,269 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:28,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:28,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1463907056, now seen corresponding path program 20 times [2022-01-18 01:14:28,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:28,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239650210] [2022-01-18 01:14:28,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:28,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:28,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:28,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239650210] [2022-01-18 01:14:28,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239650210] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:28,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:28,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:14:28,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780652529] [2022-01-18 01:14:28,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:28,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:14:28,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:28,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:14:28,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:14:28,700 INFO L87 Difference]: Start difference. First operand 17731 states and 51153 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) [2022-01-18 01:14:29,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:29,604 INFO L93 Difference]: Finished difference Result 26764 states and 77318 transitions. [2022-01-18 01:14:29,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 01:14:29,604 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 [2022-01-18 01:14:29,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:29,655 INFO L225 Difference]: With dead ends: 26764 [2022-01-18 01:14:29,655 INFO L226 Difference]: Without dead ends: 26764 [2022-01-18 01:14:29,656 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 [2022-01-18 01:14:29,656 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 1303 mSDsluCounter, 3288 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:29,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 3578 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:14:29,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26764 states. [2022-01-18 01:14:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26764 to 17691. [2022-01-18 01:14:29,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17691 states, 17690 states have (on average 2.883154324477106) internal successors, (51003), 17690 states have internal predecessors, (51003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:29,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17691 states to 17691 states and 51003 transitions. [2022-01-18 01:14:29,959 INFO L78 Accepts]: Start accepts. Automaton has 17691 states and 51003 transitions. Word has length 177 [2022-01-18 01:14:29,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:29,959 INFO L470 AbstractCegarLoop]: Abstraction has 17691 states and 51003 transitions. [2022-01-18 01:14:29,959 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) [2022-01-18 01:14:29,959 INFO L276 IsEmpty]: Start isEmpty. Operand 17691 states and 51003 transitions. [2022-01-18 01:14:29,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:29,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:29,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:29,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-01-18 01:14:29,984 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:29,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:29,984 INFO L85 PathProgramCache]: Analyzing trace with hash 100811472, now seen corresponding path program 29 times [2022-01-18 01:14:29,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:29,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704214960] [2022-01-18 01:14:29,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:29,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:30,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:30,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:30,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704214960] [2022-01-18 01:14:30,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704214960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:30,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:30,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:14:30,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435260620] [2022-01-18 01:14:30,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:30,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:14:30,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:30,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:14:30,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:14:30,475 INFO L87 Difference]: Start difference. First operand 17691 states and 51003 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) [2022-01-18 01:14:31,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:31,391 INFO L93 Difference]: Finished difference Result 27270 states and 78618 transitions. [2022-01-18 01:14:31,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 01:14:31,392 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 [2022-01-18 01:14:31,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:31,442 INFO L225 Difference]: With dead ends: 27270 [2022-01-18 01:14:31,442 INFO L226 Difference]: Without dead ends: 27270 [2022-01-18 01:14:31,443 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 [2022-01-18 01:14:31,443 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1198 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:31,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1198 Valid, 3070 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:14:31,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27270 states. [2022-01-18 01:14:31,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27270 to 17691. [2022-01-18 01:14:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17691 states, 17690 states have (on average 2.883154324477106) internal successors, (51003), 17690 states have internal predecessors, (51003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17691 states to 17691 states and 51003 transitions. [2022-01-18 01:14:31,751 INFO L78 Accepts]: Start accepts. Automaton has 17691 states and 51003 transitions. Word has length 177 [2022-01-18 01:14:31,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:31,751 INFO L470 AbstractCegarLoop]: Abstraction has 17691 states and 51003 transitions. [2022-01-18 01:14:31,751 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) [2022-01-18 01:14:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 17691 states and 51003 transitions. [2022-01-18 01:14:31,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:31,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:31,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:31,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-01-18 01:14:31,775 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:31,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash 453993684, now seen corresponding path program 30 times [2022-01-18 01:14:31,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:31,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901721990] [2022-01-18 01:14:31,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:31,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:32,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:32,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901721990] [2022-01-18 01:14:32,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901721990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:32,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:32,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:14:32,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906027634] [2022-01-18 01:14:32,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:32,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:14:32,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:32,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:14:32,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:14:32,233 INFO L87 Difference]: Start difference. First operand 17691 states and 51003 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) [2022-01-18 01:14:33,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:33,138 INFO L93 Difference]: Finished difference Result 26490 states and 76320 transitions. [2022-01-18 01:14:33,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 01:14:33,138 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 [2022-01-18 01:14:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:33,187 INFO L225 Difference]: With dead ends: 26490 [2022-01-18 01:14:33,188 INFO L226 Difference]: Without dead ends: 26490 [2022-01-18 01:14:33,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=503, Invalid=1753, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 01:14:33,188 INFO L933 BasicCegarLoop]: 338 mSDtfsCounter, 1144 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:33,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 3137 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:14:33,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26490 states. [2022-01-18 01:14:33,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26490 to 17723. [2022-01-18 01:14:33,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17723 states, 17722 states have (on average 2.882913892337208) internal successors, (51091), 17722 states have internal predecessors, (51091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17723 states to 17723 states and 51091 transitions. [2022-01-18 01:14:33,645 INFO L78 Accepts]: Start accepts. Automaton has 17723 states and 51091 transitions. Word has length 177 [2022-01-18 01:14:33,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:33,645 INFO L470 AbstractCegarLoop]: Abstraction has 17723 states and 51091 transitions. [2022-01-18 01:14:33,645 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) [2022-01-18 01:14:33,645 INFO L276 IsEmpty]: Start isEmpty. Operand 17723 states and 51091 transitions. [2022-01-18 01:14:33,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:33,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:33,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:33,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-01-18 01:14:33,668 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:33,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:33,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1476133632, now seen corresponding path program 31 times [2022-01-18 01:14:33,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:33,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762589916] [2022-01-18 01:14:33,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:33,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:34,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:34,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762589916] [2022-01-18 01:14:34,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762589916] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:14:34,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10332425] [2022-01-18 01:14:34,075 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:14:34,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:14:34,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:14:34,076 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) [2022-01-18 01:14:34,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 01:14:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:34,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-18 01:14:34,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:14:34,276 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 [2022-01-18 01:14:34,333 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:14:34,334 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 [2022-01-18 01:14:34,616 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 [2022-01-18 01:14:34,834 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-18 01:14:34,834 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 [2022-01-18 01:14:34,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:34,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:14:35,080 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2648 (Array Int Int)) (~get2~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2648))) (let ((.cse0 (select .cse1 ~get2~0.base))) (or (= (select .cse0 c_~get2~0.offset) (select (select .cse1 c_~get1~0.base) c_~get1~0.offset)) (not (= (select .cse0 (+ c_~get2~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4))) |c_thread1Thread1of1ForFork0_#t~mem2|)))))) is different from false [2022-01-18 01:14:35,122 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-01-18 01:14:35,122 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 [2022-01-18 01:14:35,136 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:14:35,136 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 [2022-01-18 01:14:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:35,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10332425] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:14:35,621 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:14:35,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 16] total 41 [2022-01-18 01:14:35,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594605339] [2022-01-18 01:14:35,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:14:35,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 01:14:35,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:35,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 01:14:35,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1383, Unknown=1, NotChecked=76, Total=1640 [2022-01-18 01:14:35,622 INFO L87 Difference]: Start difference. First operand 17723 states and 51091 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) [2022-01-18 01:14:37,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:37,508 INFO L93 Difference]: Finished difference Result 28326 states and 81564 transitions. [2022-01-18 01:14:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 01:14:37,509 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 [2022-01-18 01:14:37,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:37,567 INFO L225 Difference]: With dead ends: 28326 [2022-01-18 01:14:37,567 INFO L226 Difference]: Without dead ends: 28326 [2022-01-18 01:14:37,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 347 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 1351 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1274, Invalid=5209, Unknown=1, NotChecked=158, Total=6642 [2022-01-18 01:14:37,568 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 2145 mSDsluCounter, 5481 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 5791 SdHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 853 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:37,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2145 Valid, 5791 Invalid, 2787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1910 Invalid, 0 Unknown, 853 Unchecked, 0.7s Time] [2022-01-18 01:14:37,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28326 states. [2022-01-18 01:14:37,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28326 to 17471. [2022-01-18 01:14:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17471 states, 17470 states have (on average 2.883514596451059) internal successors, (50375), 17470 states have internal predecessors, (50375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:37,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17471 states to 17471 states and 50375 transitions. [2022-01-18 01:14:37,888 INFO L78 Accepts]: Start accepts. Automaton has 17471 states and 50375 transitions. Word has length 177 [2022-01-18 01:14:37,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:37,889 INFO L470 AbstractCegarLoop]: Abstraction has 17471 states and 50375 transitions. [2022-01-18 01:14:37,889 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) [2022-01-18 01:14:37,889 INFO L276 IsEmpty]: Start isEmpty. Operand 17471 states and 50375 transitions. [2022-01-18 01:14:37,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:37,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:37,912 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] [2022-01-18 01:14:37,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-01-18 01:14:38,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:14:38,127 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:38,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:38,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1595530710, now seen corresponding path program 30 times [2022-01-18 01:14:38,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:38,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63634680] [2022-01-18 01:14:38,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:38,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:38,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:38,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:38,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63634680] [2022-01-18 01:14:38,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63634680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:38,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:38,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:14:38,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232555817] [2022-01-18 01:14:38,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:38,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:14:38,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:38,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:14:38,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:14:38,549 INFO L87 Difference]: Start difference. First operand 17471 states and 50375 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) [2022-01-18 01:14:39,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:39,402 INFO L93 Difference]: Finished difference Result 26426 states and 76160 transitions. [2022-01-18 01:14:39,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 01:14:39,402 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 [2022-01-18 01:14:39,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:39,451 INFO L225 Difference]: With dead ends: 26426 [2022-01-18 01:14:39,451 INFO L226 Difference]: Without dead ends: 26426 [2022-01-18 01:14:39,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=465, Invalid=1697, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 01:14:39,452 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 1121 mSDsluCounter, 2830 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:39,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 3101 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:14:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26426 states. [2022-01-18 01:14:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26426 to 17487. [2022-01-18 01:14:39,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17487 states, 17486 states have (on average 2.8843074459567655) internal successors, (50435), 17486 states have internal predecessors, (50435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17487 states to 17487 states and 50435 transitions. [2022-01-18 01:14:39,771 INFO L78 Accepts]: Start accepts. Automaton has 17487 states and 50435 transitions. Word has length 177 [2022-01-18 01:14:39,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:39,771 INFO L470 AbstractCegarLoop]: Abstraction has 17487 states and 50435 transitions. [2022-01-18 01:14:39,771 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) [2022-01-18 01:14:39,771 INFO L276 IsEmpty]: Start isEmpty. Operand 17487 states and 50435 transitions. [2022-01-18 01:14:39,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:39,795 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:39,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:39,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-18 01:14:39,795 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:39,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:39,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1783410800, now seen corresponding path program 32 times [2022-01-18 01:14:39,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:39,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102296907] [2022-01-18 01:14:39,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:39,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:40,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:40,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102296907] [2022-01-18 01:14:40,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102296907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:40,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:40,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:14:40,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350624168] [2022-01-18 01:14:40,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:40,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:14:40,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:40,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:14:40,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:14:40,251 INFO L87 Difference]: Start difference. First operand 17487 states and 50435 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) [2022-01-18 01:14:41,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:41,084 INFO L93 Difference]: Finished difference Result 26246 states and 75658 transitions. [2022-01-18 01:14:41,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 01:14:41,085 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 [2022-01-18 01:14:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:41,134 INFO L225 Difference]: With dead ends: 26246 [2022-01-18 01:14:41,134 INFO L226 Difference]: Without dead ends: 26246 [2022-01-18 01:14:41,135 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 [2022-01-18 01:14:41,135 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1249 mSDsluCounter, 2625 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:41,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 2888 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:14:41,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26246 states. [2022-01-18 01:14:41,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26246 to 17495. [2022-01-18 01:14:41,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17495 states, 17494 states have (on average 2.884246027209329) internal successors, (50457), 17494 states have internal predecessors, (50457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:41,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17495 states to 17495 states and 50457 transitions. [2022-01-18 01:14:41,432 INFO L78 Accepts]: Start accepts. Automaton has 17495 states and 50457 transitions. Word has length 177 [2022-01-18 01:14:41,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:41,432 INFO L470 AbstractCegarLoop]: Abstraction has 17495 states and 50457 transitions. [2022-01-18 01:14:41,433 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) [2022-01-18 01:14:41,433 INFO L276 IsEmpty]: Start isEmpty. Operand 17495 states and 50457 transitions. [2022-01-18 01:14:41,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:41,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:41,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:41,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-01-18 01:14:41,456 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:41,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:41,456 INFO L85 PathProgramCache]: Analyzing trace with hash -387669902, now seen corresponding path program 31 times [2022-01-18 01:14:41,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:41,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554563875] [2022-01-18 01:14:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:41,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:41,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:41,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554563875] [2022-01-18 01:14:41,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554563875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:41,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:41,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:14:41,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503971078] [2022-01-18 01:14:41,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:41,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:14:41,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:41,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:14:41,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:14:41,903 INFO L87 Difference]: Start difference. First operand 17495 states and 50457 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) [2022-01-18 01:14:42,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:42,826 INFO L93 Difference]: Finished difference Result 25616 states and 73890 transitions. [2022-01-18 01:14:42,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 01:14:42,826 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 [2022-01-18 01:14:42,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:42,874 INFO L225 Difference]: With dead ends: 25616 [2022-01-18 01:14:42,874 INFO L226 Difference]: Without dead ends: 25616 [2022-01-18 01:14:42,874 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 [2022-01-18 01:14:42,874 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1277 mSDsluCounter, 2813 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 3087 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:42,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1277 Valid, 3087 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:14:42,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25616 states. [2022-01-18 01:14:43,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25616 to 17487. [2022-01-18 01:14:43,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17487 states, 17486 states have (on average 2.8843074459567655) internal successors, (50435), 17486 states have internal predecessors, (50435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17487 states to 17487 states and 50435 transitions. [2022-01-18 01:14:43,162 INFO L78 Accepts]: Start accepts. Automaton has 17487 states and 50435 transitions. Word has length 177 [2022-01-18 01:14:43,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:43,163 INFO L470 AbstractCegarLoop]: Abstraction has 17487 states and 50435 transitions. [2022-01-18 01:14:43,163 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) [2022-01-18 01:14:43,163 INFO L276 IsEmpty]: Start isEmpty. Operand 17487 states and 50435 transitions. [2022-01-18 01:14:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:43,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:43,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:43,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-01-18 01:14:43,186 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:43,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:43,186 INFO L85 PathProgramCache]: Analyzing trace with hash 75904840, now seen corresponding path program 21 times [2022-01-18 01:14:43,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:43,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350599977] [2022-01-18 01:14:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:43,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:43,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:43,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:43,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350599977] [2022-01-18 01:14:43,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350599977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:43,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:43,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:14:43,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094490502] [2022-01-18 01:14:43,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:43,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:14:43,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:43,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:14:43,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:14:43,585 INFO L87 Difference]: Start difference. First operand 17487 states and 50435 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) [2022-01-18 01:14:44,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:44,384 INFO L93 Difference]: Finished difference Result 25832 states and 74516 transitions. [2022-01-18 01:14:44,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 01:14:44,384 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 [2022-01-18 01:14:44,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:44,433 INFO L225 Difference]: With dead ends: 25832 [2022-01-18 01:14:44,433 INFO L226 Difference]: Without dead ends: 25832 [2022-01-18 01:14:44,433 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 [2022-01-18 01:14:44,434 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1243 mSDsluCounter, 2612 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:44,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1243 Valid, 2890 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:14:44,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25832 states. [2022-01-18 01:14:44,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25832 to 17463. [2022-01-18 01:14:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17463 states, 17462 states have (on average 2.8831176268468677) internal successors, (50345), 17462 states have internal predecessors, (50345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17463 states to 17463 states and 50345 transitions. [2022-01-18 01:14:44,719 INFO L78 Accepts]: Start accepts. Automaton has 17463 states and 50345 transitions. Word has length 177 [2022-01-18 01:14:44,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:44,719 INFO L470 AbstractCegarLoop]: Abstraction has 17463 states and 50345 transitions. [2022-01-18 01:14:44,719 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) [2022-01-18 01:14:44,719 INFO L276 IsEmpty]: Start isEmpty. Operand 17463 states and 50345 transitions. [2022-01-18 01:14:44,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:44,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:44,742 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] [2022-01-18 01:14:44,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-01-18 01:14:44,742 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:44,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:44,743 INFO L85 PathProgramCache]: Analyzing trace with hash 29862778, now seen corresponding path program 31 times [2022-01-18 01:14:44,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:44,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686260051] [2022-01-18 01:14:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:44,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:45,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:45,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686260051] [2022-01-18 01:14:45,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686260051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:45,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:45,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:14:45,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676542537] [2022-01-18 01:14:45,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:45,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:14:45,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:45,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:14:45,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:14:45,159 INFO L87 Difference]: Start difference. First operand 17463 states and 50345 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) [2022-01-18 01:14:46,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:46,047 INFO L93 Difference]: Finished difference Result 26274 states and 75662 transitions. [2022-01-18 01:14:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 01:14:46,048 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 [2022-01-18 01:14:46,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:46,097 INFO L225 Difference]: With dead ends: 26274 [2022-01-18 01:14:46,097 INFO L226 Difference]: Without dead ends: 26274 [2022-01-18 01:14:46,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=433, Invalid=1637, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 01:14:46,097 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1065 mSDsluCounter, 3461 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 3721 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:46,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1065 Valid, 3721 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:14:46,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26274 states. [2022-01-18 01:14:46,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26274 to 17463. [2022-01-18 01:14:46,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17463 states, 17462 states have (on average 2.8826594891764974) internal successors, (50337), 17462 states have internal predecessors, (50337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:46,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17463 states to 17463 states and 50337 transitions. [2022-01-18 01:14:46,400 INFO L78 Accepts]: Start accepts. Automaton has 17463 states and 50337 transitions. Word has length 177 [2022-01-18 01:14:46,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:46,400 INFO L470 AbstractCegarLoop]: Abstraction has 17463 states and 50337 transitions. [2022-01-18 01:14:46,401 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) [2022-01-18 01:14:46,401 INFO L276 IsEmpty]: Start isEmpty. Operand 17463 states and 50337 transitions. [2022-01-18 01:14:46,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:46,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:46,423 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:46,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-01-18 01:14:46,424 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:46,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:46,424 INFO L85 PathProgramCache]: Analyzing trace with hash -158017312, now seen corresponding path program 33 times [2022-01-18 01:14:46,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:46,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872934606] [2022-01-18 01:14:46,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:46,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:46,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:46,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:46,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872934606] [2022-01-18 01:14:46,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872934606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:46,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:46,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:14:46,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504336237] [2022-01-18 01:14:46,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:46,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:14:46,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:46,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:14:46,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:14:46,842 INFO L87 Difference]: Start difference. First operand 17463 states and 50337 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) [2022-01-18 01:14:47,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:47,632 INFO L93 Difference]: Finished difference Result 25606 states and 73528 transitions. [2022-01-18 01:14:47,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 01:14:47,633 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 [2022-01-18 01:14:47,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:47,688 INFO L225 Difference]: With dead ends: 25606 [2022-01-18 01:14:47,688 INFO L226 Difference]: Without dead ends: 25606 [2022-01-18 01:14:47,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=428, Invalid=1552, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 01:14:47,689 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 1099 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:47,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1099 Valid, 2792 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:14:47,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25606 states. [2022-01-18 01:14:47,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25606 to 17039. [2022-01-18 01:14:47,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17039 states, 17038 states have (on average 2.8703486324685996) internal successors, (48905), 17038 states have internal predecessors, (48905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:48,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17039 states to 17039 states and 48905 transitions. [2022-01-18 01:14:48,015 INFO L78 Accepts]: Start accepts. Automaton has 17039 states and 48905 transitions. Word has length 177 [2022-01-18 01:14:48,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:48,015 INFO L470 AbstractCegarLoop]: Abstraction has 17039 states and 48905 transitions. [2022-01-18 01:14:48,015 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) [2022-01-18 01:14:48,015 INFO L276 IsEmpty]: Start isEmpty. Operand 17039 states and 48905 transitions. [2022-01-18 01:14:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:48,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:48,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:48,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-01-18 01:14:48,039 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:48,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:48,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1237723586, now seen corresponding path program 32 times [2022-01-18 01:14:48,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:48,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116428351] [2022-01-18 01:14:48,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:48,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:48,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:48,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116428351] [2022-01-18 01:14:48,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116428351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:48,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:48,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:14:48,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190970183] [2022-01-18 01:14:48,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:48,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:14:48,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:48,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:14:48,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:14:48,589 INFO L87 Difference]: Start difference. First operand 17039 states and 48905 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) [2022-01-18 01:14:49,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:49,525 INFO L93 Difference]: Finished difference Result 25000 states and 71826 transitions. [2022-01-18 01:14:49,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 01:14:49,526 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 [2022-01-18 01:14:49,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:49,580 INFO L225 Difference]: With dead ends: 25000 [2022-01-18 01:14:49,580 INFO L226 Difference]: Without dead ends: 25000 [2022-01-18 01:14:49,580 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 [2022-01-18 01:14:49,580 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1375 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:49,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 3021 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:14:49,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25000 states. [2022-01-18 01:14:49,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25000 to 17039. [2022-01-18 01:14:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17039 states, 17038 states have (on average 2.8703486324685996) internal successors, (48905), 17038 states have internal predecessors, (48905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17039 states to 17039 states and 48905 transitions. [2022-01-18 01:14:49,950 INFO L78 Accepts]: Start accepts. Automaton has 17039 states and 48905 transitions. Word has length 177 [2022-01-18 01:14:49,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:49,951 INFO L470 AbstractCegarLoop]: Abstraction has 17039 states and 48905 transitions. [2022-01-18 01:14:49,951 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) [2022-01-18 01:14:49,951 INFO L276 IsEmpty]: Start isEmpty. Operand 17039 states and 48905 transitions. [2022-01-18 01:14:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:49,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:49,976 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] [2022-01-18 01:14:49,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-01-18 01:14:49,976 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:49,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:49,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1701298328, now seen corresponding path program 22 times [2022-01-18 01:14:49,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:49,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815553625] [2022-01-18 01:14:49,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:49,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:50,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:50,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815553625] [2022-01-18 01:14:50,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815553625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:50,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:50,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:14:50,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639378684] [2022-01-18 01:14:50,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:50,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:14:50,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:50,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:14:50,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:14:50,393 INFO L87 Difference]: Start difference. First operand 17039 states and 48905 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) [2022-01-18 01:14:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:51,315 INFO L93 Difference]: Finished difference Result 25224 states and 72474 transitions. [2022-01-18 01:14:51,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 01:14:51,316 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 [2022-01-18 01:14:51,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:51,370 INFO L225 Difference]: With dead ends: 25224 [2022-01-18 01:14:51,370 INFO L226 Difference]: Without dead ends: 25224 [2022-01-18 01:14:51,370 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 [2022-01-18 01:14:51,370 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1110 mSDsluCounter, 3056 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 3341 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:51,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1110 Valid, 3341 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:14:51,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25224 states. [2022-01-18 01:14:51,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25224 to 17031. [2022-01-18 01:14:51,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17031 states, 17030 states have (on average 2.8694656488549617) internal successors, (48867), 17030 states have internal predecessors, (48867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:51,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17031 states to 17031 states and 48867 transitions. [2022-01-18 01:14:51,701 INFO L78 Accepts]: Start accepts. Automaton has 17031 states and 48867 transitions. Word has length 177 [2022-01-18 01:14:51,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:51,702 INFO L470 AbstractCegarLoop]: Abstraction has 17031 states and 48867 transitions. [2022-01-18 01:14:51,702 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) [2022-01-18 01:14:51,702 INFO L276 IsEmpty]: Start isEmpty. Operand 17031 states and 48867 transitions. [2022-01-18 01:14:51,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:51,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:51,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:51,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-01-18 01:14:51,728 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:51,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:51,728 INFO L85 PathProgramCache]: Analyzing trace with hash 981087844, now seen corresponding path program 33 times [2022-01-18 01:14:51,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:51,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140213706] [2022-01-18 01:14:51,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:51,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:52,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:52,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140213706] [2022-01-18 01:14:52,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140213706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:52,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:52,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:14:52,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006798050] [2022-01-18 01:14:52,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:52,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:14:52,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:52,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:14:52,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:14:52,156 INFO L87 Difference]: Start difference. First operand 17031 states and 48867 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) [2022-01-18 01:14:53,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:53,064 INFO L93 Difference]: Finished difference Result 23904 states and 68672 transitions. [2022-01-18 01:14:53,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 01:14:53,065 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 [2022-01-18 01:14:53,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:53,111 INFO L225 Difference]: With dead ends: 23904 [2022-01-18 01:14:53,112 INFO L226 Difference]: Without dead ends: 23904 [2022-01-18 01:14:53,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=525, Invalid=1827, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 01:14:53,112 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1264 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:53,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1264 Valid, 3046 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:14:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23904 states. [2022-01-18 01:14:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23904 to 16103. [2022-01-18 01:14:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16103 states, 16102 states have (on average 2.8696435225437833) internal successors, (46207), 16102 states have internal predecessors, (46207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16103 states to 16103 states and 46207 transitions. [2022-01-18 01:14:53,412 INFO L78 Accepts]: Start accepts. Automaton has 16103 states and 46207 transitions. Word has length 177 [2022-01-18 01:14:53,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:53,413 INFO L470 AbstractCegarLoop]: Abstraction has 16103 states and 46207 transitions. [2022-01-18 01:14:53,413 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) [2022-01-18 01:14:53,413 INFO L276 IsEmpty]: Start isEmpty. Operand 16103 states and 46207 transitions. [2022-01-18 01:14:53,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:53,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:53,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:53,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-01-18 01:14:53,436 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:53,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:53,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1275970236, now seen corresponding path program 23 times [2022-01-18 01:14:53,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:53,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224697486] [2022-01-18 01:14:53,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:53,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:53,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:53,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224697486] [2022-01-18 01:14:53,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224697486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:53,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:53,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:14:53,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413348283] [2022-01-18 01:14:53,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:53,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:14:53,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:53,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:14:53,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:14:53,879 INFO L87 Difference]: Start difference. First operand 16103 states and 46207 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) [2022-01-18 01:14:54,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:54,762 INFO L93 Difference]: Finished difference Result 23984 states and 68916 transitions. [2022-01-18 01:14:54,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 01:14:54,763 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 [2022-01-18 01:14:54,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:54,804 INFO L225 Difference]: With dead ends: 23984 [2022-01-18 01:14:54,805 INFO L226 Difference]: Without dead ends: 23984 [2022-01-18 01:14:54,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=518, Invalid=1738, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 01:14:54,805 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1396 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:54,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1396 Valid, 2576 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:14:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23984 states. [2022-01-18 01:14:55,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23984 to 16119. [2022-01-18 01:14:55,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16119 states, 16118 states have (on average 2.8695247549323737) internal successors, (46251), 16118 states have internal predecessors, (46251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16119 states to 16119 states and 46251 transitions. [2022-01-18 01:14:55,086 INFO L78 Accepts]: Start accepts. Automaton has 16119 states and 46251 transitions. Word has length 177 [2022-01-18 01:14:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:55,086 INFO L470 AbstractCegarLoop]: Abstraction has 16119 states and 46251 transitions. [2022-01-18 01:14:55,087 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) [2022-01-18 01:14:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 16119 states and 46251 transitions. [2022-01-18 01:14:55,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:55,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:55,108 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] [2022-01-18 01:14:55,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-01-18 01:14:55,108 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:55,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:55,109 INFO L85 PathProgramCache]: Analyzing trace with hash -818393186, now seen corresponding path program 24 times [2022-01-18 01:14:55,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:55,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335760487] [2022-01-18 01:14:55,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:55,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:55,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:55,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:55,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335760487] [2022-01-18 01:14:55,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335760487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:55,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:55,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:14:55,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486764291] [2022-01-18 01:14:55,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:55,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:14:55,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:55,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:14:55,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:14:55,545 INFO L87 Difference]: Start difference. First operand 16119 states and 46251 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) [2022-01-18 01:14:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:56,630 INFO L93 Difference]: Finished difference Result 24600 states and 70682 transitions. [2022-01-18 01:14:56,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 01:14:56,630 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 [2022-01-18 01:14:56,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:56,679 INFO L225 Difference]: With dead ends: 24600 [2022-01-18 01:14:56,679 INFO L226 Difference]: Without dead ends: 24600 [2022-01-18 01:14:56,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 01:14:56,679 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1267 mSDsluCounter, 3560 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:56,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1267 Valid, 3860 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:14:56,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24600 states. [2022-01-18 01:14:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24600 to 15813. [2022-01-18 01:14:57,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15813 states, 15812 states have (on average 2.869908929926638) internal successors, (45379), 15812 states have internal predecessors, (45379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15813 states to 15813 states and 45379 transitions. [2022-01-18 01:14:57,076 INFO L78 Accepts]: Start accepts. Automaton has 15813 states and 45379 transitions. Word has length 177 [2022-01-18 01:14:57,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:57,077 INFO L470 AbstractCegarLoop]: Abstraction has 15813 states and 45379 transitions. [2022-01-18 01:14:57,077 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) [2022-01-18 01:14:57,077 INFO L276 IsEmpty]: Start isEmpty. Operand 15813 states and 45379 transitions. [2022-01-18 01:14:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:57,100 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:57,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:57,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-01-18 01:14:57,101 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:57,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:57,102 INFO L85 PathProgramCache]: Analyzing trace with hash 99296670, now seen corresponding path program 32 times [2022-01-18 01:14:57,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:57,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878428012] [2022-01-18 01:14:57,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:57,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:57,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:57,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878428012] [2022-01-18 01:14:57,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878428012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:57,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:57,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:14:57,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902928175] [2022-01-18 01:14:57,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:57,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:14:57,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:57,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:14:57,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:14:57,525 INFO L87 Difference]: Start difference. First operand 15813 states and 45379 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) [2022-01-18 01:14:58,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:14:58,558 INFO L93 Difference]: Finished difference Result 25677 states and 73427 transitions. [2022-01-18 01:14:58,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 01:14:58,559 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 [2022-01-18 01:14:58,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:14:58,611 INFO L225 Difference]: With dead ends: 25677 [2022-01-18 01:14:58,611 INFO L226 Difference]: Without dead ends: 25677 [2022-01-18 01:14:58,612 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 [2022-01-18 01:14:58,612 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 1402 mSDsluCounter, 4166 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 4489 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:14:58,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1402 Valid, 4489 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:14:58,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25677 states. [2022-01-18 01:14:58,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25677 to 15875. [2022-01-18 01:14:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15875 states, 15874 states have (on average 2.8637394481542144) internal successors, (45459), 15874 states have internal predecessors, (45459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:14:58,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15875 states to 15875 states and 45459 transitions. [2022-01-18 01:14:58,911 INFO L78 Accepts]: Start accepts. Automaton has 15875 states and 45459 transitions. Word has length 177 [2022-01-18 01:14:58,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:14:58,912 INFO L470 AbstractCegarLoop]: Abstraction has 15875 states and 45459 transitions. [2022-01-18 01:14:58,912 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) [2022-01-18 01:14:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 15875 states and 45459 transitions. [2022-01-18 01:14:58,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:14:58,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:14:58,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:14:58,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-01-18 01:14:58,933 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:14:58,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:14:58,933 INFO L85 PathProgramCache]: Analyzing trace with hash 719692692, now seen corresponding path program 34 times [2022-01-18 01:14:58,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:14:58,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367438098] [2022-01-18 01:14:58,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:14:58,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:14:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:14:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:14:59,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:14:59,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367438098] [2022-01-18 01:14:59,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367438098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:14:59,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:14:59,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:14:59,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848268324] [2022-01-18 01:14:59,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:14:59,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:14:59,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:14:59,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:14:59,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:14:59,374 INFO L87 Difference]: Start difference. First operand 15875 states and 45459 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) [2022-01-18 01:15:00,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:15:00,435 INFO L93 Difference]: Finished difference Result 22772 states and 65312 transitions. [2022-01-18 01:15:00,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 01:15:00,436 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 [2022-01-18 01:15:00,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:15:00,480 INFO L225 Difference]: With dead ends: 22772 [2022-01-18 01:15:00,480 INFO L226 Difference]: Without dead ends: 22772 [2022-01-18 01:15:00,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=458, Invalid=1798, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 01:15:00,481 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 1353 mSDsluCounter, 3805 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 4094 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:15:00,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1353 Valid, 4094 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:15:00,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22772 states. [2022-01-18 01:15:00,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22772 to 16115. [2022-01-18 01:15:00,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16115 states, 16114 states have (on average 2.859811344172769) internal successors, (46083), 16114 states have internal predecessors, (46083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16115 states to 16115 states and 46083 transitions. [2022-01-18 01:15:00,760 INFO L78 Accepts]: Start accepts. Automaton has 16115 states and 46083 transitions. Word has length 177 [2022-01-18 01:15:00,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:15:00,760 INFO L470 AbstractCegarLoop]: Abstraction has 16115 states and 46083 transitions. [2022-01-18 01:15:00,760 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) [2022-01-18 01:15:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 16115 states and 46083 transitions. [2022-01-18 01:15:00,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:15:00,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:15:00,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:15:00,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-01-18 01:15:00,785 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:15:00,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:15:00,785 INFO L85 PathProgramCache]: Analyzing trace with hash -810387584, now seen corresponding path program 35 times [2022-01-18 01:15:00,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:15:00,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657665863] [2022-01-18 01:15:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:15:00,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:15:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:15:01,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:15:01,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:15:01,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657665863] [2022-01-18 01:15:01,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657665863] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:15:01,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142502846] [2022-01-18 01:15:01,270 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:15:01,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:15:01,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:15:01,271 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) [2022-01-18 01:15:01,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 01:15:01,439 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:15:01,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:15:01,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 69 conjunts are in the unsatisfiable core [2022-01-18 01:15:01,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:15:01,608 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 [2022-01-18 01:15:01,741 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 [2022-01-18 01:15:02,076 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:15:02,076 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 [2022-01-18 01:15:02,254 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 [2022-01-18 01:15:02,524 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 [2022-01-18 01:15:02,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:15:02,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:15:02,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-01-18 01:15:03,196 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 [2022-01-18 01:15:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:15:03,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:15:05,201 INFO L353 Elim1Store]: treesize reduction 23, result has 60.3 percent of original size [2022-01-18 01:15:05,202 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 2 case distinctions, treesize of input 169 treesize of output 75 [2022-01-18 01:15:05,228 INFO L353 Elim1Store]: treesize reduction 13, result has 66.7 percent of original size [2022-01-18 01:15:05,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 657 treesize of output 594 [2022-01-18 01:15:05,240 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:15:05,240 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 551 treesize of output 519 [2022-01-18 01:15:05,252 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:15:05,252 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 470 treesize of output 414 [2022-01-18 01:15:08,768 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 01:15:08,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-01-18 01:15:08,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:15:08,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142502846] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:15:08,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:15:08,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 68 [2022-01-18 01:15:08,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644888837] [2022-01-18 01:15:08,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:15:08,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-18 01:15:08,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:15:08,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-18 01:15:08,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=4157, Unknown=129, NotChecked=0, Total=4556 [2022-01-18 01:15:08,875 INFO L87 Difference]: Start difference. First operand 16115 states and 46083 transitions. Second operand has 68 states, 68 states have (on average 6.3088235294117645) internal successors, (429), 68 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:13,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:15:13,908 INFO L93 Difference]: Finished difference Result 29918 states and 83766 transitions. [2022-01-18 01:15:13,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 01:15:13,908 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 6.3088235294117645) internal successors, (429), 68 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have 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 [2022-01-18 01:15:13,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:15:13,961 INFO L225 Difference]: With dead ends: 29918 [2022-01-18 01:15:13,961 INFO L226 Difference]: Without dead ends: 29918 [2022-01-18 01:15:13,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 315 SyntacticMatches, 9 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4388 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1550, Invalid=14554, Unknown=152, NotChecked=0, Total=16256 [2022-01-18 01:15:13,963 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 1862 mSDsluCounter, 14786 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 14861 SdHoareTripleChecker+Invalid, 3898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1643 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 01:15:13,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1862 Valid, 14861 Invalid, 3898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2224 Invalid, 0 Unknown, 1643 Unchecked, 0.9s Time] [2022-01-18 01:15:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29918 states. [2022-01-18 01:15:14,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29918 to 17707. [2022-01-18 01:15:14,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17707 states, 17706 states have (on average 2.862814865017508) internal successors, (50689), 17706 states have internal predecessors, (50689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17707 states to 17707 states and 50689 transitions. [2022-01-18 01:15:14,296 INFO L78 Accepts]: Start accepts. Automaton has 17707 states and 50689 transitions. Word has length 177 [2022-01-18 01:15:14,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:15:14,296 INFO L470 AbstractCegarLoop]: Abstraction has 17707 states and 50689 transitions. [2022-01-18 01:15:14,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 6.3088235294117645) internal successors, (429), 68 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:14,297 INFO L276 IsEmpty]: Start isEmpty. Operand 17707 states and 50689 transitions. [2022-01-18 01:15:14,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:15:14,319 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:15:14,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:15:14,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 01:15:14,520 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,SelfDestructingSolverStorable155 [2022-01-18 01:15:14,520 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:15:14,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:15:14,520 INFO L85 PathProgramCache]: Analyzing trace with hash 426328916, now seen corresponding path program 34 times [2022-01-18 01:15:14,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:15:14,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736024002] [2022-01-18 01:15:14,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:15:14,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:15:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:15:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:15:14,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:15:14,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736024002] [2022-01-18 01:15:14,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736024002] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:15:14,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132336809] [2022-01-18 01:15:14,989 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:15:14,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:15:14,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:15:14,990 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) [2022-01-18 01:15:14,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 01:15:15,159 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:15:15,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:15:15,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 01:15:15,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:15:15,185 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 [2022-01-18 01:15:15,252 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 01:15:15,252 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 [2022-01-18 01:15:15,523 INFO L353 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-01-18 01:15:15,523 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 [2022-01-18 01:15:15,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-01-18 01:15:16,092 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 [2022-01-18 01:15:16,158 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:15:16,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:15:16,460 INFO L353 Elim1Store]: treesize reduction 27, result has 68.2 percent of original size [2022-01-18 01:15:16,460 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 86 treesize of output 111 [2022-01-18 01:15:16,467 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:15:16,467 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 50 treesize of output 50 [2022-01-18 01:15:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:15:18,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132336809] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:15:18,194 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:15:18,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 21] total 60 [2022-01-18 01:15:18,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910406764] [2022-01-18 01:15:18,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:15:18,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-18 01:15:18,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:15:18,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-18 01:15:18,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=3334, Unknown=1, NotChecked=0, Total=3540 [2022-01-18 01:15:18,196 INFO L87 Difference]: Start difference. First operand 17707 states and 50689 transitions. Second operand has 60 states, 60 states have (on average 6.85) internal successors, (411), 60 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:22,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:15:22,548 INFO L93 Difference]: Finished difference Result 31505 states and 90551 transitions. [2022-01-18 01:15:22,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 01:15:22,548 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 6.85) internal successors, (411), 60 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have 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 [2022-01-18 01:15:22,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:15:22,609 INFO L225 Difference]: With dead ends: 31505 [2022-01-18 01:15:22,609 INFO L226 Difference]: Without dead ends: 31505 [2022-01-18 01:15:22,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 327 SyntacticMatches, 11 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1587, Invalid=8714, Unknown=1, NotChecked=0, Total=10302 [2022-01-18 01:15:22,610 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 3947 mSDsluCounter, 11971 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3947 SdHoareTripleChecker+Valid, 12166 SdHoareTripleChecker+Invalid, 3389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1047 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 01:15:22,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3947 Valid, 12166 Invalid, 3389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2312 Invalid, 0 Unknown, 1047 Unchecked, 0.9s Time] [2022-01-18 01:15:22,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31505 states. [2022-01-18 01:15:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31505 to 17525. [2022-01-18 01:15:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17525 states, 17524 states have (on average 2.8705204291257704) internal successors, (50303), 17524 states have internal predecessors, (50303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:22,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17525 states to 17525 states and 50303 transitions. [2022-01-18 01:15:22,927 INFO L78 Accepts]: Start accepts. Automaton has 17525 states and 50303 transitions. Word has length 177 [2022-01-18 01:15:22,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:15:22,927 INFO L470 AbstractCegarLoop]: Abstraction has 17525 states and 50303 transitions. [2022-01-18 01:15:22,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 6.85) internal successors, (411), 60 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:22,928 INFO L276 IsEmpty]: Start isEmpty. Operand 17525 states and 50303 transitions. [2022-01-18 01:15:22,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:15:22,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:15:22,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:15:22,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 01:15:23,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:15:23,151 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:15:23,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:15:23,151 INFO L85 PathProgramCache]: Analyzing trace with hash -488322240, now seen corresponding path program 33 times [2022-01-18 01:15:23,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:15:23,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983575972] [2022-01-18 01:15:23,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:15:23,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:15:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:15:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:15:23,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:15:23,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983575972] [2022-01-18 01:15:23,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983575972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:15:23,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:15:23,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-18 01:15:23,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933124203] [2022-01-18 01:15:23,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:15:23,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 01:15:23,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:15:23,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 01:15:23,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-01-18 01:15:23,670 INFO L87 Difference]: Start difference. First operand 17525 states and 50303 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) [2022-01-18 01:15:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:15:25,043 INFO L93 Difference]: Finished difference Result 29101 states and 83619 transitions. [2022-01-18 01:15:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 01:15:25,043 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 [2022-01-18 01:15:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:15:25,097 INFO L225 Difference]: With dead ends: 29101 [2022-01-18 01:15:25,097 INFO L226 Difference]: Without dead ends: 29101 [2022-01-18 01:15:25,098 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 [2022-01-18 01:15:25,098 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 1608 mSDsluCounter, 4293 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 4600 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:15:25,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 4600 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:15:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29101 states. [2022-01-18 01:15:25,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29101 to 17477. [2022-01-18 01:15:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17477 states, 17476 states have (on average 2.8708514534218357) internal successors, (50171), 17476 states have internal predecessors, (50171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17477 states to 17477 states and 50171 transitions. [2022-01-18 01:15:25,429 INFO L78 Accepts]: Start accepts. Automaton has 17477 states and 50171 transitions. Word has length 177 [2022-01-18 01:15:25,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:15:25,430 INFO L470 AbstractCegarLoop]: Abstraction has 17477 states and 50171 transitions. [2022-01-18 01:15:25,430 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) [2022-01-18 01:15:25,430 INFO L276 IsEmpty]: Start isEmpty. Operand 17477 states and 50171 transitions. [2022-01-18 01:15:25,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:15:25,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:15:25,455 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] [2022-01-18 01:15:25,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-01-18 01:15:25,455 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:15:25,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:15:25,456 INFO L85 PathProgramCache]: Analyzing trace with hash -650611166, now seen corresponding path program 34 times [2022-01-18 01:15:25,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:15:25,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936275756] [2022-01-18 01:15:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:15:25,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:15:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:15:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:15:25,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:15:25,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936275756] [2022-01-18 01:15:25,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936275756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:15:25,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:15:25,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-18 01:15:25,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559716275] [2022-01-18 01:15:25,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:15:25,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 01:15:25,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:15:25,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 01:15:25,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-01-18 01:15:25,901 INFO L87 Difference]: Start difference. First operand 17477 states and 50171 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) [2022-01-18 01:15:27,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:15:27,042 INFO L93 Difference]: Finished difference Result 25440 states and 73350 transitions. [2022-01-18 01:15:27,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 01:15:27,042 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 [2022-01-18 01:15:27,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:15:27,089 INFO L225 Difference]: With dead ends: 25440 [2022-01-18 01:15:27,090 INFO L226 Difference]: Without dead ends: 25440 [2022-01-18 01:15:27,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=414, Invalid=1656, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 01:15:27,090 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1344 mSDsluCounter, 4100 mSDsCounter, 0 mSdLazyCounter, 1335 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 4377 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:15:27,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1344 Valid, 4377 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1335 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:15:27,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25440 states. [2022-01-18 01:15:27,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25440 to 17453. [2022-01-18 01:15:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17453 states, 17452 states have (on average 2.8710176484070593) internal successors, (50105), 17452 states have internal predecessors, (50105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:27,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17453 states to 17453 states and 50105 transitions. [2022-01-18 01:15:27,377 INFO L78 Accepts]: Start accepts. Automaton has 17453 states and 50105 transitions. Word has length 177 [2022-01-18 01:15:27,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:15:27,377 INFO L470 AbstractCegarLoop]: Abstraction has 17453 states and 50105 transitions. [2022-01-18 01:15:27,377 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) [2022-01-18 01:15:27,377 INFO L276 IsEmpty]: Start isEmpty. Operand 17453 states and 50105 transitions. [2022-01-18 01:15:27,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:15:27,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:15:27,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:15:27,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-01-18 01:15:27,400 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:15:27,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:15:27,400 INFO L85 PathProgramCache]: Analyzing trace with hash 176651334, now seen corresponding path program 36 times [2022-01-18 01:15:27,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:15:27,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580479236] [2022-01-18 01:15:27,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:15:27,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:15:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:15:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:15:27,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:15:27,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580479236] [2022-01-18 01:15:27,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580479236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:15:27,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:15:27,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:15:27,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661262937] [2022-01-18 01:15:27,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:15:27,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:15:27,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:15:27,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:15:27,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:15:27,957 INFO L87 Difference]: Start difference. First operand 17453 states and 50105 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) [2022-01-18 01:15:29,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:15:29,100 INFO L93 Difference]: Finished difference Result 24994 states and 72030 transitions. [2022-01-18 01:15:29,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 01:15:29,101 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 [2022-01-18 01:15:29,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:15:29,145 INFO L225 Difference]: With dead ends: 24994 [2022-01-18 01:15:29,145 INFO L226 Difference]: Without dead ends: 24994 [2022-01-18 01:15:29,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=458, Invalid=1798, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 01:15:29,146 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1316 mSDsluCounter, 3456 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:15:29,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 3742 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:15:29,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24994 states. [2022-01-18 01:15:29,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24994 to 17485. [2022-01-18 01:15:29,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17485 states, 17484 states have (on average 2.87079615648593) internal successors, (50193), 17484 states have internal predecessors, (50193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:29,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17485 states to 17485 states and 50193 transitions. [2022-01-18 01:15:29,425 INFO L78 Accepts]: Start accepts. Automaton has 17485 states and 50193 transitions. Word has length 177 [2022-01-18 01:15:29,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:15:29,425 INFO L470 AbstractCegarLoop]: Abstraction has 17485 states and 50193 transitions. [2022-01-18 01:15:29,425 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) [2022-01-18 01:15:29,425 INFO L276 IsEmpty]: Start isEmpty. Operand 17485 states and 50193 transitions. [2022-01-18 01:15:29,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:15:29,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:15:29,447 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] [2022-01-18 01:15:29,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-01-18 01:15:29,447 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:15:29,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:15:29,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1705294962, now seen corresponding path program 37 times [2022-01-18 01:15:29,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:15:29,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000022886] [2022-01-18 01:15:29,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:15:29,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:15:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:15:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:15:29,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:15:29,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000022886] [2022-01-18 01:15:29,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000022886] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:15:29,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225489979] [2022-01-18 01:15:29,970 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:15:29,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:15:29,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:15:29,971 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) [2022-01-18 01:15:29,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 01:15:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:15:30,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 72 conjunts are in the unsatisfiable core [2022-01-18 01:15:30,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:15:30,182 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 [2022-01-18 01:15:30,414 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 01:15:30,415 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 [2022-01-18 01:15:30,833 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:15:30,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 01:15:30,955 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 [2022-01-18 01:15:31,140 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2022-01-18 01:15:31,330 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-18 01:15:31,330 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 [2022-01-18 01:15:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:15:31,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:15:32,434 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:15:32,434 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 [2022-01-18 01:15:32,439 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-01-18 01:15:32,439 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 [2022-01-18 01:15:32,449 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:15:32,450 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 [2022-01-18 01:15:32,466 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:15:32,466 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 [2022-01-18 01:15:35,809 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-18 01:15:35,809 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 94 treesize of output 1 [2022-01-18 01:15:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:15:35,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225489979] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:15:35,826 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:15:35,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 29, 28] total 75 [2022-01-18 01:15:35,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952571238] [2022-01-18 01:15:35,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:15:35,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-18 01:15:35,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:15:35,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-18 01:15:35,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=5118, Unknown=86, NotChecked=0, Total=5550 [2022-01-18 01:15:35,828 INFO L87 Difference]: Start difference. First operand 17485 states and 50193 transitions. Second operand has 75 states, 75 states have (on average 5.6) internal successors, (420), 75 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:44,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:15:44,004 INFO L93 Difference]: Finished difference Result 56033 states and 161291 transitions. [2022-01-18 01:15:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-18 01:15:44,005 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 5.6) internal successors, (420), 75 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have 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 [2022-01-18 01:15:44,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:15:44,124 INFO L225 Difference]: With dead ends: 56033 [2022-01-18 01:15:44,124 INFO L226 Difference]: Without dead ends: 56033 [2022-01-18 01:15:44,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 311 SyntacticMatches, 15 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 6 DeprecatedPredicates, 5592 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=4618, Invalid=19166, Unknown=86, NotChecked=0, Total=23870 [2022-01-18 01:15:44,125 INFO L933 BasicCegarLoop]: 437 mSDtfsCounter, 4969 mSDsluCounter, 11307 mSDsCounter, 0 mSdLazyCounter, 2663 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4969 SdHoareTripleChecker+Valid, 11361 SdHoareTripleChecker+Invalid, 4960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2249 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:15:44,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4969 Valid, 11361 Invalid, 4960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2663 Invalid, 0 Unknown, 2249 Unchecked, 1.0s Time] [2022-01-18 01:15:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56033 states. [2022-01-18 01:15:44,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56033 to 17453. [2022-01-18 01:15:44,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17453 states, 17452 states have (on average 2.8710176484070593) internal successors, (50105), 17452 states have internal predecessors, (50105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:44,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17453 states to 17453 states and 50105 transitions. [2022-01-18 01:15:44,667 INFO L78 Accepts]: Start accepts. Automaton has 17453 states and 50105 transitions. Word has length 177 [2022-01-18 01:15:44,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:15:44,667 INFO L470 AbstractCegarLoop]: Abstraction has 17453 states and 50105 transitions. [2022-01-18 01:15:44,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 5.6) internal successors, (420), 75 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:44,667 INFO L276 IsEmpty]: Start isEmpty. Operand 17453 states and 50105 transitions. [2022-01-18 01:15:44,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:15:44,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:15:44,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:15:44,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 01:15:44,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:15:44,892 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:15:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:15:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1948013948, now seen corresponding path program 35 times [2022-01-18 01:15:44,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:15:44,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343656132] [2022-01-18 01:15:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:15:44,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:15:44,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:15:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:15:45,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:15:45,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343656132] [2022-01-18 01:15:45,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343656132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:15:45,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:15:45,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-18 01:15:45,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801291909] [2022-01-18 01:15:45,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:15:45,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 01:15:45,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:15:45,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 01:15:45,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-01-18 01:15:45,332 INFO L87 Difference]: Start difference. First operand 17453 states and 50105 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) [2022-01-18 01:15:46,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:15:46,323 INFO L93 Difference]: Finished difference Result 24704 states and 71148 transitions. [2022-01-18 01:15:46,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:15:46,323 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 [2022-01-18 01:15:46,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:15:46,369 INFO L225 Difference]: With dead ends: 24704 [2022-01-18 01:15:46,370 INFO L226 Difference]: Without dead ends: 24704 [2022-01-18 01:15:46,370 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 [2022-01-18 01:15:46,370 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1123 mSDsluCounter, 3720 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:15:46,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 4000 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:15:46,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24704 states. [2022-01-18 01:15:46,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24704 to 17437. [2022-01-18 01:15:46,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17437 states, 17436 states have (on average 2.8697522367515487) internal successors, (50037), 17436 states have internal predecessors, (50037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:46,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17437 states to 17437 states and 50037 transitions. [2022-01-18 01:15:46,654 INFO L78 Accepts]: Start accepts. Automaton has 17437 states and 50037 transitions. Word has length 177 [2022-01-18 01:15:46,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:15:46,654 INFO L470 AbstractCegarLoop]: Abstraction has 17437 states and 50037 transitions. [2022-01-18 01:15:46,654 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) [2022-01-18 01:15:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 17437 states and 50037 transitions. [2022-01-18 01:15:46,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:15:46,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:15:46,676 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] [2022-01-18 01:15:46,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-01-18 01:15:46,677 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:15:46,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:15:46,677 INFO L85 PathProgramCache]: Analyzing trace with hash -2060753150, now seen corresponding path program 38 times [2022-01-18 01:15:46,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:15:46,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175954014] [2022-01-18 01:15:46,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:15:46,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:15:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:15:47,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:15:47,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:15:47,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175954014] [2022-01-18 01:15:47,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175954014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:15:47,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:15:47,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:15:47,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946813388] [2022-01-18 01:15:47,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:15:47,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:15:47,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:15:47,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:15:47,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:15:47,144 INFO L87 Difference]: Start difference. First operand 17437 states and 50037 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) [2022-01-18 01:15:48,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:15:48,221 INFO L93 Difference]: Finished difference Result 24638 states and 70986 transitions. [2022-01-18 01:15:48,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:15:48,221 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 [2022-01-18 01:15:48,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:15:48,269 INFO L225 Difference]: With dead ends: 24638 [2022-01-18 01:15:48,269 INFO L226 Difference]: Without dead ends: 24638 [2022-01-18 01:15:48,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=383, Invalid=1597, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 01:15:48,269 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 1257 mSDsluCounter, 3789 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 4067 SdHoareTripleChecker+Invalid, 1241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:15:48,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 4067 Invalid, 1241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:15:48,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24638 states. [2022-01-18 01:15:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24638 to 17445. [2022-01-18 01:15:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17445 states, 17444 states have (on average 2.869697317129099) internal successors, (50059), 17444 states have internal predecessors, (50059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17445 states to 17445 states and 50059 transitions. [2022-01-18 01:15:48,562 INFO L78 Accepts]: Start accepts. Automaton has 17445 states and 50059 transitions. Word has length 177 [2022-01-18 01:15:48,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:15:48,563 INFO L470 AbstractCegarLoop]: Abstraction has 17445 states and 50059 transitions. [2022-01-18 01:15:48,563 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) [2022-01-18 01:15:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 17445 states and 50059 transitions. [2022-01-18 01:15:48,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:15:48,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:15:48,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:15:48,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-01-18 01:15:48,586 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:15:48,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:15:48,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1139092540, now seen corresponding path program 39 times [2022-01-18 01:15:48,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:15:48,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926701446] [2022-01-18 01:15:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:15:48,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:15:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:15:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:15:49,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:15:49,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926701446] [2022-01-18 01:15:49,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926701446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:15:49,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:15:49,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-01-18 01:15:49,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73481400] [2022-01-18 01:15:49,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:15:49,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 01:15:49,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:15:49,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 01:15:49,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-01-18 01:15:49,137 INFO L87 Difference]: Start difference. First operand 17445 states and 50059 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) [2022-01-18 01:15:50,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:15:50,254 INFO L93 Difference]: Finished difference Result 23756 states and 68366 transitions. [2022-01-18 01:15:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 01:15:50,254 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 [2022-01-18 01:15:50,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:15:50,295 INFO L225 Difference]: With dead ends: 23756 [2022-01-18 01:15:50,295 INFO L226 Difference]: Without dead ends: 23756 [2022-01-18 01:15:50,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=435, Invalid=1727, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 01:15:50,295 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1485 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 3607 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:15:50,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 3607 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:15:50,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23756 states. [2022-01-18 01:15:50,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23756 to 17437. [2022-01-18 01:15:50,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17437 states, 17436 states have (on average 2.8697522367515487) internal successors, (50037), 17436 states have internal predecessors, (50037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:50,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17437 states to 17437 states and 50037 transitions. [2022-01-18 01:15:50,569 INFO L78 Accepts]: Start accepts. Automaton has 17437 states and 50037 transitions. Word has length 177 [2022-01-18 01:15:50,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:15:50,569 INFO L470 AbstractCegarLoop]: Abstraction has 17437 states and 50037 transitions. [2022-01-18 01:15:50,570 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) [2022-01-18 01:15:50,570 INFO L276 IsEmpty]: Start isEmpty. Operand 17437 states and 50037 transitions. [2022-01-18 01:15:50,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:15:50,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:15:50,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:15:50,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-01-18 01:15:50,594 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:15:50,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:15:50,594 INFO L85 PathProgramCache]: Analyzing trace with hash -675517798, now seen corresponding path program 25 times [2022-01-18 01:15:50,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:15:50,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852046563] [2022-01-18 01:15:50,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:15:50,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:15:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:15:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:15:51,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:15:51,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852046563] [2022-01-18 01:15:51,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852046563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:15:51,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:15:51,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-18 01:15:51,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025044586] [2022-01-18 01:15:51,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:15:51,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 01:15:51,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:15:51,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 01:15:51,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-01-18 01:15:51,104 INFO L87 Difference]: Start difference. First operand 17437 states and 50037 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) [2022-01-18 01:15:52,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:15:52,241 INFO L93 Difference]: Finished difference Result 22732 states and 65206 transitions. [2022-01-18 01:15:52,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 01:15:52,241 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 [2022-01-18 01:15:52,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:15:52,282 INFO L225 Difference]: With dead ends: 22732 [2022-01-18 01:15:52,283 INFO L226 Difference]: Without dead ends: 22732 [2022-01-18 01:15:52,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=428, Invalid=1642, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 01:15:52,283 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1244 mSDsluCounter, 3621 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 3915 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:15:52,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1244 Valid, 3915 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:15:52,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22732 states. [2022-01-18 01:15:52,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22732 to 16125. [2022-01-18 01:15:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16125 states, 16124 states have (on average 2.8561771272637064) internal successors, (46053), 16124 states have internal predecessors, (46053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:15:52,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16125 states to 16125 states and 46053 transitions. [2022-01-18 01:15:52,551 INFO L78 Accepts]: Start accepts. Automaton has 16125 states and 46053 transitions. Word has length 177 [2022-01-18 01:15:52,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:15:52,551 INFO L470 AbstractCegarLoop]: Abstraction has 16125 states and 46053 transitions. [2022-01-18 01:15:52,551 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) [2022-01-18 01:15:52,552 INFO L276 IsEmpty]: Start isEmpty. Operand 16125 states and 46053 transitions. [2022-01-18 01:15:52,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:15:52,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:15:52,573 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] [2022-01-18 01:15:52,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-01-18 01:15:52,573 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:15:52,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:15:52,573 INFO L85 PathProgramCache]: Analyzing trace with hash -114360128, now seen corresponding path program 35 times [2022-01-18 01:15:52,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:15:52,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304681557] [2022-01-18 01:15:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:15:52,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:15:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:15:52,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:15:52,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:15:52,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304681557] [2022-01-18 01:15:52,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304681557] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:15:52,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177278809] [2022-01-18 01:15:52,879 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:15:52,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:15:52,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:15:52,880 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) [2022-01-18 01:15:52,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 01:15:53,052 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:15:53,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:15:53,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 77 conjunts are in the unsatisfiable core [2022-01-18 01:15:53,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:15:53,081 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 [2022-01-18 01:15:53,111 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 01:15:53,111 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 [2022-01-18 01:15:53,409 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-01-18 01:15:53,410 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 [2022-01-18 01:15:53,586 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 [2022-01-18 01:15:54,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:15:54,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:15:54,097 INFO L353 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-01-18 01:15:54,097 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 17 [2022-01-18 01:15:54,257 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 [2022-01-18 01:15:54,522 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 [2022-01-18 01:15:54,621 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 [2022-01-18 01:15:54,985 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 [2022-01-18 01:15:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:15:55,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:15:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:15:55,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177278809] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:15:55,386 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:15:55,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-01-18 01:15:55,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483678589] [2022-01-18 01:15:55,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:15:55,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 01:15:55,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:15:55,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 01:15:55,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 01:15:55,387 INFO L87 Difference]: Start difference. First operand 16125 states and 46053 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) [2022-01-18 01:16:01,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:01,773 INFO L93 Difference]: Finished difference Result 29094 states and 83042 transitions. [2022-01-18 01:16:01,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 01:16:01,774 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 [2022-01-18 01:16:01,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:01,825 INFO L225 Difference]: With dead ends: 29094 [2022-01-18 01:16:01,826 INFO L226 Difference]: Without dead ends: 29094 [2022-01-18 01:16:01,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 341 SyntacticMatches, 3 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 2644 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2106, Invalid=8814, Unknown=0, NotChecked=0, Total=10920 [2022-01-18 01:16:01,826 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 2225 mSDsluCounter, 8749 mSDsCounter, 0 mSdLazyCounter, 2444 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 8975 SdHoareTripleChecker+Invalid, 3195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 711 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:01,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2225 Valid, 8975 Invalid, 3195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2444 Invalid, 0 Unknown, 711 Unchecked, 1.1s Time] [2022-01-18 01:16:01,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29094 states. [2022-01-18 01:16:02,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29094 to 16375. [2022-01-18 01:16:02,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16375 states, 16374 states have (on average 2.8573958715036034) internal successors, (46787), 16374 states have internal predecessors, (46787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:02,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16375 states to 16375 states and 46787 transitions. [2022-01-18 01:16:02,133 INFO L78 Accepts]: Start accepts. Automaton has 16375 states and 46787 transitions. Word has length 177 [2022-01-18 01:16:02,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:02,133 INFO L470 AbstractCegarLoop]: Abstraction has 16375 states and 46787 transitions. [2022-01-18 01:16:02,133 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) [2022-01-18 01:16:02,133 INFO L276 IsEmpty]: Start isEmpty. Operand 16375 states and 46787 transitions. [2022-01-18 01:16:02,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:02,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:02,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:02,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 01:16:02,355 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,SelfDestructingSolverStorable165 [2022-01-18 01:16:02,355 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:02,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:02,355 INFO L85 PathProgramCache]: Analyzing trace with hash -375872774, now seen corresponding path program 36 times [2022-01-18 01:16:02,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:02,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792697668] [2022-01-18 01:16:02,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:02,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:02,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:02,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792697668] [2022-01-18 01:16:02,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792697668] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:16:02,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156665378] [2022-01-18 01:16:02,657 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:16:02,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:16:02,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:16:02,658 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) [2022-01-18 01:16:02,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 01:16:02,836 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 01:16:02,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:16:02,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 01:16:02,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:16:03,316 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 [2022-01-18 01:16:03,466 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 [2022-01-18 01:16:03,524 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 [2022-01-18 01:16:03,746 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-01-18 01:16:03,746 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 [2022-01-18 01:16:03,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:16:03,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:16:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:06,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156665378] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:16:06,050 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:16:06,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 9] total 44 [2022-01-18 01:16:06,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853095832] [2022-01-18 01:16:06,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:16:06,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 01:16:06,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:06,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 01:16:06,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1698, Unknown=4, NotChecked=0, Total=1892 [2022-01-18 01:16:06,052 INFO L87 Difference]: Start difference. First operand 16375 states and 46787 transitions. Second operand has 44 states, 44 states have (on average 8.454545454545455) internal successors, (372), 44 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) [2022-01-18 01:16:08,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:08,582 INFO L93 Difference]: Finished difference Result 27618 states and 78700 transitions. [2022-01-18 01:16:08,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 01:16:08,582 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 8.454545454545455) internal successors, (372), 44 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 [2022-01-18 01:16:08,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:08,632 INFO L225 Difference]: With dead ends: 27618 [2022-01-18 01:16:08,632 INFO L226 Difference]: Without dead ends: 27618 [2022-01-18 01:16:08,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 341 SyntacticMatches, 5 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1913 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1550, Invalid=6278, Unknown=4, NotChecked=0, Total=7832 [2022-01-18 01:16:08,634 INFO L933 BasicCegarLoop]: 472 mSDtfsCounter, 2801 mSDsluCounter, 6482 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2801 SdHoareTripleChecker+Valid, 6783 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 797 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:08,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2801 Valid, 6783 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1694 Invalid, 0 Unknown, 797 Unchecked, 0.7s Time] [2022-01-18 01:16:08,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27618 states. [2022-01-18 01:16:08,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27618 to 14451. [2022-01-18 01:16:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14451 states, 14450 states have (on average 2.8408996539792386) internal successors, (41051), 14450 states have internal predecessors, (41051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14451 states to 14451 states and 41051 transitions. [2022-01-18 01:16:08,916 INFO L78 Accepts]: Start accepts. Automaton has 14451 states and 41051 transitions. Word has length 177 [2022-01-18 01:16:08,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:08,917 INFO L470 AbstractCegarLoop]: Abstraction has 14451 states and 41051 transitions. [2022-01-18 01:16:08,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 8.454545454545455) internal successors, (372), 44 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) [2022-01-18 01:16:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 14451 states and 41051 transitions. [2022-01-18 01:16:08,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:08,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:08,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:08,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 01:16:09,135 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,SelfDestructingSolverStorable166 [2022-01-18 01:16:09,136 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:09,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:09,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2081850938, now seen corresponding path program 40 times [2022-01-18 01:16:09,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:09,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878040253] [2022-01-18 01:16:09,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:09,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:09,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:09,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:09,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878040253] [2022-01-18 01:16:09,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878040253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:09,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:09,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:16:09,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052902001] [2022-01-18 01:16:09,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:09,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:16:09,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:09,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:16:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:16:09,412 INFO L87 Difference]: Start difference. First operand 14451 states and 41051 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) [2022-01-18 01:16:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:10,161 INFO L93 Difference]: Finished difference Result 30211 states and 86619 transitions. [2022-01-18 01:16:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:16:10,161 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 [2022-01-18 01:16:10,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:10,214 INFO L225 Difference]: With dead ends: 30211 [2022-01-18 01:16:10,215 INFO L226 Difference]: Without dead ends: 30211 [2022-01-18 01:16:10,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=426, Invalid=1296, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 01:16:10,215 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 1154 mSDsluCounter, 3546 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 3887 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:10,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1154 Valid, 3887 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:16:10,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30211 states. [2022-01-18 01:16:10,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30211 to 14531. [2022-01-18 01:16:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14531 states, 14530 states have (on average 2.841500344115623) internal successors, (41287), 14530 states have internal predecessors, (41287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:10,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14531 states to 14531 states and 41287 transitions. [2022-01-18 01:16:10,506 INFO L78 Accepts]: Start accepts. Automaton has 14531 states and 41287 transitions. Word has length 177 [2022-01-18 01:16:10,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:10,506 INFO L470 AbstractCegarLoop]: Abstraction has 14531 states and 41287 transitions. [2022-01-18 01:16:10,506 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) [2022-01-18 01:16:10,506 INFO L276 IsEmpty]: Start isEmpty. Operand 14531 states and 41287 transitions. [2022-01-18 01:16:10,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:10,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:10,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:10,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-01-18 01:16:10,525 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:10,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:10,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1172680446, now seen corresponding path program 36 times [2022-01-18 01:16:10,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:10,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696626127] [2022-01-18 01:16:10,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:10,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:10,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:10,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696626127] [2022-01-18 01:16:10,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696626127] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:16:10,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909608300] [2022-01-18 01:16:10,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:16:10,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:16:10,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:16:10,880 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) [2022-01-18 01:16:10,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 01:16:11,063 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 01:16:11,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:16:11,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 72 conjunts are in the unsatisfiable core [2022-01-18 01:16:11,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:16:11,098 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 [2022-01-18 01:16:11,129 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-18 01:16:11,130 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 [2022-01-18 01:16:11,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:16:11,375 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 [2022-01-18 01:16:11,510 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 [2022-01-18 01:16:11,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:16:11,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:16:11,935 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:16:11,936 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 [2022-01-18 01:16:12,084 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 [2022-01-18 01:16:12,297 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 [2022-01-18 01:16:12,378 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 [2022-01-18 01:16:12,879 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 [2022-01-18 01:16:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:16:12,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:16:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:13,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909608300] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:16:13,446 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:16:13,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 28, 11] total 55 [2022-01-18 01:16:13,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134925159] [2022-01-18 01:16:13,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:16:13,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-18 01:16:13,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:13,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-18 01:16:13,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2732, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 01:16:13,447 INFO L87 Difference]: Start difference. First operand 14531 states and 41287 transitions. Second operand has 55 states, 55 states have (on average 7.163636363636364) internal successors, (394), 55 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:20,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:20,800 INFO L93 Difference]: Finished difference Result 43565 states and 125394 transitions. [2022-01-18 01:16:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 01:16:20,801 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 7.163636363636364) internal successors, (394), 55 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have 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 [2022-01-18 01:16:20,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:20,886 INFO L225 Difference]: With dead ends: 43565 [2022-01-18 01:16:20,886 INFO L226 Difference]: Without dead ends: 43565 [2022-01-18 01:16:20,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2777 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2415, Invalid=10467, Unknown=0, NotChecked=0, Total=12882 [2022-01-18 01:16:20,888 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 3961 mSDsluCounter, 11851 mSDsCounter, 0 mSdLazyCounter, 3811 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3961 SdHoareTripleChecker+Valid, 12201 SdHoareTripleChecker+Invalid, 3883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:20,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3961 Valid, 12201 Invalid, 3883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 3811 Invalid, 0 Unknown, 20 Unchecked, 1.6s Time] [2022-01-18 01:16:20,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43565 states. [2022-01-18 01:16:21,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43565 to 16203. [2022-01-18 01:16:21,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16203 states, 16202 states have (on average 2.8602024441426983) internal successors, (46341), 16202 states have internal predecessors, (46341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:21,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16203 states to 16203 states and 46341 transitions. [2022-01-18 01:16:21,306 INFO L78 Accepts]: Start accepts. Automaton has 16203 states and 46341 transitions. Word has length 177 [2022-01-18 01:16:21,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:21,306 INFO L470 AbstractCegarLoop]: Abstraction has 16203 states and 46341 transitions. [2022-01-18 01:16:21,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 7.163636363636364) internal successors, (394), 55 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:21,306 INFO L276 IsEmpty]: Start isEmpty. Operand 16203 states and 46341 transitions. [2022-01-18 01:16:21,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:21,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:21,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:21,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-01-18 01:16:21,528 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,SelfDestructingSolverStorable168 [2022-01-18 01:16:21,529 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:21,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:21,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1485350192, now seen corresponding path program 37 times [2022-01-18 01:16:21,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:21,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133563945] [2022-01-18 01:16:21,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:21,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:21,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:21,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:21,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133563945] [2022-01-18 01:16:21,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133563945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:21,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:21,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:16:21,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917635224] [2022-01-18 01:16:21,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:21,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:16:21,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:21,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:16:21,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:16:21,860 INFO L87 Difference]: Start difference. First operand 16203 states and 46341 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) [2022-01-18 01:16:22,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:22,443 INFO L93 Difference]: Finished difference Result 29038 states and 83466 transitions. [2022-01-18 01:16:22,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:16:22,444 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 [2022-01-18 01:16:22,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:22,497 INFO L225 Difference]: With dead ends: 29038 [2022-01-18 01:16:22,497 INFO L226 Difference]: Without dead ends: 29038 [2022-01-18 01:16:22,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:16:22,497 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1264 mSDsluCounter, 2337 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:22,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1264 Valid, 2639 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:16:22,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29038 states. [2022-01-18 01:16:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29038 to 16235. [2022-01-18 01:16:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16235 states, 16234 states have (on average 2.861463594924233) internal successors, (46453), 16234 states have internal predecessors, (46453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16235 states to 16235 states and 46453 transitions. [2022-01-18 01:16:22,794 INFO L78 Accepts]: Start accepts. Automaton has 16235 states and 46453 transitions. Word has length 177 [2022-01-18 01:16:22,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:22,794 INFO L470 AbstractCegarLoop]: Abstraction has 16235 states and 46453 transitions. [2022-01-18 01:16:22,794 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) [2022-01-18 01:16:22,794 INFO L276 IsEmpty]: Start isEmpty. Operand 16235 states and 46453 transitions. [2022-01-18 01:16:22,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:22,815 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:22,815 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] [2022-01-18 01:16:22,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-01-18 01:16:22,815 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:22,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:22,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1756783830, now seen corresponding path program 41 times [2022-01-18 01:16:22,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:22,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625421589] [2022-01-18 01:16:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:22,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:23,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:23,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:23,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625421589] [2022-01-18 01:16:23,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625421589] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:23,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:23,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:16:23,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935001422] [2022-01-18 01:16:23,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:23,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:16:23,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:23,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:16:23,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:16:23,148 INFO L87 Difference]: Start difference. First operand 16235 states and 46453 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) [2022-01-18 01:16:23,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:23,737 INFO L93 Difference]: Finished difference Result 29142 states and 83760 transitions. [2022-01-18 01:16:23,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:16:23,737 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 [2022-01-18 01:16:23,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:23,794 INFO L225 Difference]: With dead ends: 29142 [2022-01-18 01:16:23,794 INFO L226 Difference]: Without dead ends: 29142 [2022-01-18 01:16:23,794 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 [2022-01-18 01:16:23,794 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 960 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:23,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 3094 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:16:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29142 states. [2022-01-18 01:16:24,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29142 to 16251. [2022-01-18 01:16:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16251 states, 16250 states have (on average 2.8613538461538464) internal successors, (46497), 16250 states have internal predecessors, (46497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16251 states to 16251 states and 46497 transitions. [2022-01-18 01:16:24,183 INFO L78 Accepts]: Start accepts. Automaton has 16251 states and 46497 transitions. Word has length 177 [2022-01-18 01:16:24,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:24,183 INFO L470 AbstractCegarLoop]: Abstraction has 16251 states and 46497 transitions. [2022-01-18 01:16:24,183 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) [2022-01-18 01:16:24,183 INFO L276 IsEmpty]: Start isEmpty. Operand 16251 states and 46497 transitions. [2022-01-18 01:16:24,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:24,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:24,204 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] [2022-01-18 01:16:24,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-01-18 01:16:24,204 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:24,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1484252432, now seen corresponding path program 42 times [2022-01-18 01:16:24,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:24,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282001396] [2022-01-18 01:16:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:24,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:24,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:24,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282001396] [2022-01-18 01:16:24,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282001396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:24,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:24,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:16:24,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591047131] [2022-01-18 01:16:24,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:24,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:16:24,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:24,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:16:24,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:16:24,600 INFO L87 Difference]: Start difference. First operand 16251 states and 46497 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) [2022-01-18 01:16:25,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:25,241 INFO L93 Difference]: Finished difference Result 29488 states and 84748 transitions. [2022-01-18 01:16:25,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:16:25,241 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 [2022-01-18 01:16:25,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:25,294 INFO L225 Difference]: With dead ends: 29488 [2022-01-18 01:16:25,295 INFO L226 Difference]: Without dead ends: 29488 [2022-01-18 01:16:25,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1076, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:16:25,295 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 968 mSDsluCounter, 3248 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 3558 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:25,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 3558 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:16:25,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29488 states. [2022-01-18 01:16:25,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29488 to 16251. [2022-01-18 01:16:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16251 states, 16250 states have (on average 2.8613538461538464) internal successors, (46497), 16250 states have internal predecessors, (46497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16251 states to 16251 states and 46497 transitions. [2022-01-18 01:16:25,595 INFO L78 Accepts]: Start accepts. Automaton has 16251 states and 46497 transitions. Word has length 177 [2022-01-18 01:16:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:25,595 INFO L470 AbstractCegarLoop]: Abstraction has 16251 states and 46497 transitions. [2022-01-18 01:16:25,596 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) [2022-01-18 01:16:25,596 INFO L276 IsEmpty]: Start isEmpty. Operand 16251 states and 46497 transitions. [2022-01-18 01:16:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:25,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:25,617 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] [2022-01-18 01:16:25,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-01-18 01:16:25,617 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:25,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:25,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1947827174, now seen corresponding path program 26 times [2022-01-18 01:16:25,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:25,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64677116] [2022-01-18 01:16:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:25,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:25,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:25,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:25,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64677116] [2022-01-18 01:16:25,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64677116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:25,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:25,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:16:25,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740945772] [2022-01-18 01:16:25,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:25,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:16:25,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:25,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:16:25,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:16:25,929 INFO L87 Difference]: Start difference. First operand 16251 states and 46497 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) [2022-01-18 01:16:26,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:26,578 INFO L93 Difference]: Finished difference Result 29384 states and 84454 transitions. [2022-01-18 01:16:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:16:26,578 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 [2022-01-18 01:16:26,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:26,632 INFO L225 Difference]: With dead ends: 29384 [2022-01-18 01:16:26,632 INFO L226 Difference]: Without dead ends: 29384 [2022-01-18 01:16:26,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:16:26,633 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 1046 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:26,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1046 Valid, 3595 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:16:26,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29384 states. [2022-01-18 01:16:26,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29384 to 16243. [2022-01-18 01:16:26,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16243 states, 16242 states have (on average 2.8604235931535524) internal successors, (46459), 16242 states have internal predecessors, (46459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:26,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16243 states to 16243 states and 46459 transitions. [2022-01-18 01:16:26,927 INFO L78 Accepts]: Start accepts. Automaton has 16243 states and 46459 transitions. Word has length 177 [2022-01-18 01:16:26,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:26,927 INFO L470 AbstractCegarLoop]: Abstraction has 16243 states and 46459 transitions. [2022-01-18 01:16:26,927 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) [2022-01-18 01:16:26,928 INFO L276 IsEmpty]: Start isEmpty. Operand 16243 states and 46459 transitions. [2022-01-18 01:16:26,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:26,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:26,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:26,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-01-18 01:16:26,949 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:26,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:26,949 INFO L85 PathProgramCache]: Analyzing trace with hash -150426422, now seen corresponding path program 43 times [2022-01-18 01:16:26,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:26,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328596596] [2022-01-18 01:16:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:26,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:27,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:27,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:27,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328596596] [2022-01-18 01:16:27,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328596596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:27,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:27,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:16:27,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604663410] [2022-01-18 01:16:27,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:27,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:16:27,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:27,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:16:27,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:16:27,273 INFO L87 Difference]: Start difference. First operand 16243 states and 46459 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) [2022-01-18 01:16:27,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:27,969 INFO L93 Difference]: Finished difference Result 29880 states and 85850 transitions. [2022-01-18 01:16:27,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:16:27,970 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 [2022-01-18 01:16:27,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:28,024 INFO L225 Difference]: With dead ends: 29880 [2022-01-18 01:16:28,025 INFO L226 Difference]: Without dead ends: 29880 [2022-01-18 01:16:28,025 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 [2022-01-18 01:16:28,025 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 1228 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:28,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1228 Valid, 3370 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:16:28,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29880 states. [2022-01-18 01:16:28,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29880 to 16227. [2022-01-18 01:16:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16227 states, 16226 states have (on average 2.860532478737828) internal successors, (46415), 16226 states have internal predecessors, (46415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16227 states to 16227 states and 46415 transitions. [2022-01-18 01:16:28,339 INFO L78 Accepts]: Start accepts. Automaton has 16227 states and 46415 transitions. Word has length 177 [2022-01-18 01:16:28,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:28,340 INFO L470 AbstractCegarLoop]: Abstraction has 16227 states and 46415 transitions. [2022-01-18 01:16:28,340 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) [2022-01-18 01:16:28,340 INFO L276 IsEmpty]: Start isEmpty. Operand 16227 states and 46415 transitions. [2022-01-18 01:16:28,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:28,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:28,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:28,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-01-18 01:16:28,361 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:28,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:28,361 INFO L85 PathProgramCache]: Analyzing trace with hash 144455970, now seen corresponding path program 27 times [2022-01-18 01:16:28,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:28,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82130237] [2022-01-18 01:16:28,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:28,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:28,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:28,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82130237] [2022-01-18 01:16:28,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82130237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:28,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:28,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:16:28,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433792085] [2022-01-18 01:16:28,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:28,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:16:28,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:28,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:16:28,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:16:28,770 INFO L87 Difference]: Start difference. First operand 16227 states and 46415 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) [2022-01-18 01:16:29,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:29,507 INFO L93 Difference]: Finished difference Result 29448 states and 84630 transitions. [2022-01-18 01:16:29,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:16:29,507 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 [2022-01-18 01:16:29,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:29,562 INFO L225 Difference]: With dead ends: 29448 [2022-01-18 01:16:29,562 INFO L226 Difference]: Without dead ends: 29448 [2022-01-18 01:16:29,562 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 [2022-01-18 01:16:29,562 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 1002 mSDsluCounter, 3376 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:29,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1002 Valid, 3692 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:16:29,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29448 states. [2022-01-18 01:16:29,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29448 to 16243. [2022-01-18 01:16:29,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16243 states, 16242 states have (on average 2.8604235931535524) internal successors, (46459), 16242 states have internal predecessors, (46459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16243 states to 16243 states and 46459 transitions. [2022-01-18 01:16:29,864 INFO L78 Accepts]: Start accepts. Automaton has 16243 states and 46459 transitions. Word has length 177 [2022-01-18 01:16:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:29,864 INFO L470 AbstractCegarLoop]: Abstraction has 16243 states and 46459 transitions. [2022-01-18 01:16:29,864 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) [2022-01-18 01:16:29,864 INFO L276 IsEmpty]: Start isEmpty. Operand 16243 states and 46459 transitions. [2022-01-18 01:16:29,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:29,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:29,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:29,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-01-18 01:16:29,886 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:29,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:29,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1949907452, now seen corresponding path program 28 times [2022-01-18 01:16:29,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:29,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749041717] [2022-01-18 01:16:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:29,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:30,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:30,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749041717] [2022-01-18 01:16:30,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749041717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:30,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:30,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:16:30,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603741422] [2022-01-18 01:16:30,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:30,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:16:30,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:30,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:16:30,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:16:30,247 INFO L87 Difference]: Start difference. First operand 16243 states and 46459 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) [2022-01-18 01:16:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:31,003 INFO L93 Difference]: Finished difference Result 30312 states and 87102 transitions. [2022-01-18 01:16:31,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:16:31,003 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 [2022-01-18 01:16:31,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:31,060 INFO L225 Difference]: With dead ends: 30312 [2022-01-18 01:16:31,060 INFO L226 Difference]: Without dead ends: 30312 [2022-01-18 01:16:31,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 01:16:31,060 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 1030 mSDsluCounter, 3459 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 3814 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:31,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1030 Valid, 3814 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:16:31,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30312 states. [2022-01-18 01:16:31,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30312 to 16187. [2022-01-18 01:16:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16187 states, 16186 states have (on average 2.8593228716174472) internal successors, (46281), 16186 states have internal predecessors, (46281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16187 states to 16187 states and 46281 transitions. [2022-01-18 01:16:31,365 INFO L78 Accepts]: Start accepts. Automaton has 16187 states and 46281 transitions. Word has length 177 [2022-01-18 01:16:31,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:31,365 INFO L470 AbstractCegarLoop]: Abstraction has 16187 states and 46281 transitions. [2022-01-18 01:16:31,365 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) [2022-01-18 01:16:31,365 INFO L276 IsEmpty]: Start isEmpty. Operand 16187 states and 46281 transitions. [2022-01-18 01:16:31,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:31,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:31,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:31,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-01-18 01:16:31,386 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:31,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:31,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1878945178, now seen corresponding path program 38 times [2022-01-18 01:16:31,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:31,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743007345] [2022-01-18 01:16:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:31,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:31,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:31,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743007345] [2022-01-18 01:16:31,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743007345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:31,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:31,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:16:31,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296290646] [2022-01-18 01:16:31,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:31,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:16:31,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:31,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:16:31,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:16:31,709 INFO L87 Difference]: Start difference. First operand 16187 states and 46281 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) [2022-01-18 01:16:32,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:32,392 INFO L93 Difference]: Finished difference Result 29694 states and 85474 transitions. [2022-01-18 01:16:32,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:16:32,392 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 [2022-01-18 01:16:32,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:32,450 INFO L225 Difference]: With dead ends: 29694 [2022-01-18 01:16:32,450 INFO L226 Difference]: Without dead ends: 29694 [2022-01-18 01:16:32,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=402, Invalid=1238, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 01:16:32,450 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1118 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 3044 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:32,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 3044 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:16:32,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29694 states. [2022-01-18 01:16:32,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29694 to 16203. [2022-01-18 01:16:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16203 states, 16202 states have (on average 2.859708677940995) internal successors, (46333), 16202 states have internal predecessors, (46333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:32,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16203 states to 16203 states and 46333 transitions. [2022-01-18 01:16:32,769 INFO L78 Accepts]: Start accepts. Automaton has 16203 states and 46333 transitions. Word has length 177 [2022-01-18 01:16:32,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:32,769 INFO L470 AbstractCegarLoop]: Abstraction has 16203 states and 46333 transitions. [2022-01-18 01:16:32,769 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) [2022-01-18 01:16:32,770 INFO L276 IsEmpty]: Start isEmpty. Operand 16203 states and 46333 transitions. [2022-01-18 01:16:32,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:32,790 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:32,790 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] [2022-01-18 01:16:32,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-01-18 01:16:32,791 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:32,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:32,791 INFO L85 PathProgramCache]: Analyzing trace with hash -220399678, now seen corresponding path program 44 times [2022-01-18 01:16:32,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:32,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139293249] [2022-01-18 01:16:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:32,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:33,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:33,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139293249] [2022-01-18 01:16:33,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139293249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:33,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:33,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:16:33,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713215163] [2022-01-18 01:16:33,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:33,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:16:33,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:33,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:16:33,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:16:33,103 INFO L87 Difference]: Start difference. First operand 16203 states and 46333 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) [2022-01-18 01:16:33,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:33,847 INFO L93 Difference]: Finished difference Result 29484 states and 84792 transitions. [2022-01-18 01:16:33,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:16:33,847 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 [2022-01-18 01:16:33,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:33,901 INFO L225 Difference]: With dead ends: 29484 [2022-01-18 01:16:33,901 INFO L226 Difference]: Without dead ends: 29484 [2022-01-18 01:16:33,901 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 [2022-01-18 01:16:33,901 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1216 mSDsluCounter, 3443 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 3716 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:33,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1216 Valid, 3716 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:16:33,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29484 states. [2022-01-18 01:16:34,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29484 to 16235. [2022-01-18 01:16:34,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16235 states, 16234 states have (on average 2.859492423309104) internal successors, (46421), 16234 states have internal predecessors, (46421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:34,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16235 states to 16235 states and 46421 transitions. [2022-01-18 01:16:34,228 INFO L78 Accepts]: Start accepts. Automaton has 16235 states and 46421 transitions. Word has length 177 [2022-01-18 01:16:34,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:34,228 INFO L470 AbstractCegarLoop]: Abstraction has 16235 states and 46421 transitions. [2022-01-18 01:16:34,228 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) [2022-01-18 01:16:34,228 INFO L276 IsEmpty]: Start isEmpty. Operand 16235 states and 46421 transitions. [2022-01-18 01:16:34,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:34,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:34,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:34,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-01-18 01:16:34,250 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:34,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:34,250 INFO L85 PathProgramCache]: Analyzing trace with hash 186274222, now seen corresponding path program 45 times [2022-01-18 01:16:34,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:34,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404779693] [2022-01-18 01:16:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:34,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:34,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:34,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404779693] [2022-01-18 01:16:34,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404779693] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:16:34,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646973594] [2022-01-18 01:16:34,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:16:34,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:16:34,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:16:34,573 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) [2022-01-18 01:16:34,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 01:16:34,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 01:16:34,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:16:34,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-18 01:16:34,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:16:35,228 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 [2022-01-18 01:16:35,355 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 [2022-01-18 01:16:35,402 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 [2022-01-18 01:16:35,674 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-18 01:16:35,674 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 26 treesize of output 10 [2022-01-18 01:16:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:16:35,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:16:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:36,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646973594] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:16:36,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:16:36,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 9] total 47 [2022-01-18 01:16:36,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530142431] [2022-01-18 01:16:36,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:16:36,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 01:16:36,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:36,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 01:16:36,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1934, Unknown=1, NotChecked=0, Total=2162 [2022-01-18 01:16:36,574 INFO L87 Difference]: Start difference. First operand 16235 states and 46421 transitions. Second operand has 47 states, 47 states have (on average 8.127659574468085) internal successors, (382), 47 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) [2022-01-18 01:16:38,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:38,995 INFO L93 Difference]: Finished difference Result 31961 states and 92059 transitions. [2022-01-18 01:16:38,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 01:16:38,995 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.127659574468085) internal successors, (382), 47 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 [2022-01-18 01:16:38,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:39,055 INFO L225 Difference]: With dead ends: 31961 [2022-01-18 01:16:39,055 INFO L226 Difference]: Without dead ends: 31961 [2022-01-18 01:16:39,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1470, Invalid=5669, Unknown=1, NotChecked=0, Total=7140 [2022-01-18 01:16:39,056 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 2453 mSDsluCounter, 7978 mSDsCounter, 0 mSdLazyCounter, 2307 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2453 SdHoareTripleChecker+Valid, 8237 SdHoareTripleChecker+Invalid, 3104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 757 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:39,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2453 Valid, 8237 Invalid, 3104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2307 Invalid, 0 Unknown, 757 Unchecked, 0.8s Time] [2022-01-18 01:16:39,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31961 states. [2022-01-18 01:16:39,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31961 to 16203. [2022-01-18 01:16:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16203 states, 16202 states have (on average 2.859708677940995) internal successors, (46333), 16202 states have internal predecessors, (46333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:39,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16203 states to 16203 states and 46333 transitions. [2022-01-18 01:16:39,454 INFO L78 Accepts]: Start accepts. Automaton has 16203 states and 46333 transitions. Word has length 177 [2022-01-18 01:16:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:39,454 INFO L470 AbstractCegarLoop]: Abstraction has 16203 states and 46333 transitions. [2022-01-18 01:16:39,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.127659574468085) internal successors, (382), 47 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) [2022-01-18 01:16:39,454 INFO L276 IsEmpty]: Start isEmpty. Operand 16203 states and 46333 transitions. [2022-01-18 01:16:39,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:39,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:39,475 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:39,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-01-18 01:16:39,676 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,SelfDestructingSolverStorable178 [2022-01-18 01:16:39,676 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:39,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:39,677 INFO L85 PathProgramCache]: Analyzing trace with hash -577479552, now seen corresponding path program 39 times [2022-01-18 01:16:39,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:39,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498374393] [2022-01-18 01:16:39,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:39,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:39,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:39,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:39,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498374393] [2022-01-18 01:16:39,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498374393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:39,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:39,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:16:39,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780343627] [2022-01-18 01:16:39,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:39,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:16:39,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:39,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:16:39,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:16:39,996 INFO L87 Difference]: Start difference. First operand 16203 states and 46333 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) [2022-01-18 01:16:40,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:40,599 INFO L93 Difference]: Finished difference Result 29506 states and 84840 transitions. [2022-01-18 01:16:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:16:40,600 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 [2022-01-18 01:16:40,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:40,656 INFO L225 Difference]: With dead ends: 29506 [2022-01-18 01:16:40,656 INFO L226 Difference]: Without dead ends: 29506 [2022-01-18 01:16:40,657 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 [2022-01-18 01:16:40,657 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1181 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:40,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 2693 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:16:40,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29506 states. [2022-01-18 01:16:40,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29506 to 16219. [2022-01-18 01:16:40,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16219 states, 16218 states have (on average 2.860587002096436) internal successors, (46393), 16218 states have internal predecessors, (46393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16219 states to 16219 states and 46393 transitions. [2022-01-18 01:16:40,959 INFO L78 Accepts]: Start accepts. Automaton has 16219 states and 46393 transitions. Word has length 177 [2022-01-18 01:16:40,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:40,960 INFO L470 AbstractCegarLoop]: Abstraction has 16219 states and 46393 transitions. [2022-01-18 01:16:40,960 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) [2022-01-18 01:16:40,960 INFO L276 IsEmpty]: Start isEmpty. Operand 16219 states and 46393 transitions. [2022-01-18 01:16:40,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:40,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:40,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:40,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-01-18 01:16:40,981 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:40,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:40,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1630312826, now seen corresponding path program 46 times [2022-01-18 01:16:40,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:40,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537981012] [2022-01-18 01:16:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:40,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:41,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:41,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:41,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537981012] [2022-01-18 01:16:41,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537981012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:41,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:41,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:16:41,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269335206] [2022-01-18 01:16:41,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:41,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:16:41,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:41,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:16:41,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:16:41,314 INFO L87 Difference]: Start difference. First operand 16219 states and 46393 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) [2022-01-18 01:16:41,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:41,941 INFO L93 Difference]: Finished difference Result 29468 states and 84740 transitions. [2022-01-18 01:16:41,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:16:41,942 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 [2022-01-18 01:16:41,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:41,997 INFO L225 Difference]: With dead ends: 29468 [2022-01-18 01:16:41,997 INFO L226 Difference]: Without dead ends: 29468 [2022-01-18 01:16:41,997 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 [2022-01-18 01:16:41,997 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1205 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:41,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1205 Valid, 2888 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:16:42,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29468 states. [2022-01-18 01:16:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29468 to 16227. [2022-01-18 01:16:42,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16227 states, 16226 states have (on average 2.860532478737828) internal successors, (46415), 16226 states have internal predecessors, (46415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16227 states to 16227 states and 46415 transitions. [2022-01-18 01:16:42,290 INFO L78 Accepts]: Start accepts. Automaton has 16227 states and 46415 transitions. Word has length 177 [2022-01-18 01:16:42,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:42,290 INFO L470 AbstractCegarLoop]: Abstraction has 16227 states and 46415 transitions. [2022-01-18 01:16:42,290 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) [2022-01-18 01:16:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 16227 states and 46415 transitions. [2022-01-18 01:16:42,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:42,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:42,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:42,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-01-18 01:16:42,311 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:42,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:42,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1902844224, now seen corresponding path program 47 times [2022-01-18 01:16:42,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:42,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726520027] [2022-01-18 01:16:42,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:42,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:42,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:42,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726520027] [2022-01-18 01:16:42,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726520027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:42,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:42,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:16:42,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910972355] [2022-01-18 01:16:42,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:42,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:16:42,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:42,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:16:42,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:16:42,659 INFO L87 Difference]: Start difference. First operand 16227 states and 46415 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) [2022-01-18 01:16:43,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:43,299 INFO L93 Difference]: Finished difference Result 29774 states and 85618 transitions. [2022-01-18 01:16:43,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:16:43,299 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 [2022-01-18 01:16:43,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:43,352 INFO L225 Difference]: With dead ends: 29774 [2022-01-18 01:16:43,352 INFO L226 Difference]: Without dead ends: 29774 [2022-01-18 01:16:43,352 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 [2022-01-18 01:16:43,352 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1263 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 3176 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:43,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 3176 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:16:43,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29774 states. [2022-01-18 01:16:43,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29774 to 16219. [2022-01-18 01:16:43,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16219 states, 16218 states have (on average 2.860587002096436) internal successors, (46393), 16218 states have internal predecessors, (46393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:43,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16219 states to 16219 states and 46393 transitions. [2022-01-18 01:16:43,649 INFO L78 Accepts]: Start accepts. Automaton has 16219 states and 46393 transitions. Word has length 177 [2022-01-18 01:16:43,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:43,649 INFO L470 AbstractCegarLoop]: Abstraction has 16219 states and 46393 transitions. [2022-01-18 01:16:43,649 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) [2022-01-18 01:16:43,649 INFO L276 IsEmpty]: Start isEmpty. Operand 16219 states and 46393 transitions. [2022-01-18 01:16:43,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:43,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:43,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:43,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-01-18 01:16:43,670 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:43,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:43,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1439269482, now seen corresponding path program 29 times [2022-01-18 01:16:43,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:43,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174401419] [2022-01-18 01:16:43,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:43,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:43,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:43,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174401419] [2022-01-18 01:16:43,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174401419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:43,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:43,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:16:43,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239699094] [2022-01-18 01:16:43,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:43,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:16:43,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:43,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:16:43,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:16:43,993 INFO L87 Difference]: Start difference. First operand 16219 states and 46393 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) [2022-01-18 01:16:44,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:44,608 INFO L93 Difference]: Finished difference Result 29670 states and 85324 transitions. [2022-01-18 01:16:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:16:44,609 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 [2022-01-18 01:16:44,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:44,665 INFO L225 Difference]: With dead ends: 29670 [2022-01-18 01:16:44,665 INFO L226 Difference]: Without dead ends: 29670 [2022-01-18 01:16:44,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:16:44,665 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 950 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 3098 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:44,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 3098 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:16:44,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29670 states. [2022-01-18 01:16:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29670 to 16195. [2022-01-18 01:16:44,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16195 states, 16194 states have (on average 2.8592688650117326) internal successors, (46303), 16194 states have internal predecessors, (46303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16195 states to 16195 states and 46303 transitions. [2022-01-18 01:16:44,965 INFO L78 Accepts]: Start accepts. Automaton has 16195 states and 46303 transitions. Word has length 177 [2022-01-18 01:16:44,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:44,965 INFO L470 AbstractCegarLoop]: Abstraction has 16195 states and 46303 transitions. [2022-01-18 01:16:44,965 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) [2022-01-18 01:16:44,966 INFO L276 IsEmpty]: Start isEmpty. Operand 16195 states and 46303 transitions. [2022-01-18 01:16:44,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:44,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:44,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:44,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-01-18 01:16:44,986 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:44,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:44,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2041566512, now seen corresponding path program 40 times [2022-01-18 01:16:44,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:44,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305440997] [2022-01-18 01:16:44,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:44,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:45,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:45,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:45,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305440997] [2022-01-18 01:16:45,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305440997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:45,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:45,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:16:45,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571866] [2022-01-18 01:16:45,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:45,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:16:45,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:45,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:16:45,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:16:45,436 INFO L87 Difference]: Start difference. First operand 16195 states and 46303 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) [2022-01-18 01:16:46,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:46,112 INFO L93 Difference]: Finished difference Result 29490 states and 84764 transitions. [2022-01-18 01:16:46,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:16:46,112 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 [2022-01-18 01:16:46,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:46,167 INFO L225 Difference]: With dead ends: 29490 [2022-01-18 01:16:46,167 INFO L226 Difference]: Without dead ends: 29490 [2022-01-18 01:16:46,168 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 [2022-01-18 01:16:46,168 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1042 mSDsluCounter, 3013 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:46,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 3303 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:16:46,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29490 states. [2022-01-18 01:16:46,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29490 to 16227. [2022-01-18 01:16:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16227 states, 16226 states have (on average 2.860532478737828) internal successors, (46415), 16226 states have internal predecessors, (46415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16227 states to 16227 states and 46415 transitions. [2022-01-18 01:16:46,549 INFO L78 Accepts]: Start accepts. Automaton has 16227 states and 46415 transitions. Word has length 177 [2022-01-18 01:16:46,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:46,549 INFO L470 AbstractCegarLoop]: Abstraction has 16227 states and 46415 transitions. [2022-01-18 01:16:46,550 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) [2022-01-18 01:16:46,550 INFO L276 IsEmpty]: Start isEmpty. Operand 16227 states and 46415 transitions. [2022-01-18 01:16:46,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:46,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:46,571 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:46,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-01-18 01:16:46,572 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:46,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:46,572 INFO L85 PathProgramCache]: Analyzing trace with hash 988733238, now seen corresponding path program 48 times [2022-01-18 01:16:46,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:46,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666278978] [2022-01-18 01:16:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:46,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:46,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:46,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666278978] [2022-01-18 01:16:46,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666278978] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:46,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:46,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:16:46,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487477740] [2022-01-18 01:16:46,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:46,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:16:46,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:46,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:16:46,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:16:46,908 INFO L87 Difference]: Start difference. First operand 16227 states and 46415 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) [2022-01-18 01:16:47,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:47,617 INFO L93 Difference]: Finished difference Result 29460 states and 84686 transitions. [2022-01-18 01:16:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:16:47,618 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 [2022-01-18 01:16:47,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:47,675 INFO L225 Difference]: With dead ends: 29460 [2022-01-18 01:16:47,675 INFO L226 Difference]: Without dead ends: 29460 [2022-01-18 01:16:47,675 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 [2022-01-18 01:16:47,676 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 1060 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 3484 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:47,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1060 Valid, 3484 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:16:47,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29460 states. [2022-01-18 01:16:47,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29460 to 16243. [2022-01-18 01:16:47,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16243 states, 16242 states have (on average 2.8604235931535524) internal successors, (46459), 16242 states have internal predecessors, (46459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:47,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16243 states to 16243 states and 46459 transitions. [2022-01-18 01:16:47,980 INFO L78 Accepts]: Start accepts. Automaton has 16243 states and 46459 transitions. Word has length 177 [2022-01-18 01:16:47,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:47,980 INFO L470 AbstractCegarLoop]: Abstraction has 16243 states and 46459 transitions. [2022-01-18 01:16:47,980 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) [2022-01-18 01:16:47,981 INFO L276 IsEmpty]: Start isEmpty. Operand 16243 states and 46459 transitions. [2022-01-18 01:16:48,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:48,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:48,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:48,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-01-18 01:16:48,002 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:48,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash 716201840, now seen corresponding path program 49 times [2022-01-18 01:16:48,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:48,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942616425] [2022-01-18 01:16:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:48,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:48,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:48,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942616425] [2022-01-18 01:16:48,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942616425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:48,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:48,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:16:48,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329349478] [2022-01-18 01:16:48,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:48,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:16:48,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:48,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:16:48,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:16:48,332 INFO L87 Difference]: Start difference. First operand 16243 states and 46459 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) [2022-01-18 01:16:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:48,985 INFO L93 Difference]: Finished difference Result 29782 states and 85608 transitions. [2022-01-18 01:16:48,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:16:48,986 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 [2022-01-18 01:16:48,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:49,040 INFO L225 Difference]: With dead ends: 29782 [2022-01-18 01:16:49,040 INFO L226 Difference]: Without dead ends: 29782 [2022-01-18 01:16:49,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 01:16:49,041 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 850 mSDsluCounter, 2814 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 3124 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:49,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 3124 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:16:49,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29782 states. [2022-01-18 01:16:49,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29782 to 16243. [2022-01-18 01:16:49,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16243 states, 16242 states have (on average 2.8604235931535524) internal successors, (46459), 16242 states have internal predecessors, (46459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16243 states to 16243 states and 46459 transitions. [2022-01-18 01:16:49,342 INFO L78 Accepts]: Start accepts. Automaton has 16243 states and 46459 transitions. Word has length 177 [2022-01-18 01:16:49,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:49,342 INFO L470 AbstractCegarLoop]: Abstraction has 16243 states and 46459 transitions. [2022-01-18 01:16:49,342 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) [2022-01-18 01:16:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand 16243 states and 46459 transitions. [2022-01-18 01:16:49,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:49,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:49,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:49,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-01-18 01:16:49,364 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:49,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:49,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1179776582, now seen corresponding path program 30 times [2022-01-18 01:16:49,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:49,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566127274] [2022-01-18 01:16:49,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:49,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:49,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:49,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:49,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566127274] [2022-01-18 01:16:49,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566127274] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:49,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:49,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:16:49,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352978497] [2022-01-18 01:16:49,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:49,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:16:49,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:49,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:16:49,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:16:49,688 INFO L87 Difference]: Start difference. First operand 16243 states and 46459 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) [2022-01-18 01:16:50,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:50,374 INFO L93 Difference]: Finished difference Result 29686 states and 85336 transitions. [2022-01-18 01:16:50,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:16:50,374 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 [2022-01-18 01:16:50,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:50,430 INFO L225 Difference]: With dead ends: 29686 [2022-01-18 01:16:50,430 INFO L226 Difference]: Without dead ends: 29686 [2022-01-18 01:16:50,430 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 [2022-01-18 01:16:50,431 INFO L933 BasicCegarLoop]: 352 mSDtfsCounter, 1032 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 3408 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:50,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 3408 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:16:50,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29686 states. [2022-01-18 01:16:50,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29686 to 16235. [2022-01-18 01:16:50,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16235 states, 16234 states have (on average 2.859492423309104) internal successors, (46421), 16234 states have internal predecessors, (46421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:50,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16235 states to 16235 states and 46421 transitions. [2022-01-18 01:16:50,733 INFO L78 Accepts]: Start accepts. Automaton has 16235 states and 46421 transitions. Word has length 177 [2022-01-18 01:16:50,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:50,733 INFO L470 AbstractCegarLoop]: Abstraction has 16235 states and 46421 transitions. [2022-01-18 01:16:50,734 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) [2022-01-18 01:16:50,734 INFO L276 IsEmpty]: Start isEmpty. Operand 16235 states and 46421 transitions. [2022-01-18 01:16:50,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:50,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:50,756 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] [2022-01-18 01:16:50,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-01-18 01:16:50,756 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:50,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:50,756 INFO L85 PathProgramCache]: Analyzing trace with hash -918477014, now seen corresponding path program 50 times [2022-01-18 01:16:50,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:50,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107226063] [2022-01-18 01:16:50,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:50,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:51,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:51,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107226063] [2022-01-18 01:16:51,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107226063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:51,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:51,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:16:51,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178049111] [2022-01-18 01:16:51,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:51,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:16:51,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:51,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:16:51,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:16:51,098 INFO L87 Difference]: Start difference. First operand 16235 states and 46421 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) [2022-01-18 01:16:51,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:51,789 INFO L93 Difference]: Finished difference Result 30118 states and 86540 transitions. [2022-01-18 01:16:51,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:16:51,790 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 [2022-01-18 01:16:51,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:51,846 INFO L225 Difference]: With dead ends: 30118 [2022-01-18 01:16:51,846 INFO L226 Difference]: Without dead ends: 30118 [2022-01-18 01:16:51,847 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 [2022-01-18 01:16:51,847 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1103 mSDsluCounter, 3078 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:51,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 3396 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:16:51,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30118 states. [2022-01-18 01:16:52,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30118 to 16219. [2022-01-18 01:16:52,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16219 states, 16218 states have (on average 2.8596004439511655) internal successors, (46377), 16218 states have internal predecessors, (46377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:52,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16219 states to 16219 states and 46377 transitions. [2022-01-18 01:16:52,239 INFO L78 Accepts]: Start accepts. Automaton has 16219 states and 46377 transitions. Word has length 177 [2022-01-18 01:16:52,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:52,239 INFO L470 AbstractCegarLoop]: Abstraction has 16219 states and 46377 transitions. [2022-01-18 01:16:52,239 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) [2022-01-18 01:16:52,239 INFO L276 IsEmpty]: Start isEmpty. Operand 16219 states and 46377 transitions. [2022-01-18 01:16:52,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:52,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:52,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:52,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-01-18 01:16:52,260 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:52,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:52,262 INFO L85 PathProgramCache]: Analyzing trace with hash -623594622, now seen corresponding path program 31 times [2022-01-18 01:16:52,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:52,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963749736] [2022-01-18 01:16:52,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:52,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:52,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:52,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963749736] [2022-01-18 01:16:52,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963749736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:52,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:52,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:16:52,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441465790] [2022-01-18 01:16:52,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:52,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:16:52,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:52,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:16:52,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:16:52,572 INFO L87 Difference]: Start difference. First operand 16219 states and 46377 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) [2022-01-18 01:16:53,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:53,230 INFO L93 Difference]: Finished difference Result 29694 states and 85342 transitions. [2022-01-18 01:16:53,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:16:53,230 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 [2022-01-18 01:16:53,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:53,283 INFO L225 Difference]: With dead ends: 29694 [2022-01-18 01:16:53,283 INFO L226 Difference]: Without dead ends: 29694 [2022-01-18 01:16:53,283 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 [2022-01-18 01:16:53,283 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1125 mSDsluCounter, 2947 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:53,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 3254 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:16:53,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29694 states. [2022-01-18 01:16:53,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29694 to 16235. [2022-01-18 01:16:53,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16235 states, 16234 states have (on average 2.859492423309104) internal successors, (46421), 16234 states have internal predecessors, (46421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:53,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16235 states to 16235 states and 46421 transitions. [2022-01-18 01:16:53,581 INFO L78 Accepts]: Start accepts. Automaton has 16235 states and 46421 transitions. Word has length 177 [2022-01-18 01:16:53,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:53,581 INFO L470 AbstractCegarLoop]: Abstraction has 16235 states and 46421 transitions. [2022-01-18 01:16:53,581 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) [2022-01-18 01:16:53,581 INFO L276 IsEmpty]: Start isEmpty. Operand 16235 states and 46421 transitions. [2022-01-18 01:16:53,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:53,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:53,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:53,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-01-18 01:16:53,602 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:53,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:53,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1577009252, now seen corresponding path program 32 times [2022-01-18 01:16:53,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:53,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685785828] [2022-01-18 01:16:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:53,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:53,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:53,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685785828] [2022-01-18 01:16:53,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685785828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:53,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:53,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:16:53,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77375302] [2022-01-18 01:16:53,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:53,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:16:53,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:53,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:16:53,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:16:53,920 INFO L87 Difference]: Start difference. First operand 16235 states and 46421 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) [2022-01-18 01:16:54,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:54,801 INFO L93 Difference]: Finished difference Result 30558 states and 87814 transitions. [2022-01-18 01:16:54,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:16:54,801 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 [2022-01-18 01:16:54,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:54,858 INFO L225 Difference]: With dead ends: 30558 [2022-01-18 01:16:54,858 INFO L226 Difference]: Without dead ends: 30558 [2022-01-18 01:16:54,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 01:16:54,859 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 851 mSDsluCounter, 4461 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 4783 SdHoareTripleChecker+Invalid, 1416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:54,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 4783 Invalid, 1416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1398 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:16:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30558 states. [2022-01-18 01:16:55,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30558 to 16171. [2022-01-18 01:16:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16171 states, 16170 states have (on average 2.859431045145331) internal successors, (46237), 16170 states have internal predecessors, (46237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16171 states to 16171 states and 46237 transitions. [2022-01-18 01:16:55,174 INFO L78 Accepts]: Start accepts. Automaton has 16171 states and 46237 transitions. Word has length 177 [2022-01-18 01:16:55,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:55,175 INFO L470 AbstractCegarLoop]: Abstraction has 16171 states and 46237 transitions. [2022-01-18 01:16:55,175 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) [2022-01-18 01:16:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 16171 states and 46237 transitions. [2022-01-18 01:16:55,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:55,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:55,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:55,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-01-18 01:16:55,196 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:55,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:55,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2110443726, now seen corresponding path program 41 times [2022-01-18 01:16:55,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:55,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604956321] [2022-01-18 01:16:55,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:55,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:55,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:55,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:55,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604956321] [2022-01-18 01:16:55,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604956321] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:55,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:55,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:16:55,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238566052] [2022-01-18 01:16:55,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:55,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:16:55,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:55,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:16:55,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:16:55,525 INFO L87 Difference]: Start difference. First operand 16171 states and 46237 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) [2022-01-18 01:16:56,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:56,281 INFO L93 Difference]: Finished difference Result 28848 states and 82782 transitions. [2022-01-18 01:16:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:16:56,282 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 [2022-01-18 01:16:56,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:56,335 INFO L225 Difference]: With dead ends: 28848 [2022-01-18 01:16:56,335 INFO L226 Difference]: Without dead ends: 28848 [2022-01-18 01:16:56,336 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 [2022-01-18 01:16:56,336 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 1431 mSDsluCounter, 3536 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:56,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 3891 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:16:56,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28848 states. [2022-01-18 01:16:56,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28848 to 16123. [2022-01-18 01:16:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16123 states, 16122 states have (on average 2.859756853988339) internal successors, (46105), 16122 states have internal predecessors, (46105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:56,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16123 states to 16123 states and 46105 transitions. [2022-01-18 01:16:56,628 INFO L78 Accepts]: Start accepts. Automaton has 16123 states and 46105 transitions. Word has length 177 [2022-01-18 01:16:56,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:56,628 INFO L470 AbstractCegarLoop]: Abstraction has 16123 states and 46105 transitions. [2022-01-18 01:16:56,628 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) [2022-01-18 01:16:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand 16123 states and 46105 transitions. [2022-01-18 01:16:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:56,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:56,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:56,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-01-18 01:16:56,650 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:56,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:56,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1312300756, now seen corresponding path program 42 times [2022-01-18 01:16:56,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:56,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048812963] [2022-01-18 01:16:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:56,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:56,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:56,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048812963] [2022-01-18 01:16:56,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048812963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:56,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:56,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:16:56,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959950687] [2022-01-18 01:16:56,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:56,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:16:56,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:56,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:16:56,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:16:56,995 INFO L87 Difference]: Start difference. First operand 16123 states and 46105 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) [2022-01-18 01:16:57,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:57,770 INFO L93 Difference]: Finished difference Result 29236 states and 84046 transitions. [2022-01-18 01:16:57,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:16:57,770 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 [2022-01-18 01:16:57,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:57,823 INFO L225 Difference]: With dead ends: 29236 [2022-01-18 01:16:57,823 INFO L226 Difference]: Without dead ends: 29236 [2022-01-18 01:16:57,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 01:16:57,824 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 1041 mSDsluCounter, 3738 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 4050 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:57,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 4050 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:16:57,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29236 states. [2022-01-18 01:16:58,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29236 to 16131. [2022-01-18 01:16:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16131 states, 16130 states have (on average 2.8601983880967143) internal successors, (46135), 16130 states have internal predecessors, (46135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:58,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16131 states to 16131 states and 46135 transitions. [2022-01-18 01:16:58,239 INFO L78 Accepts]: Start accepts. Automaton has 16131 states and 46135 transitions. Word has length 177 [2022-01-18 01:16:58,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:58,239 INFO L470 AbstractCegarLoop]: Abstraction has 16131 states and 46135 transitions. [2022-01-18 01:16:58,240 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) [2022-01-18 01:16:58,240 INFO L276 IsEmpty]: Start isEmpty. Operand 16131 states and 46135 transitions. [2022-01-18 01:16:58,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:58,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:58,261 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] [2022-01-18 01:16:58,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-01-18 01:16:58,262 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:58,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:58,263 INFO L85 PathProgramCache]: Analyzing trace with hash 883321684, now seen corresponding path program 51 times [2022-01-18 01:16:58,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:58,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199335104] [2022-01-18 01:16:58,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:58,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:58,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:58,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:58,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199335104] [2022-01-18 01:16:58,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199335104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:16:58,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:16:58,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:16:58,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92844581] [2022-01-18 01:16:58,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:16:58,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:16:58,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:16:58,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:16:58,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:16:58,568 INFO L87 Difference]: Start difference. First operand 16131 states and 46135 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) [2022-01-18 01:16:59,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:16:59,258 INFO L93 Difference]: Finished difference Result 28908 states and 83044 transitions. [2022-01-18 01:16:59,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:16:59,259 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 [2022-01-18 01:16:59,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:16:59,314 INFO L225 Difference]: With dead ends: 28908 [2022-01-18 01:16:59,314 INFO L226 Difference]: Without dead ends: 28908 [2022-01-18 01:16:59,314 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 [2022-01-18 01:16:59,314 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 1031 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 3194 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:16:59,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 3194 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:16:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28908 states. [2022-01-18 01:16:59,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28908 to 16163. [2022-01-18 01:16:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16163 states, 16162 states have (on average 2.859980200470239) internal successors, (46223), 16162 states have internal predecessors, (46223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:16:59,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16163 states to 16163 states and 46223 transitions. [2022-01-18 01:16:59,609 INFO L78 Accepts]: Start accepts. Automaton has 16163 states and 46223 transitions. Word has length 177 [2022-01-18 01:16:59,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:16:59,609 INFO L470 AbstractCegarLoop]: Abstraction has 16163 states and 46223 transitions. [2022-01-18 01:16:59,609 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) [2022-01-18 01:16:59,609 INFO L276 IsEmpty]: Start isEmpty. Operand 16163 states and 46223 transitions. [2022-01-18 01:16:59,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:16:59,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:16:59,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:16:59,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-01-18 01:16:59,631 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:16:59,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:16:59,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1289995584, now seen corresponding path program 52 times [2022-01-18 01:16:59,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:16:59,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269915529] [2022-01-18 01:16:59,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:16:59,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:16:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:16:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:16:59,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:16:59,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269915529] [2022-01-18 01:16:59,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269915529] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:16:59,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538749437] [2022-01-18 01:16:59,946 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:16:59,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:16:59,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:16:59,947 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) [2022-01-18 01:16:59,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 01:17:00,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:17:00,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:17:00,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 01:17:00,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:17:00,602 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 [2022-01-18 01:17:00,725 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 [2022-01-18 01:17:00,772 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 [2022-01-18 01:17:01,073 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:17:01,073 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 [2022-01-18 01:17:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:17:01,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:17:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:02,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538749437] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:17:02,516 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:17:02,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 9] total 47 [2022-01-18 01:17:02,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564631900] [2022-01-18 01:17:02,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:17:02,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 01:17:02,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:02,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 01:17:02,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1944, Unknown=2, NotChecked=0, Total=2162 [2022-01-18 01:17:02,518 INFO L87 Difference]: Start difference. First operand 16163 states and 46223 transitions. Second operand has 47 states, 47 states have (on average 8.48936170212766) internal successors, (399), 47 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) [2022-01-18 01:17:05,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:05,720 INFO L93 Difference]: Finished difference Result 39678 states and 114176 transitions. [2022-01-18 01:17:05,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 01:17:05,721 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 8.48936170212766) internal successors, (399), 47 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 [2022-01-18 01:17:05,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:05,798 INFO L225 Difference]: With dead ends: 39678 [2022-01-18 01:17:05,798 INFO L226 Difference]: Without dead ends: 39678 [2022-01-18 01:17:05,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 333 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1891 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1832, Invalid=7096, Unknown=2, NotChecked=0, Total=8930 [2022-01-18 01:17:05,799 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 2912 mSDsluCounter, 10226 mSDsCounter, 0 mSdLazyCounter, 3211 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2912 SdHoareTripleChecker+Valid, 10547 SdHoareTripleChecker+Invalid, 3875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 620 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:05,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2912 Valid, 10547 Invalid, 3875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3211 Invalid, 0 Unknown, 620 Unchecked, 1.2s Time] [2022-01-18 01:17:05,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39678 states. [2022-01-18 01:17:06,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39678 to 18558. [2022-01-18 01:17:06,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18558 states, 18557 states have (on average 2.8762192164681792) internal successors, (53374), 18557 states have internal predecessors, (53374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:06,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18558 states to 18558 states and 53374 transitions. [2022-01-18 01:17:06,224 INFO L78 Accepts]: Start accepts. Automaton has 18558 states and 53374 transitions. Word has length 177 [2022-01-18 01:17:06,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:06,225 INFO L470 AbstractCegarLoop]: Abstraction has 18558 states and 53374 transitions. [2022-01-18 01:17:06,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 8.48936170212766) internal successors, (399), 47 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) [2022-01-18 01:17:06,225 INFO L276 IsEmpty]: Start isEmpty. Operand 18558 states and 53374 transitions. [2022-01-18 01:17:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:06,249 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:06,249 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] [2022-01-18 01:17:06,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 01:17:06,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:17:06,450 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:06,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:06,450 INFO L85 PathProgramCache]: Analyzing trace with hash 526241810, now seen corresponding path program 43 times [2022-01-18 01:17:06,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:06,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603810448] [2022-01-18 01:17:06,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:06,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:06,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:06,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:06,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603810448] [2022-01-18 01:17:06,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603810448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:06,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:06,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:17:06,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739637813] [2022-01-18 01:17:06,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:06,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:17:06,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:06,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:17:06,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:17:06,863 INFO L87 Difference]: Start difference. First operand 18558 states and 53374 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) [2022-01-18 01:17:07,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:07,565 INFO L93 Difference]: Finished difference Result 30282 states and 87158 transitions. [2022-01-18 01:17:07,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:17:07,565 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 [2022-01-18 01:17:07,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:07,621 INFO L225 Difference]: With dead ends: 30282 [2022-01-18 01:17:07,621 INFO L226 Difference]: Without dead ends: 30282 [2022-01-18 01:17:07,621 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 [2022-01-18 01:17:07,621 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 1313 mSDsluCounter, 3488 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1313 SdHoareTripleChecker+Valid, 3800 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:07,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1313 Valid, 3800 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:17:07,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30282 states. [2022-01-18 01:17:07,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30282 to 18574. [2022-01-18 01:17:07,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18574 states, 18573 states have (on average 2.8769719485274323) internal successors, (53434), 18573 states have internal predecessors, (53434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:08,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18574 states to 18574 states and 53434 transitions. [2022-01-18 01:17:08,139 INFO L78 Accepts]: Start accepts. Automaton has 18574 states and 53434 transitions. Word has length 177 [2022-01-18 01:17:08,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:08,140 INFO L470 AbstractCegarLoop]: Abstraction has 18574 states and 53434 transitions. [2022-01-18 01:17:08,140 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) [2022-01-18 01:17:08,140 INFO L276 IsEmpty]: Start isEmpty. Operand 18574 states and 53434 transitions. [2022-01-18 01:17:08,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:08,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:08,167 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] [2022-01-18 01:17:08,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-01-18 01:17:08,168 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:08,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:08,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1000671752, now seen corresponding path program 37 times [2022-01-18 01:17:08,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:08,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108654343] [2022-01-18 01:17:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:08,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:08,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:08,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108654343] [2022-01-18 01:17:08,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108654343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:08,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:08,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:17:08,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940056369] [2022-01-18 01:17:08,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:08,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:17:08,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:08,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:17:08,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:17:08,527 INFO L87 Difference]: Start difference. First operand 18574 states and 53434 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) [2022-01-18 01:17:09,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:09,145 INFO L93 Difference]: Finished difference Result 30260 states and 87110 transitions. [2022-01-18 01:17:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:17:09,145 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 [2022-01-18 01:17:09,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:09,206 INFO L225 Difference]: With dead ends: 30260 [2022-01-18 01:17:09,207 INFO L226 Difference]: Without dead ends: 30260 [2022-01-18 01:17:09,207 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 [2022-01-18 01:17:09,207 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 868 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 3114 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:09,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [868 Valid, 3114 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:17:09,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30260 states. [2022-01-18 01:17:09,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30260 to 18582. [2022-01-18 01:17:09,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18582 states, 18581 states have (on average 2.8769172810935904) internal successors, (53456), 18581 states have internal predecessors, (53456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:09,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18582 states to 18582 states and 53456 transitions. [2022-01-18 01:17:09,550 INFO L78 Accepts]: Start accepts. Automaton has 18582 states and 53456 transitions. Word has length 177 [2022-01-18 01:17:09,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:09,550 INFO L470 AbstractCegarLoop]: Abstraction has 18582 states and 53456 transitions. [2022-01-18 01:17:09,550 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) [2022-01-18 01:17:09,550 INFO L276 IsEmpty]: Start isEmpty. Operand 18582 states and 53456 transitions. [2022-01-18 01:17:09,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:09,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:09,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:09,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-01-18 01:17:09,575 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:09,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:09,575 INFO L85 PathProgramCache]: Analyzing trace with hash -799122862, now seen corresponding path program 53 times [2022-01-18 01:17:09,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:09,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187384442] [2022-01-18 01:17:09,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:09,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:09,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:09,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:09,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187384442] [2022-01-18 01:17:09,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187384442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:09,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:09,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:17:09,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95382610] [2022-01-18 01:17:09,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:09,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:17:09,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:09,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:17:09,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:17:09,908 INFO L87 Difference]: Start difference. First operand 18582 states and 53456 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) [2022-01-18 01:17:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:10,533 INFO L93 Difference]: Finished difference Result 30686 states and 88318 transitions. [2022-01-18 01:17:10,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 01:17:10,534 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 [2022-01-18 01:17:10,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:10,594 INFO L225 Difference]: With dead ends: 30686 [2022-01-18 01:17:10,594 INFO L226 Difference]: Without dead ends: 30686 [2022-01-18 01:17:10,595 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 [2022-01-18 01:17:10,595 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 813 mSDsluCounter, 3178 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 3510 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:10,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 3510 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:17:10,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30686 states. [2022-01-18 01:17:10,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30686 to 18574. [2022-01-18 01:17:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18574 states, 18573 states have (on average 2.8769719485274323) internal successors, (53434), 18573 states have internal predecessors, (53434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18574 states to 18574 states and 53434 transitions. [2022-01-18 01:17:10,955 INFO L78 Accepts]: Start accepts. Automaton has 18574 states and 53434 transitions. Word has length 177 [2022-01-18 01:17:10,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:10,955 INFO L470 AbstractCegarLoop]: Abstraction has 18574 states and 53434 transitions. [2022-01-18 01:17:10,955 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) [2022-01-18 01:17:10,955 INFO L276 IsEmpty]: Start isEmpty. Operand 18574 states and 53434 transitions. [2022-01-18 01:17:10,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:10,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:10,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:10,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-01-18 01:17:10,982 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:10,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:10,982 INFO L85 PathProgramCache]: Analyzing trace with hash -335548120, now seen corresponding path program 33 times [2022-01-18 01:17:10,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:10,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131593675] [2022-01-18 01:17:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:10,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:11,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:11,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131593675] [2022-01-18 01:17:11,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131593675] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:11,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:11,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:17:11,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563016170] [2022-01-18 01:17:11,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:11,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:17:11,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:17:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:17:11,304 INFO L87 Difference]: Start difference. First operand 18574 states and 53434 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) [2022-01-18 01:17:11,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:11,967 INFO L93 Difference]: Finished difference Result 30454 states and 87664 transitions. [2022-01-18 01:17:11,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 01:17:11,967 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 [2022-01-18 01:17:11,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:12,026 INFO L225 Difference]: With dead ends: 30454 [2022-01-18 01:17:12,026 INFO L226 Difference]: Without dead ends: 30454 [2022-01-18 01:17:12,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=307, Invalid=953, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 01:17:12,026 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 1178 mSDsluCounter, 2936 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:12,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1178 Valid, 3251 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:17:12,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30454 states. [2022-01-18 01:17:12,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30454 to 18566. [2022-01-18 01:17:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18566 states, 18565 states have (on average 2.875733907891193) internal successors, (53388), 18565 states have internal predecessors, (53388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18566 states to 18566 states and 53388 transitions. [2022-01-18 01:17:12,361 INFO L78 Accepts]: Start accepts. Automaton has 18566 states and 53388 transitions. Word has length 177 [2022-01-18 01:17:12,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:12,361 INFO L470 AbstractCegarLoop]: Abstraction has 18566 states and 53388 transitions. [2022-01-18 01:17:12,362 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) [2022-01-18 01:17:12,362 INFO L276 IsEmpty]: Start isEmpty. Operand 18566 states and 53388 transitions. [2022-01-18 01:17:12,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:12,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:12,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:12,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-01-18 01:17:12,386 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:12,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:12,387 INFO L85 PathProgramCache]: Analyzing trace with hash -827001996, now seen corresponding path program 38 times [2022-01-18 01:17:12,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:12,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713144690] [2022-01-18 01:17:12,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:12,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:12,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:12,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713144690] [2022-01-18 01:17:12,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713144690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:12,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:12,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:17:12,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368904227] [2022-01-18 01:17:12,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:12,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:17:12,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:12,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:17:12,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:17:12,711 INFO L87 Difference]: Start difference. First operand 18566 states and 53388 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) [2022-01-18 01:17:13,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:13,441 INFO L93 Difference]: Finished difference Result 30220 states and 86968 transitions. [2022-01-18 01:17:13,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:17:13,442 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 [2022-01-18 01:17:13,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:13,506 INFO L225 Difference]: With dead ends: 30220 [2022-01-18 01:17:13,506 INFO L226 Difference]: Without dead ends: 30220 [2022-01-18 01:17:13,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=436, Invalid=1286, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 01:17:13,506 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 1043 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:13,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 3177 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:17:13,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30220 states. [2022-01-18 01:17:13,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30220 to 18582. [2022-01-18 01:17:13,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18582 states, 18581 states have (on average 2.875625639093698) internal successors, (53432), 18581 states have internal predecessors, (53432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:13,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18582 states to 18582 states and 53432 transitions. [2022-01-18 01:17:13,835 INFO L78 Accepts]: Start accepts. Automaton has 18582 states and 53432 transitions. Word has length 177 [2022-01-18 01:17:13,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:13,835 INFO L470 AbstractCegarLoop]: Abstraction has 18582 states and 53432 transitions. [2022-01-18 01:17:13,835 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) [2022-01-18 01:17:13,835 INFO L276 IsEmpty]: Start isEmpty. Operand 18582 states and 53432 transitions. [2022-01-18 01:17:13,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:13,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:13,860 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] [2022-01-18 01:17:13,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-01-18 01:17:13,860 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:13,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:13,860 INFO L85 PathProgramCache]: Analyzing trace with hash 415868256, now seen corresponding path program 39 times [2022-01-18 01:17:13,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:13,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511790775] [2022-01-18 01:17:13,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:13,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:14,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:14,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511790775] [2022-01-18 01:17:14,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511790775] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:17:14,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634384294] [2022-01-18 01:17:14,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:17:14,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:17:14,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:17:14,220 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) [2022-01-18 01:17:14,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 01:17:14,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 01:17:14,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:17:14,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 62 conjunts are in the unsatisfiable core [2022-01-18 01:17:14,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:17:14,566 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 [2022-01-18 01:17:14,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2022-01-18 01:17:14,925 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:17:14,925 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 [2022-01-18 01:17:15,048 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 [2022-01-18 01:17:15,239 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 [2022-01-18 01:17:15,305 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 [2022-01-18 01:17:15,593 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 [2022-01-18 01:17:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:17:15,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:17:16,001 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:16,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634384294] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:17:16,002 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:17:16,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-01-18 01:17:16,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366653549] [2022-01-18 01:17:16,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:17:16,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 01:17:16,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:16,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 01:17:16,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2151, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 01:17:16,003 INFO L87 Difference]: Start difference. First operand 18582 states and 53432 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) [2022-01-18 01:17:20,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:20,541 INFO L93 Difference]: Finished difference Result 36120 states and 103820 transitions. [2022-01-18 01:17:20,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 01:17:20,542 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 [2022-01-18 01:17:20,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:20,610 INFO L225 Difference]: With dead ends: 36120 [2022-01-18 01:17:20,610 INFO L226 Difference]: Without dead ends: 36120 [2022-01-18 01:17:20,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1731 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1664, Invalid=7078, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 01:17:20,611 INFO L933 BasicCegarLoop]: 479 mSDtfsCounter, 3235 mSDsluCounter, 9433 mSDsCounter, 0 mSdLazyCounter, 2556 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3235 SdHoareTripleChecker+Valid, 9656 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 723 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:20,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3235 Valid, 9656 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2556 Invalid, 0 Unknown, 723 Unchecked, 1.1s Time] [2022-01-18 01:17:20,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36120 states. [2022-01-18 01:17:20,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36120 to 18596. [2022-01-18 01:17:20,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18596 states, 18595 states have (on average 2.883785963968809) internal successors, (53624), 18595 states have internal predecessors, (53624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:20,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18596 states to 18596 states and 53624 transitions. [2022-01-18 01:17:20,991 INFO L78 Accepts]: Start accepts. Automaton has 18596 states and 53624 transitions. Word has length 177 [2022-01-18 01:17:20,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:20,991 INFO L470 AbstractCegarLoop]: Abstraction has 18596 states and 53624 transitions. [2022-01-18 01:17:20,991 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) [2022-01-18 01:17:20,991 INFO L276 IsEmpty]: Start isEmpty. Operand 18596 states and 53624 transitions. [2022-01-18 01:17:21,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:21,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:21,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:21,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 01:17:21,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2022-01-18 01:17:21,217 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:21,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:21,218 INFO L85 PathProgramCache]: Analyzing trace with hash 462627316, now seen corresponding path program 44 times [2022-01-18 01:17:21,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:21,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662556308] [2022-01-18 01:17:21,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:21,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:21,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:21,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:21,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662556308] [2022-01-18 01:17:21,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662556308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:21,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:21,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:17:21,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491612064] [2022-01-18 01:17:21,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:21,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:17:21,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:21,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:17:21,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:17:21,545 INFO L87 Difference]: Start difference. First operand 18596 states and 53624 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) [2022-01-18 01:17:22,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:22,285 INFO L93 Difference]: Finished difference Result 30734 states and 88680 transitions. [2022-01-18 01:17:22,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:17:22,285 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 [2022-01-18 01:17:22,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:22,343 INFO L225 Difference]: With dead ends: 30734 [2022-01-18 01:17:22,343 INFO L226 Difference]: Without dead ends: 30734 [2022-01-18 01:17:22,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=398, Invalid=1242, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 01:17:22,344 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 1028 mSDsluCounter, 3384 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 3686 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:22,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 3686 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:17:22,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30734 states. [2022-01-18 01:17:22,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30734 to 18572. [2022-01-18 01:17:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18572 states, 18571 states have (on average 2.8839588605890905) internal successors, (53558), 18571 states have internal predecessors, (53558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18572 states to 18572 states and 53558 transitions. [2022-01-18 01:17:22,678 INFO L78 Accepts]: Start accepts. Automaton has 18572 states and 53558 transitions. Word has length 177 [2022-01-18 01:17:22,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:22,678 INFO L470 AbstractCegarLoop]: Abstraction has 18572 states and 53558 transitions. [2022-01-18 01:17:22,679 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) [2022-01-18 01:17:22,679 INFO L276 IsEmpty]: Start isEmpty. Operand 18572 states and 53558 transitions. [2022-01-18 01:17:22,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:22,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:22,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:22,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-01-18 01:17:22,703 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:22,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:22,704 INFO L85 PathProgramCache]: Analyzing trace with hash -2110797828, now seen corresponding path program 40 times [2022-01-18 01:17:22,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:22,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638450599] [2022-01-18 01:17:22,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:22,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:23,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:23,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638450599] [2022-01-18 01:17:23,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638450599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:23,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:23,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:17:23,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19125882] [2022-01-18 01:17:23,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:23,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:17:23,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:23,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:17:23,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:17:23,024 INFO L87 Difference]: Start difference. First operand 18572 states and 53558 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) [2022-01-18 01:17:23,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:23,685 INFO L93 Difference]: Finished difference Result 30446 states and 87796 transitions. [2022-01-18 01:17:23,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:17:23,686 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 [2022-01-18 01:17:23,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:23,741 INFO L225 Difference]: With dead ends: 30446 [2022-01-18 01:17:23,742 INFO L226 Difference]: Without dead ends: 30446 [2022-01-18 01:17:23,742 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 [2022-01-18 01:17:23,742 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1198 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:23,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1198 Valid, 2686 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:17:23,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30446 states. [2022-01-18 01:17:24,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30446 to 18604. [2022-01-18 01:17:24,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18604 states, 18603 states have (on average 2.883728430898242) internal successors, (53646), 18603 states have internal predecessors, (53646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:24,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18604 states to 18604 states and 53646 transitions. [2022-01-18 01:17:24,192 INFO L78 Accepts]: Start accepts. Automaton has 18604 states and 53646 transitions. Word has length 177 [2022-01-18 01:17:24,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:24,192 INFO L470 AbstractCegarLoop]: Abstraction has 18604 states and 53646 transitions. [2022-01-18 01:17:24,192 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) [2022-01-18 01:17:24,193 INFO L276 IsEmpty]: Start isEmpty. Operand 18604 states and 53646 transitions. [2022-01-18 01:17:24,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:24,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:24,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:24,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-01-18 01:17:24,216 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:24,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:24,218 INFO L85 PathProgramCache]: Analyzing trace with hash -867927576, now seen corresponding path program 41 times [2022-01-18 01:17:24,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:24,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650929581] [2022-01-18 01:17:24,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:24,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:24,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:24,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:24,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650929581] [2022-01-18 01:17:24,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650929581] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:17:24,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210630212] [2022-01-18 01:17:24,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:17:24,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:17:24,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:17:24,522 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) [2022-01-18 01:17:24,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 01:17:24,720 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:17:24,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:17:24,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 76 conjunts are in the unsatisfiable core [2022-01-18 01:17:24,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:17:24,747 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 [2022-01-18 01:17:24,767 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 01:17:24,768 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 [2022-01-18 01:17:24,944 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-01-18 01:17:24,944 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 [2022-01-18 01:17:25,083 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 [2022-01-18 01:17:25,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:17:25,521 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-01-18 01:17:25,521 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 21 [2022-01-18 01:17:25,675 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 [2022-01-18 01:17:25,911 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 [2022-01-18 01:17:26,003 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 [2022-01-18 01:17:26,359 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 [2022-01-18 01:17:26,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:17:26,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:17:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:26,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210630212] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:17:26,765 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:17:26,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-01-18 01:17:26,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967092845] [2022-01-18 01:17:26,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:17:26,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 01:17:26,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:26,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 01:17:26,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2102, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 01:17:26,766 INFO L87 Difference]: Start difference. First operand 18604 states and 53646 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) [2022-01-18 01:17:31,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:31,346 INFO L93 Difference]: Finished difference Result 32907 states and 94971 transitions. [2022-01-18 01:17:31,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 01:17:31,346 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 [2022-01-18 01:17:31,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:31,408 INFO L225 Difference]: With dead ends: 32907 [2022-01-18 01:17:31,408 INFO L226 Difference]: Without dead ends: 32907 [2022-01-18 01:17:31,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 2000 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1767, Invalid=7163, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 01:17:31,410 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 2389 mSDsluCounter, 7624 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 7912 SdHoareTripleChecker+Invalid, 3083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 668 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:31,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2389 Valid, 7912 Invalid, 3083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2367 Invalid, 0 Unknown, 668 Unchecked, 1.0s Time] [2022-01-18 01:17:31,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32907 states. [2022-01-18 01:17:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32907 to 18572. [2022-01-18 01:17:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18572 states, 18571 states have (on average 2.8839588605890905) internal successors, (53558), 18571 states have internal predecessors, (53558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18572 states to 18572 states and 53558 transitions. [2022-01-18 01:17:31,752 INFO L78 Accepts]: Start accepts. Automaton has 18572 states and 53558 transitions. Word has length 177 [2022-01-18 01:17:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:31,752 INFO L470 AbstractCegarLoop]: Abstraction has 18572 states and 53558 transitions. [2022-01-18 01:17:31,752 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) [2022-01-18 01:17:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 18572 states and 53558 transitions. [2022-01-18 01:17:31,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:31,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:31,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:31,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 01:17:31,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2022-01-18 01:17:31,976 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:31,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:31,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1993797414, now seen corresponding path program 45 times [2022-01-18 01:17:31,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:31,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467142918] [2022-01-18 01:17:31,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:31,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:32,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:32,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:32,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467142918] [2022-01-18 01:17:32,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467142918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:32,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:32,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:17:32,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584787153] [2022-01-18 01:17:32,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:32,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:17:32,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:32,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:17:32,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:17:32,308 INFO L87 Difference]: Start difference. First operand 18572 states and 53558 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) [2022-01-18 01:17:33,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:33,040 INFO L93 Difference]: Finished difference Result 30436 states and 87756 transitions. [2022-01-18 01:17:33,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:17:33,040 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 [2022-01-18 01:17:33,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:33,096 INFO L225 Difference]: With dead ends: 30436 [2022-01-18 01:17:33,096 INFO L226 Difference]: Without dead ends: 30436 [2022-01-18 01:17:33,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 01:17:33,097 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 1082 mSDsluCounter, 3238 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:33,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 3538 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:17:33,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30436 states. [2022-01-18 01:17:33,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30436 to 18588. [2022-01-18 01:17:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18588 states, 18587 states have (on average 2.8847043632646474) internal successors, (53618), 18587 states have internal predecessors, (53618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:33,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18588 states to 18588 states and 53618 transitions. [2022-01-18 01:17:33,423 INFO L78 Accepts]: Start accepts. Automaton has 18588 states and 53618 transitions. Word has length 177 [2022-01-18 01:17:33,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:33,424 INFO L470 AbstractCegarLoop]: Abstraction has 18588 states and 53618 transitions. [2022-01-18 01:17:33,424 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) [2022-01-18 01:17:33,424 INFO L276 IsEmpty]: Start isEmpty. Operand 18588 states and 53618 transitions. [2022-01-18 01:17:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:33,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:33,448 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, 1, 1, 1, 1] [2022-01-18 01:17:33,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-01-18 01:17:33,448 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:33,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:33,448 INFO L85 PathProgramCache]: Analyzing trace with hash 774256320, now seen corresponding path program 42 times [2022-01-18 01:17:33,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:33,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322235900] [2022-01-18 01:17:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:33,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:33,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:33,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322235900] [2022-01-18 01:17:33,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322235900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:33,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:33,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:17:33,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80400663] [2022-01-18 01:17:33,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:33,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:17:33,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:33,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:17:33,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:17:33,773 INFO L87 Difference]: Start difference. First operand 18588 states and 53618 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) [2022-01-18 01:17:34,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:34,465 INFO L93 Difference]: Finished difference Result 30398 states and 87656 transitions. [2022-01-18 01:17:34,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:17:34,465 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 [2022-01-18 01:17:34,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:34,517 INFO L225 Difference]: With dead ends: 30398 [2022-01-18 01:17:34,517 INFO L226 Difference]: Without dead ends: 30398 [2022-01-18 01:17:34,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:17:34,518 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 1121 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:34,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 2778 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:17:34,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30398 states. [2022-01-18 01:17:34,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30398 to 18596. [2022-01-18 01:17:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18596 states, 18595 states have (on average 2.8846464103253564) internal successors, (53640), 18595 states have internal predecessors, (53640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18596 states to 18596 states and 53640 transitions. [2022-01-18 01:17:34,830 INFO L78 Accepts]: Start accepts. Automaton has 18596 states and 53640 transitions. Word has length 177 [2022-01-18 01:17:34,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:34,830 INFO L470 AbstractCegarLoop]: Abstraction has 18596 states and 53640 transitions. [2022-01-18 01:17:34,830 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) [2022-01-18 01:17:34,830 INFO L276 IsEmpty]: Start isEmpty. Operand 18596 states and 53640 transitions. [2022-01-18 01:17:34,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:34,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:34,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:34,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-01-18 01:17:34,857 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:34,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:34,857 INFO L85 PathProgramCache]: Analyzing trace with hash 975805210, now seen corresponding path program 54 times [2022-01-18 01:17:34,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:34,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697092688] [2022-01-18 01:17:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:34,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:35,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:35,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:35,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697092688] [2022-01-18 01:17:35,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697092688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:35,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:35,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:17:35,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331950693] [2022-01-18 01:17:35,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:35,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:17:35,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:35,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:17:35,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:17:35,200 INFO L87 Difference]: Start difference. First operand 18596 states and 53640 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) [2022-01-18 01:17:35,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:35,789 INFO L93 Difference]: Finished difference Result 30704 states and 88534 transitions. [2022-01-18 01:17:35,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:17:35,790 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 [2022-01-18 01:17:35,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:35,846 INFO L225 Difference]: With dead ends: 30704 [2022-01-18 01:17:35,846 INFO L226 Difference]: Without dead ends: 30704 [2022-01-18 01:17:35,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=336, Invalid=1070, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:17:35,846 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 940 mSDsluCounter, 2523 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 2850 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:35,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [940 Valid, 2850 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:17:35,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30704 states. [2022-01-18 01:17:36,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30704 to 18588. [2022-01-18 01:17:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18588 states, 18587 states have (on average 2.8847043632646474) internal successors, (53618), 18587 states have internal predecessors, (53618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18588 states to 18588 states and 53618 transitions. [2022-01-18 01:17:36,174 INFO L78 Accepts]: Start accepts. Automaton has 18588 states and 53618 transitions. Word has length 177 [2022-01-18 01:17:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:36,174 INFO L470 AbstractCegarLoop]: Abstraction has 18588 states and 53618 transitions. [2022-01-18 01:17:36,175 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) [2022-01-18 01:17:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 18588 states and 53618 transitions. [2022-01-18 01:17:36,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:36,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:36,205 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] [2022-01-18 01:17:36,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-01-18 01:17:36,206 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:36,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1439379952, now seen corresponding path program 34 times [2022-01-18 01:17:36,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:36,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318300515] [2022-01-18 01:17:36,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:36,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:36,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:36,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:36,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318300515] [2022-01-18 01:17:36,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318300515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:36,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:36,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:17:36,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940216248] [2022-01-18 01:17:36,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:36,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:17:36,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:36,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:17:36,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:17:36,518 INFO L87 Difference]: Start difference. First operand 18588 states and 53618 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) [2022-01-18 01:17:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:37,103 INFO L93 Difference]: Finished difference Result 30600 states and 88240 transitions. [2022-01-18 01:17:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:17:37,103 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 [2022-01-18 01:17:37,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:37,158 INFO L225 Difference]: With dead ends: 30600 [2022-01-18 01:17:37,159 INFO L226 Difference]: Without dead ends: 30600 [2022-01-18 01:17:37,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:17:37,159 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 932 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:37,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 2789 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:17:37,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30600 states. [2022-01-18 01:17:37,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30600 to 18564. [2022-01-18 01:17:37,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18564 states, 18563 states have (on average 2.88358562732317) internal successors, (53528), 18563 states have internal predecessors, (53528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18564 states to 18564 states and 53528 transitions. [2022-01-18 01:17:37,478 INFO L78 Accepts]: Start accepts. Automaton has 18564 states and 53528 transitions. Word has length 177 [2022-01-18 01:17:37,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:37,479 INFO L470 AbstractCegarLoop]: Abstraction has 18564 states and 53528 transitions. [2022-01-18 01:17:37,479 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) [2022-01-18 01:17:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 18564 states and 53528 transitions. [2022-01-18 01:17:37,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:37,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:37,503 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:37,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-01-18 01:17:37,503 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:37,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:37,503 INFO L85 PathProgramCache]: Analyzing trace with hash 625248650, now seen corresponding path program 46 times [2022-01-18 01:17:37,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:37,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189743367] [2022-01-18 01:17:37,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:37,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:37,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:37,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189743367] [2022-01-18 01:17:37,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189743367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:37,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:37,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:17:37,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929049792] [2022-01-18 01:17:37,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:37,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:17:37,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:17:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:17:37,835 INFO L87 Difference]: Start difference. First operand 18564 states and 53528 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) [2022-01-18 01:17:38,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:38,467 INFO L93 Difference]: Finished difference Result 30276 states and 87244 transitions. [2022-01-18 01:17:38,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:17:38,468 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 [2022-01-18 01:17:38,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:38,524 INFO L225 Difference]: With dead ends: 30276 [2022-01-18 01:17:38,525 INFO L226 Difference]: Without dead ends: 30276 [2022-01-18 01:17:38,525 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 [2022-01-18 01:17:38,525 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 990 mSDsluCounter, 2478 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:38,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 2785 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:17:38,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30276 states. [2022-01-18 01:17:38,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30276 to 18556. [2022-01-18 01:17:38,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18556 states, 18555 states have (on average 2.882349770951226) internal successors, (53482), 18555 states have internal predecessors, (53482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:38,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18556 states to 18556 states and 53482 transitions. [2022-01-18 01:17:38,854 INFO L78 Accepts]: Start accepts. Automaton has 18556 states and 53482 transitions. Word has length 177 [2022-01-18 01:17:38,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:38,854 INFO L470 AbstractCegarLoop]: Abstraction has 18556 states and 53482 transitions. [2022-01-18 01:17:38,855 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) [2022-01-18 01:17:38,855 INFO L276 IsEmpty]: Start isEmpty. Operand 18556 states and 53482 transitions. [2022-01-18 01:17:38,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:38,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:38,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:38,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-01-18 01:17:38,879 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:38,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:38,880 INFO L85 PathProgramCache]: Analyzing trace with hash -901664912, now seen corresponding path program 43 times [2022-01-18 01:17:38,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:38,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082056833] [2022-01-18 01:17:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:38,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:39,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:39,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082056833] [2022-01-18 01:17:39,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082056833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:39,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:39,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:17:39,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935138945] [2022-01-18 01:17:39,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:39,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:17:39,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:17:39,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:17:39,203 INFO L87 Difference]: Start difference. First operand 18556 states and 53482 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) [2022-01-18 01:17:39,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:39,803 INFO L93 Difference]: Finished difference Result 30246 states and 87166 transitions. [2022-01-18 01:17:39,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:17:39,803 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 [2022-01-18 01:17:39,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:39,860 INFO L225 Difference]: With dead ends: 30246 [2022-01-18 01:17:39,860 INFO L226 Difference]: Without dead ends: 30246 [2022-01-18 01:17:39,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:17:39,861 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 851 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:39,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 2667 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:17:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30246 states. [2022-01-18 01:17:40,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30246 to 18572. [2022-01-18 01:17:40,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18572 states, 18571 states have (on average 2.8822357439017825) internal successors, (53526), 18571 states have internal predecessors, (53526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:40,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18572 states to 18572 states and 53526 transitions. [2022-01-18 01:17:40,253 INFO L78 Accepts]: Start accepts. Automaton has 18572 states and 53526 transitions. Word has length 177 [2022-01-18 01:17:40,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:40,253 INFO L470 AbstractCegarLoop]: Abstraction has 18572 states and 53526 transitions. [2022-01-18 01:17:40,253 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) [2022-01-18 01:17:40,254 INFO L276 IsEmpty]: Start isEmpty. Operand 18572 states and 53526 transitions. [2022-01-18 01:17:40,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:40,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:40,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:40,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-01-18 01:17:40,278 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:40,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash -700116022, now seen corresponding path program 55 times [2022-01-18 01:17:40,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:40,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111415365] [2022-01-18 01:17:40,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:40,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:40,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:40,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111415365] [2022-01-18 01:17:40,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111415365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:40,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:40,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:17:40,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000993678] [2022-01-18 01:17:40,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:40,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:17:40,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:40,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:17:40,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:17:40,603 INFO L87 Difference]: Start difference. First operand 18572 states and 53526 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) [2022-01-18 01:17:41,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:41,265 INFO L93 Difference]: Finished difference Result 30568 states and 88088 transitions. [2022-01-18 01:17:41,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:17:41,265 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 [2022-01-18 01:17:41,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:41,320 INFO L225 Difference]: With dead ends: 30568 [2022-01-18 01:17:41,320 INFO L226 Difference]: Without dead ends: 30568 [2022-01-18 01:17:41,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=335, Invalid=1071, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:17:41,321 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 939 mSDsluCounter, 3102 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:41,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 3418 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:17:41,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30568 states. [2022-01-18 01:17:41,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30568 to 18572. [2022-01-18 01:17:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18572 states, 18571 states have (on average 2.8822357439017825) internal successors, (53526), 18571 states have internal predecessors, (53526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18572 states to 18572 states and 53526 transitions. [2022-01-18 01:17:41,641 INFO L78 Accepts]: Start accepts. Automaton has 18572 states and 53526 transitions. Word has length 177 [2022-01-18 01:17:41,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:41,641 INFO L470 AbstractCegarLoop]: Abstraction has 18572 states and 53526 transitions. [2022-01-18 01:17:41,641 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) [2022-01-18 01:17:41,641 INFO L276 IsEmpty]: Start isEmpty. Operand 18572 states and 53526 transitions. [2022-01-18 01:17:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:41,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:41,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:41,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-01-18 01:17:41,665 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:41,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:41,665 INFO L85 PathProgramCache]: Analyzing trace with hash -236541280, now seen corresponding path program 35 times [2022-01-18 01:17:41,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:41,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587654090] [2022-01-18 01:17:41,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:41,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:41,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:41,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587654090] [2022-01-18 01:17:41,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587654090] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:41,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:41,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:17:41,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876371616] [2022-01-18 01:17:41,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:41,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:17:41,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:41,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:17:41,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:17:41,979 INFO L87 Difference]: Start difference. First operand 18572 states and 53526 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) [2022-01-18 01:17:42,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:42,568 INFO L93 Difference]: Finished difference Result 30472 states and 87816 transitions. [2022-01-18 01:17:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:17:42,568 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 [2022-01-18 01:17:42,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:42,623 INFO L225 Difference]: With dead ends: 30472 [2022-01-18 01:17:42,623 INFO L226 Difference]: Without dead ends: 30472 [2022-01-18 01:17:42,623 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 [2022-01-18 01:17:42,623 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 1116 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:42,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1116 Valid, 2644 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:17:42,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30472 states. [2022-01-18 01:17:42,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30472 to 18564. [2022-01-18 01:17:42,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18564 states, 18563 states have (on average 2.881430803210688) internal successors, (53488), 18563 states have internal predecessors, (53488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18564 states to 18564 states and 53488 transitions. [2022-01-18 01:17:42,943 INFO L78 Accepts]: Start accepts. Automaton has 18564 states and 53488 transitions. Word has length 177 [2022-01-18 01:17:42,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:42,943 INFO L470 AbstractCegarLoop]: Abstraction has 18564 states and 53488 transitions. [2022-01-18 01:17:42,943 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) [2022-01-18 01:17:42,943 INFO L276 IsEmpty]: Start isEmpty. Operand 18564 states and 53488 transitions. [2022-01-18 01:17:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:42,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:42,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:42,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-01-18 01:17:42,967 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:42,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:42,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1960172420, now seen corresponding path program 56 times [2022-01-18 01:17:42,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:42,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217686989] [2022-01-18 01:17:42,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:42,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:43,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:43,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:43,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217686989] [2022-01-18 01:17:43,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217686989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:43,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:43,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:17:43,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038553856] [2022-01-18 01:17:43,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:43,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:17:43,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:17:43,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:17:43,294 INFO L87 Difference]: Start difference. First operand 18564 states and 53488 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) [2022-01-18 01:17:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:43,980 INFO L93 Difference]: Finished difference Result 30904 states and 89020 transitions. [2022-01-18 01:17:43,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:17:43,980 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 [2022-01-18 01:17:43,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:44,035 INFO L225 Difference]: With dead ends: 30904 [2022-01-18 01:17:44,036 INFO L226 Difference]: Without dead ends: 30904 [2022-01-18 01:17:44,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=1182, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 01:17:44,036 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 833 mSDsluCounter, 3127 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 3458 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:44,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 3458 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:17:44,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30904 states. [2022-01-18 01:17:44,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30904 to 18548. [2022-01-18 01:17:44,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18548 states, 18547 states have (on average 2.881544185043403) internal successors, (53444), 18547 states have internal predecessors, (53444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:44,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18548 states to 18548 states and 53444 transitions. [2022-01-18 01:17:44,374 INFO L78 Accepts]: Start accepts. Automaton has 18548 states and 53444 transitions. Word has length 177 [2022-01-18 01:17:44,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:44,374 INFO L470 AbstractCegarLoop]: Abstraction has 18548 states and 53444 transitions. [2022-01-18 01:17:44,374 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) [2022-01-18 01:17:44,374 INFO L276 IsEmpty]: Start isEmpty. Operand 18548 states and 53444 transitions. [2022-01-18 01:17:44,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:44,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:44,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:44,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-01-18 01:17:44,398 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:44,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:44,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2039912484, now seen corresponding path program 36 times [2022-01-18 01:17:44,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:44,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017361379] [2022-01-18 01:17:44,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:44,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:44,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:44,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:44,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017361379] [2022-01-18 01:17:44,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017361379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:44,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:44,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:17:44,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246095090] [2022-01-18 01:17:44,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:44,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:17:44,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:44,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:17:44,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:17:44,720 INFO L87 Difference]: Start difference. First operand 18548 states and 53444 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) [2022-01-18 01:17:45,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:45,386 INFO L93 Difference]: Finished difference Result 30312 states and 87336 transitions. [2022-01-18 01:17:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:17:45,387 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 [2022-01-18 01:17:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:45,442 INFO L225 Difference]: With dead ends: 30312 [2022-01-18 01:17:45,442 INFO L226 Difference]: Without dead ends: 30312 [2022-01-18 01:17:45,442 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 [2022-01-18 01:17:45,442 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 777 mSDsluCounter, 2855 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:45,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 3177 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:17:45,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30312 states. [2022-01-18 01:17:45,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30312 to 18564. [2022-01-18 01:17:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18564 states, 18563 states have (on average 2.881430803210688) internal successors, (53488), 18563 states have internal predecessors, (53488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:45,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18564 states to 18564 states and 53488 transitions. [2022-01-18 01:17:45,879 INFO L78 Accepts]: Start accepts. Automaton has 18564 states and 53488 transitions. Word has length 177 [2022-01-18 01:17:45,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:45,879 INFO L470 AbstractCegarLoop]: Abstraction has 18564 states and 53488 transitions. [2022-01-18 01:17:45,879 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) [2022-01-18 01:17:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 18564 states and 53488 transitions. [2022-01-18 01:17:45,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:45,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:45,903 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] [2022-01-18 01:17:45,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-01-18 01:17:45,903 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:45,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:45,904 INFO L85 PathProgramCache]: Analyzing trace with hash 160691390, now seen corresponding path program 37 times [2022-01-18 01:17:45,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:45,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115194475] [2022-01-18 01:17:45,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:45,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:46,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:46,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115194475] [2022-01-18 01:17:46,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115194475] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:46,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:46,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:17:46,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803208169] [2022-01-18 01:17:46,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:46,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:17:46,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:46,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:17:46,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:17:46,219 INFO L87 Difference]: Start difference. First operand 18564 states and 53488 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) [2022-01-18 01:17:46,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:46,937 INFO L93 Difference]: Finished difference Result 29664 states and 85266 transitions. [2022-01-18 01:17:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 01:17:46,937 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 [2022-01-18 01:17:46,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:46,994 INFO L225 Difference]: With dead ends: 29664 [2022-01-18 01:17:46,994 INFO L226 Difference]: Without dead ends: 29664 [2022-01-18 01:17:46,994 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 [2022-01-18 01:17:46,994 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 1336 mSDsluCounter, 3072 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 3407 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:46,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1336 Valid, 3407 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:17:47,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29664 states. [2022-01-18 01:17:47,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29664 to 16992. [2022-01-18 01:17:47,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16992 states, 16991 states have (on average 2.871049379083044) internal successors, (48782), 16991 states have internal predecessors, (48782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:47,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16992 states to 16992 states and 48782 transitions. [2022-01-18 01:17:47,301 INFO L78 Accepts]: Start accepts. Automaton has 16992 states and 48782 transitions. Word has length 177 [2022-01-18 01:17:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:47,301 INFO L470 AbstractCegarLoop]: Abstraction has 16992 states and 48782 transitions. [2022-01-18 01:17:47,301 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) [2022-01-18 01:17:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 16992 states and 48782 transitions. [2022-01-18 01:17:47,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:47,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:47,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:47,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-01-18 01:17:47,322 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:47,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:47,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1920541636, now seen corresponding path program 44 times [2022-01-18 01:17:47,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:47,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641307454] [2022-01-18 01:17:47,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:47,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:47,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:47,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641307454] [2022-01-18 01:17:47,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641307454] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:17:47,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247312834] [2022-01-18 01:17:47,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:17:47,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:17:47,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:17:47,680 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) [2022-01-18 01:17:47,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 01:17:47,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:17:47,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:17:47,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 46 conjunts are in the unsatisfiable core [2022-01-18 01:17:47,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:17:48,205 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 11 treesize of output 7 [2022-01-18 01:17:48,297 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 [2022-01-18 01:17:48,324 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 [2022-01-18 01:17:48,506 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-01-18 01:17:48,506 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 [2022-01-18 01:17:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:17:48,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:17:48,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:48,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247312834] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:17:48,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:17:48,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 9] total 42 [2022-01-18 01:17:48,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254214449] [2022-01-18 01:17:48,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:17:48,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 01:17:48,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 01:17:48,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1538, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 01:17:48,879 INFO L87 Difference]: Start difference. First operand 16992 states and 48782 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) [2022-01-18 01:17:51,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:51,154 INFO L93 Difference]: Finished difference Result 33990 states and 97366 transitions. [2022-01-18 01:17:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 01:17:51,154 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 [2022-01-18 01:17:51,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:51,219 INFO L225 Difference]: With dead ends: 33990 [2022-01-18 01:17:51,220 INFO L226 Difference]: Without dead ends: 33990 [2022-01-18 01:17:51,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1165 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1228, Invalid=4778, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 01:17:51,221 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 1982 mSDsluCounter, 8685 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 8943 SdHoareTripleChecker+Invalid, 2953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 324 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:51,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 8943 Invalid, 2953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2595 Invalid, 0 Unknown, 324 Unchecked, 0.9s Time] [2022-01-18 01:17:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33990 states. [2022-01-18 01:17:51,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33990 to 16386. [2022-01-18 01:17:51,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16386 states, 16385 states have (on average 2.8622520598108028) internal successors, (46898), 16385 states have internal predecessors, (46898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16386 states to 16386 states and 46898 transitions. [2022-01-18 01:17:51,560 INFO L78 Accepts]: Start accepts. Automaton has 16386 states and 46898 transitions. Word has length 177 [2022-01-18 01:17:51,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:51,560 INFO L470 AbstractCegarLoop]: Abstraction has 16386 states and 46898 transitions. [2022-01-18 01:17:51,560 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) [2022-01-18 01:17:51,560 INFO L276 IsEmpty]: Start isEmpty. Operand 16386 states and 46898 transitions. [2022-01-18 01:17:51,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:51,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:51,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:17:51,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-01-18 01:17:51,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:17:51,781 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:51,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:51,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1092416362, now seen corresponding path program 57 times [2022-01-18 01:17:51,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:51,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14198971] [2022-01-18 01:17:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:51,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:52,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:52,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:52,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14198971] [2022-01-18 01:17:52,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14198971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:17:52,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:17:52,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:17:52,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682670167] [2022-01-18 01:17:52,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:17:52,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:17:52,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:52,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:17:52,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:17:52,061 INFO L87 Difference]: Start difference. First operand 16386 states and 46898 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) [2022-01-18 01:17:52,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:17:52,806 INFO L93 Difference]: Finished difference Result 27210 states and 78340 transitions. [2022-01-18 01:17:52,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:17:52,806 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 [2022-01-18 01:17:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:17:52,856 INFO L225 Difference]: With dead ends: 27210 [2022-01-18 01:17:52,856 INFO L226 Difference]: Without dead ends: 27210 [2022-01-18 01:17:52,857 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 [2022-01-18 01:17:52,857 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 1172 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:17:52,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1172 Valid, 3611 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:17:52,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27210 states. [2022-01-18 01:17:53,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27210 to 16402. [2022-01-18 01:17:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16402 states, 16401 states have (on average 2.863118102554722) internal successors, (46958), 16401 states have internal predecessors, (46958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:17:53,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16402 states to 16402 states and 46958 transitions. [2022-01-18 01:17:53,144 INFO L78 Accepts]: Start accepts. Automaton has 16402 states and 46958 transitions. Word has length 177 [2022-01-18 01:17:53,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:17:53,144 INFO L470 AbstractCegarLoop]: Abstraction has 16402 states and 46958 transitions. [2022-01-18 01:17:53,144 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) [2022-01-18 01:17:53,144 INFO L276 IsEmpty]: Start isEmpty. Operand 16402 states and 46958 transitions. [2022-01-18 01:17:53,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:17:53,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:17:53,166 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] [2022-01-18 01:17:53,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-01-18 01:17:53,166 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:17:53,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:17:53,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2001586854, now seen corresponding path program 47 times [2022-01-18 01:17:53,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:17:53,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712613928] [2022-01-18 01:17:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:17:53,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:17:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:17:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:53,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:17:53,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712613928] [2022-01-18 01:17:53,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712613928] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:17:53,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62241691] [2022-01-18 01:17:53,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:17:53,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:17:53,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:17:53,471 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) [2022-01-18 01:17:53,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 01:17:53,686 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:17:53,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:17:53,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 77 conjunts are in the unsatisfiable core [2022-01-18 01:17:53,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:17:53,717 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 [2022-01-18 01:17:53,746 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 01:17:53,746 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 [2022-01-18 01:17:54,003 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-01-18 01:17:54,004 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 [2022-01-18 01:17:54,168 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2022-01-18 01:17:54,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:17:54,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:17:54,728 INFO L353 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-01-18 01:17:54,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 17 [2022-01-18 01:17:54,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2022-01-18 01:17:55,125 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 [2022-01-18 01:17:55,216 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2022-01-18 01:17:55,604 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 [2022-01-18 01:17:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:17:55,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:17:56,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:17:56,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62241691] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:17:56,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:17:56,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-01-18 01:17:56,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110695364] [2022-01-18 01:17:56,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:17:56,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 01:17:56,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:17:56,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 01:17:56,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2119, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 01:17:56,007 INFO L87 Difference]: Start difference. First operand 16402 states and 46958 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) [2022-01-18 01:18:02,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:02,559 INFO L93 Difference]: Finished difference Result 42311 states and 122270 transitions. [2022-01-18 01:18:02,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 01:18:02,560 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 [2022-01-18 01:18:02,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:02,639 INFO L225 Difference]: With dead ends: 42311 [2022-01-18 01:18:02,639 INFO L226 Difference]: Without dead ends: 42311 [2022-01-18 01:18:02,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 333 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2780 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2303, Invalid=9039, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 01:18:02,641 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 3072 mSDsluCounter, 6912 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3072 SdHoareTripleChecker+Valid, 7202 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:02,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3072 Valid, 7202 Invalid, 2313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2110 Invalid, 0 Unknown, 151 Unchecked, 1.0s Time] [2022-01-18 01:18:02,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42311 states. [2022-01-18 01:18:03,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42311 to 16402. [2022-01-18 01:18:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16402 states, 16401 states have (on average 2.863118102554722) internal successors, (46958), 16401 states have internal predecessors, (46958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:03,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16402 states to 16402 states and 46958 transitions. [2022-01-18 01:18:03,049 INFO L78 Accepts]: Start accepts. Automaton has 16402 states and 46958 transitions. Word has length 177 [2022-01-18 01:18:03,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:03,049 INFO L470 AbstractCegarLoop]: Abstraction has 16402 states and 46958 transitions. [2022-01-18 01:18:03,049 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) [2022-01-18 01:18:03,049 INFO L276 IsEmpty]: Start isEmpty. Operand 16402 states and 46958 transitions. [2022-01-18 01:18:03,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:03,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:03,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:03,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 01:18:03,270 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,SelfDestructingSolverStorable216 [2022-01-18 01:18:03,270 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:03,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:03,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1688917108, now seen corresponding path program 48 times [2022-01-18 01:18:03,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:03,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652920591] [2022-01-18 01:18:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:03,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:03,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:03,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652920591] [2022-01-18 01:18:03,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652920591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:03,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:03,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:18:03,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012783786] [2022-01-18 01:18:03,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:03,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:18:03,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:03,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:18:03,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:18:03,609 INFO L87 Difference]: Start difference. First operand 16402 states and 46958 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) [2022-01-18 01:18:04,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:04,256 INFO L93 Difference]: Finished difference Result 23525 states and 67839 transitions. [2022-01-18 01:18:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:18:04,257 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 [2022-01-18 01:18:04,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:04,297 INFO L225 Difference]: With dead ends: 23525 [2022-01-18 01:18:04,297 INFO L226 Difference]: Without dead ends: 23525 [2022-01-18 01:18:04,297 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 [2022-01-18 01:18:04,298 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1219 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:04,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 3048 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23525 states. [2022-01-18 01:18:04,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23525 to 16434. [2022-01-18 01:18:04,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16434 states, 16433 states have (on average 2.864358303413862) internal successors, (47070), 16433 states have internal predecessors, (47070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16434 states to 16434 states and 47070 transitions. [2022-01-18 01:18:04,559 INFO L78 Accepts]: Start accepts. Automaton has 16434 states and 47070 transitions. Word has length 177 [2022-01-18 01:18:04,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:04,559 INFO L470 AbstractCegarLoop]: Abstraction has 16434 states and 47070 transitions. [2022-01-18 01:18:04,559 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) [2022-01-18 01:18:04,559 INFO L276 IsEmpty]: Start isEmpty. Operand 16434 states and 47070 transitions. [2022-01-18 01:18:04,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:04,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:04,580 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] [2022-01-18 01:18:04,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-01-18 01:18:04,580 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:04,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:04,581 INFO L85 PathProgramCache]: Analyzing trace with hash 162003546, now seen corresponding path program 45 times [2022-01-18 01:18:04,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:04,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044706220] [2022-01-18 01:18:04,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:04,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:04,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:04,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044706220] [2022-01-18 01:18:04,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044706220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:04,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:04,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:04,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699499748] [2022-01-18 01:18:04,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:04,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:04,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:04,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:04,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:04,941 INFO L87 Difference]: Start difference. First operand 16434 states and 47070 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) [2022-01-18 01:18:05,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:05,680 INFO L93 Difference]: Finished difference Result 23621 states and 68103 transitions. [2022-01-18 01:18:05,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:18:05,681 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 [2022-01-18 01:18:05,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:05,717 INFO L225 Difference]: With dead ends: 23621 [2022-01-18 01:18:05,717 INFO L226 Difference]: Without dead ends: 23621 [2022-01-18 01:18:05,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:18:05,718 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1175 mSDsluCounter, 2836 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:05,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1175 Valid, 3101 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:18:05,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23621 states. [2022-01-18 01:18:05,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23621 to 16450. [2022-01-18 01:18:05,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16450 states, 16449 states have (on average 2.864247066690984) internal successors, (47114), 16449 states have internal predecessors, (47114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16450 states to 16450 states and 47114 transitions. [2022-01-18 01:18:05,972 INFO L78 Accepts]: Start accepts. Automaton has 16450 states and 47114 transitions. Word has length 177 [2022-01-18 01:18:05,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:05,972 INFO L470 AbstractCegarLoop]: Abstraction has 16450 states and 47114 transitions. [2022-01-18 01:18:05,972 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) [2022-01-18 01:18:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 16450 states and 47114 transitions. [2022-01-18 01:18:05,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:05,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:05,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:05,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-01-18 01:18:05,994 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:05,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:05,994 INFO L85 PathProgramCache]: Analyzing trace with hash 363552436, now seen corresponding path program 58 times [2022-01-18 01:18:05,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:05,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966901822] [2022-01-18 01:18:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:05,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:06,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:06,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966901822] [2022-01-18 01:18:06,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966901822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:06,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:06,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:18:06,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360968079] [2022-01-18 01:18:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:06,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:18:06,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:06,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:18:06,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:18:06,316 INFO L87 Difference]: Start difference. First operand 16450 states and 47114 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) [2022-01-18 01:18:06,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:06,944 INFO L93 Difference]: Finished difference Result 23903 states and 68899 transitions. [2022-01-18 01:18:06,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:18:06,944 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 [2022-01-18 01:18:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:06,985 INFO L225 Difference]: With dead ends: 23903 [2022-01-18 01:18:06,986 INFO L226 Difference]: Without dead ends: 23903 [2022-01-18 01:18:06,986 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 [2022-01-18 01:18:06,986 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1112 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 3006 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:06,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1112 Valid, 3006 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:07,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23903 states. [2022-01-18 01:18:07,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23903 to 16450. [2022-01-18 01:18:07,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16450 states, 16449 states have (on average 2.864247066690984) internal successors, (47114), 16449 states have internal predecessors, (47114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:07,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16450 states to 16450 states and 47114 transitions. [2022-01-18 01:18:07,263 INFO L78 Accepts]: Start accepts. Automaton has 16450 states and 47114 transitions. Word has length 177 [2022-01-18 01:18:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:07,263 INFO L470 AbstractCegarLoop]: Abstraction has 16450 states and 47114 transitions. [2022-01-18 01:18:07,263 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) [2022-01-18 01:18:07,263 INFO L276 IsEmpty]: Start isEmpty. Operand 16450 states and 47114 transitions. [2022-01-18 01:18:07,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:07,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:07,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:07,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-01-18 01:18:07,286 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:07,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:07,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1985312106, now seen corresponding path program 49 times [2022-01-18 01:18:07,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:07,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497241652] [2022-01-18 01:18:07,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:07,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:07,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:07,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497241652] [2022-01-18 01:18:07,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497241652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:07,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:07,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:07,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466564498] [2022-01-18 01:18:07,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:07,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:07,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:07,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:07,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:07,617 INFO L87 Difference]: Start difference. First operand 16450 states and 47114 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) [2022-01-18 01:18:08,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:08,241 INFO L93 Difference]: Finished difference Result 24007 states and 69193 transitions. [2022-01-18 01:18:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:18:08,241 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 [2022-01-18 01:18:08,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:08,283 INFO L225 Difference]: With dead ends: 24007 [2022-01-18 01:18:08,283 INFO L226 Difference]: Without dead ends: 24007 [2022-01-18 01:18:08,283 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 [2022-01-18 01:18:08,283 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 804 mSDsluCounter, 2900 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:08,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 3169 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:08,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24007 states. [2022-01-18 01:18:08,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24007 to 16442. [2022-01-18 01:18:08,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16442 states, 16441 states have (on average 2.863329481175111) internal successors, (47076), 16441 states have internal predecessors, (47076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:08,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16442 states to 16442 states and 47076 transitions. [2022-01-18 01:18:08,556 INFO L78 Accepts]: Start accepts. Automaton has 16442 states and 47076 transitions. Word has length 177 [2022-01-18 01:18:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:08,556 INFO L470 AbstractCegarLoop]: Abstraction has 16442 states and 47076 transitions. [2022-01-18 01:18:08,556 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) [2022-01-18 01:18:08,556 INFO L276 IsEmpty]: Start isEmpty. Operand 16442 states and 47076 transitions. [2022-01-18 01:18:08,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:08,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:08,577 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] [2022-01-18 01:18:08,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-01-18 01:18:08,578 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:08,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:08,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1271126418, now seen corresponding path program 59 times [2022-01-18 01:18:08,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:08,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359390976] [2022-01-18 01:18:08,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:08,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:08,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:08,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:08,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359390976] [2022-01-18 01:18:08,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359390976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:08,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:08,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:18:08,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715205024] [2022-01-18 01:18:08,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:08,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:18:08,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:08,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:18:08,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:18:08,911 INFO L87 Difference]: Start difference. First operand 16442 states and 47076 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) [2022-01-18 01:18:09,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:09,715 INFO L93 Difference]: Finished difference Result 24295 states and 70001 transitions. [2022-01-18 01:18:09,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:18:09,715 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 [2022-01-18 01:18:09,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:09,757 INFO L225 Difference]: With dead ends: 24295 [2022-01-18 01:18:09,757 INFO L226 Difference]: Without dead ends: 24295 [2022-01-18 01:18:09,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=389, Invalid=1251, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 01:18:09,757 INFO L933 BasicCegarLoop]: 368 mSDtfsCounter, 1107 mSDsluCounter, 3860 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 4146 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:09,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1107 Valid, 4146 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 01:18:09,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24295 states. [2022-01-18 01:18:09,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24295 to 16426. [2022-01-18 01:18:10,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16426 states, 16425 states have (on average 2.8634398782343986) internal successors, (47032), 16425 states have internal predecessors, (47032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:10,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16426 states to 16426 states and 47032 transitions. [2022-01-18 01:18:10,047 INFO L78 Accepts]: Start accepts. Automaton has 16426 states and 47032 transitions. Word has length 177 [2022-01-18 01:18:10,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:10,047 INFO L470 AbstractCegarLoop]: Abstraction has 16426 states and 47032 transitions. [2022-01-18 01:18:10,047 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) [2022-01-18 01:18:10,047 INFO L276 IsEmpty]: Start isEmpty. Operand 16426 states and 47032 transitions. [2022-01-18 01:18:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:10,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:10,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:10,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-01-18 01:18:10,070 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:10,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:10,070 INFO L85 PathProgramCache]: Analyzing trace with hash 181940902, now seen corresponding path program 50 times [2022-01-18 01:18:10,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:10,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112229734] [2022-01-18 01:18:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:10,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:10,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:10,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112229734] [2022-01-18 01:18:10,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112229734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:10,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:10,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:10,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440551529] [2022-01-18 01:18:10,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:10,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:10,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:10,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:10,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:10,399 INFO L87 Difference]: Start difference. First operand 16426 states and 47032 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) [2022-01-18 01:18:11,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:11,076 INFO L93 Difference]: Finished difference Result 24071 states and 69369 transitions. [2022-01-18 01:18:11,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:18:11,076 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 [2022-01-18 01:18:11,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:11,121 INFO L225 Difference]: With dead ends: 24071 [2022-01-18 01:18:11,121 INFO L226 Difference]: Without dead ends: 24071 [2022-01-18 01:18:11,121 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 [2022-01-18 01:18:11,122 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 1232 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:11,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1232 Valid, 3279 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:11,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24071 states. [2022-01-18 01:18:11,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24071 to 16442. [2022-01-18 01:18:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16442 states, 16441 states have (on average 2.863329481175111) internal successors, (47076), 16441 states have internal predecessors, (47076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:11,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16442 states to 16442 states and 47076 transitions. [2022-01-18 01:18:11,404 INFO L78 Accepts]: Start accepts. Automaton has 16442 states and 47076 transitions. Word has length 177 [2022-01-18 01:18:11,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:11,404 INFO L470 AbstractCegarLoop]: Abstraction has 16442 states and 47076 transitions. [2022-01-18 01:18:11,404 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) [2022-01-18 01:18:11,404 INFO L276 IsEmpty]: Start isEmpty. Operand 16442 states and 47076 transitions. [2022-01-18 01:18:11,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:11,426 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:11,426 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] [2022-01-18 01:18:11,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-01-18 01:18:11,427 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:11,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1912422520, now seen corresponding path program 51 times [2022-01-18 01:18:11,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:11,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174425333] [2022-01-18 01:18:11,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:11,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:11,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:11,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174425333] [2022-01-18 01:18:11,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174425333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:11,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:11,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:11,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955666907] [2022-01-18 01:18:11,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:11,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:11,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:11,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:11,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:11,746 INFO L87 Difference]: Start difference. First operand 16442 states and 47076 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) [2022-01-18 01:18:12,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:12,519 INFO L93 Difference]: Finished difference Result 24935 states and 71841 transitions. [2022-01-18 01:18:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 01:18:12,519 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 [2022-01-18 01:18:12,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:12,565 INFO L225 Difference]: With dead ends: 24935 [2022-01-18 01:18:12,565 INFO L226 Difference]: Without dead ends: 24935 [2022-01-18 01:18:12,566 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 [2022-01-18 01:18:12,566 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 976 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 3567 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:12,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 3567 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:18:12,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24935 states. [2022-01-18 01:18:12,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24935 to 16386. [2022-01-18 01:18:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16386 states, 16385 states have (on average 2.8622520598108028) internal successors, (46898), 16385 states have internal predecessors, (46898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:12,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16386 states to 16386 states and 46898 transitions. [2022-01-18 01:18:12,846 INFO L78 Accepts]: Start accepts. Automaton has 16386 states and 46898 transitions. Word has length 177 [2022-01-18 01:18:12,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:12,846 INFO L470 AbstractCegarLoop]: Abstraction has 16386 states and 46898 transitions. [2022-01-18 01:18:12,846 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) [2022-01-18 01:18:12,846 INFO L276 IsEmpty]: Start isEmpty. Operand 16386 states and 46898 transitions. [2022-01-18 01:18:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:12,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:12,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:12,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-01-18 01:18:12,868 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:12,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:12,868 INFO L85 PathProgramCache]: Analyzing trace with hash 758245182, now seen corresponding path program 52 times [2022-01-18 01:18:12,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:12,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830373959] [2022-01-18 01:18:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:12,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:13,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:13,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830373959] [2022-01-18 01:18:13,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830373959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:13,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:13,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:18:13,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485987778] [2022-01-18 01:18:13,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:13,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:18:13,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:13,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:18:13,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:18:13,191 INFO L87 Difference]: Start difference. First operand 16386 states and 46898 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) [2022-01-18 01:18:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:13,828 INFO L93 Difference]: Finished difference Result 22923 states and 65943 transitions. [2022-01-18 01:18:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:18:13,829 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 [2022-01-18 01:18:13,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:13,869 INFO L225 Difference]: With dead ends: 22923 [2022-01-18 01:18:13,869 INFO L226 Difference]: Without dead ends: 22923 [2022-01-18 01:18:13,870 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 [2022-01-18 01:18:13,870 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 837 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2791 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:13,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 2791 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:13,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22923 states. [2022-01-18 01:18:14,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22923 to 16386. [2022-01-18 01:18:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16386 states, 16385 states have (on average 2.8622520598108028) internal successors, (46898), 16385 states have internal predecessors, (46898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:14,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16386 states to 16386 states and 46898 transitions. [2022-01-18 01:18:14,129 INFO L78 Accepts]: Start accepts. Automaton has 16386 states and 46898 transitions. Word has length 177 [2022-01-18 01:18:14,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:14,129 INFO L470 AbstractCegarLoop]: Abstraction has 16386 states and 46898 transitions. [2022-01-18 01:18:14,130 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) [2022-01-18 01:18:14,130 INFO L276 IsEmpty]: Start isEmpty. Operand 16386 states and 46898 transitions. [2022-01-18 01:18:14,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:14,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:14,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:14,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-01-18 01:18:14,152 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:14,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:14,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1815179962, now seen corresponding path program 46 times [2022-01-18 01:18:14,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:14,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195216741] [2022-01-18 01:18:14,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:14,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:14,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:14,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:14,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195216741] [2022-01-18 01:18:14,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195216741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:14,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:14,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:14,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772570790] [2022-01-18 01:18:14,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:14,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:14,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:14,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:14,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:14,471 INFO L87 Difference]: Start difference. First operand 16386 states and 46898 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) [2022-01-18 01:18:15,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:15,080 INFO L93 Difference]: Finished difference Result 23035 states and 66267 transitions. [2022-01-18 01:18:15,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:18:15,080 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 [2022-01-18 01:18:15,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:15,120 INFO L225 Difference]: With dead ends: 23035 [2022-01-18 01:18:15,120 INFO L226 Difference]: Without dead ends: 23035 [2022-01-18 01:18:15,120 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 [2022-01-18 01:18:15,120 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 924 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:15,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 2404 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:15,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23035 states. [2022-01-18 01:18:15,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23035 to 16386. [2022-01-18 01:18:15,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16386 states, 16385 states have (on average 2.8622520598108028) internal successors, (46898), 16385 states have internal predecessors, (46898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:15,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16386 states to 16386 states and 46898 transitions. [2022-01-18 01:18:15,382 INFO L78 Accepts]: Start accepts. Automaton has 16386 states and 46898 transitions. Word has length 177 [2022-01-18 01:18:15,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:15,382 INFO L470 AbstractCegarLoop]: Abstraction has 16386 states and 46898 transitions. [2022-01-18 01:18:15,382 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) [2022-01-18 01:18:15,382 INFO L276 IsEmpty]: Start isEmpty. Operand 16386 states and 46898 transitions. [2022-01-18 01:18:15,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:15,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:15,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:15,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-01-18 01:18:15,405 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:15,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:15,405 INFO L85 PathProgramCache]: Analyzing trace with hash -572309710, now seen corresponding path program 47 times [2022-01-18 01:18:15,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:15,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357801388] [2022-01-18 01:18:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:15,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:15,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:15,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357801388] [2022-01-18 01:18:15,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357801388] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:18:15,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638439122] [2022-01-18 01:18:15,716 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:18:15,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:18:15,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:18:15,718 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) [2022-01-18 01:18:15,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 01:18:15,933 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:18:15,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:18:15,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 74 conjunts are in the unsatisfiable core [2022-01-18 01:18:15,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:18:15,959 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 [2022-01-18 01:18:15,977 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 01:18:15,977 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 [2022-01-18 01:18:16,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:18:16,145 INFO L353 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-01-18 01:18:16,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2022-01-18 01:18:16,273 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 [2022-01-18 01:18:16,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:18:16,640 INFO L353 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-01-18 01:18:16,641 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 [2022-01-18 01:18:16,765 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 15 treesize of output 11 [2022-01-18 01:18:17,001 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 [2022-01-18 01:18:17,102 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 [2022-01-18 01:18:17,481 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 [2022-01-18 01:18:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:18:17,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:18:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:17,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638439122] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 01:18:17,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 01:18:17,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20, 24] total 48 [2022-01-18 01:18:17,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240388295] [2022-01-18 01:18:17,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:17,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 01:18:17,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:17,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 01:18:17,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=2016, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 01:18:17,857 INFO L87 Difference]: Start difference. First operand 16386 states and 46898 transitions. Second operand has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:18,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:18,486 INFO L93 Difference]: Finished difference Result 24237 states and 69653 transitions. [2022-01-18 01:18:18,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 01:18:18,487 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have 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 [2022-01-18 01:18:18,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:18,535 INFO L225 Difference]: With dead ends: 24237 [2022-01-18 01:18:18,536 INFO L226 Difference]: Without dead ends: 24237 [2022-01-18 01:18:18,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=413, Invalid=3369, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 01:18:18,536 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 406 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:18,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 2202 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24237 states. [2022-01-18 01:18:18,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24237 to 16132. [2022-01-18 01:18:18,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16132 states, 16131 states have (on average 2.862810737090075) internal successors, (46180), 16131 states have internal predecessors, (46180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:18,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16132 states to 16132 states and 46180 transitions. [2022-01-18 01:18:18,811 INFO L78 Accepts]: Start accepts. Automaton has 16132 states and 46180 transitions. Word has length 177 [2022-01-18 01:18:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:18,811 INFO L470 AbstractCegarLoop]: Abstraction has 16132 states and 46180 transitions. [2022-01-18 01:18:18,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 9 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 16132 states and 46180 transitions. [2022-01-18 01:18:18,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:18,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:18,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:18,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 01:18:19,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2022-01-18 01:18:19,033 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:19,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:19,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1698179548, now seen corresponding path program 53 times [2022-01-18 01:18:19,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:19,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859667419] [2022-01-18 01:18:19,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:19,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:19,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:19,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859667419] [2022-01-18 01:18:19,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859667419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:19,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:19,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:18:19,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373817526] [2022-01-18 01:18:19,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:19,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:18:19,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:19,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:18:19,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:18:19,411 INFO L87 Difference]: Start difference. First operand 16132 states and 46180 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) [2022-01-18 01:18:20,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:20,220 INFO L93 Difference]: Finished difference Result 22915 states and 65937 transitions. [2022-01-18 01:18:20,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:18:20,220 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 [2022-01-18 01:18:20,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:20,257 INFO L225 Difference]: With dead ends: 22915 [2022-01-18 01:18:20,258 INFO L226 Difference]: Without dead ends: 22915 [2022-01-18 01:18:20,258 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 [2022-01-18 01:18:20,258 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1090 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:20,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1090 Valid, 3450 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:18:20,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22915 states. [2022-01-18 01:18:20,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22915 to 16148. [2022-01-18 01:18:20,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16148 states, 16147 states have (on average 2.8636898495076486) internal successors, (46240), 16147 states have internal predecessors, (46240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16148 states to 16148 states and 46240 transitions. [2022-01-18 01:18:20,512 INFO L78 Accepts]: Start accepts. Automaton has 16148 states and 46240 transitions. Word has length 177 [2022-01-18 01:18:20,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:20,512 INFO L470 AbstractCegarLoop]: Abstraction has 16148 states and 46240 transitions. [2022-01-18 01:18:20,513 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) [2022-01-18 01:18:20,513 INFO L276 IsEmpty]: Start isEmpty. Operand 16148 states and 46240 transitions. [2022-01-18 01:18:20,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:20,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:20,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:20,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-01-18 01:18:20,534 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:20,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:20,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1069874186, now seen corresponding path program 48 times [2022-01-18 01:18:20,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:20,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259271198] [2022-01-18 01:18:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:20,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:20,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:20,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259271198] [2022-01-18 01:18:20,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259271198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:20,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:20,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:20,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682764267] [2022-01-18 01:18:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:20,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:20,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:20,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:20,925 INFO L87 Difference]: Start difference. First operand 16148 states and 46240 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) [2022-01-18 01:18:21,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:21,607 INFO L93 Difference]: Finished difference Result 22869 states and 65807 transitions. [2022-01-18 01:18:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:18:21,607 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 [2022-01-18 01:18:21,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:21,647 INFO L225 Difference]: With dead ends: 22869 [2022-01-18 01:18:21,647 INFO L226 Difference]: Without dead ends: 22869 [2022-01-18 01:18:21,647 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 [2022-01-18 01:18:21,647 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 911 mSDsluCounter, 3017 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 3269 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:21,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 3269 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:18:21,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22869 states. [2022-01-18 01:18:21,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22869 to 16156. [2022-01-18 01:18:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16156 states, 16155 states have (on average 2.863633549984525) internal successors, (46262), 16155 states have internal predecessors, (46262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16156 states to 16156 states and 46262 transitions. [2022-01-18 01:18:21,909 INFO L78 Accepts]: Start accepts. Automaton has 16156 states and 46262 transitions. Word has length 177 [2022-01-18 01:18:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:21,909 INFO L470 AbstractCegarLoop]: Abstraction has 16156 states and 46262 transitions. [2022-01-18 01:18:21,909 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) [2022-01-18 01:18:21,909 INFO L276 IsEmpty]: Start isEmpty. Operand 16156 states and 46262 transitions. [2022-01-18 01:18:21,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:21,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:21,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:21,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-01-18 01:18:21,931 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:21,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:21,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1271423076, now seen corresponding path program 60 times [2022-01-18 01:18:21,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:21,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022100688] [2022-01-18 01:18:21,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:21,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:22,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:22,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:22,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022100688] [2022-01-18 01:18:22,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022100688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:22,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:22,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:18:22,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888643065] [2022-01-18 01:18:22,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:22,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:18:22,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:22,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:18:22,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:18:22,261 INFO L87 Difference]: Start difference. First operand 16156 states and 46262 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) [2022-01-18 01:18:22,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:22,927 INFO L93 Difference]: Finished difference Result 23111 states and 66493 transitions. [2022-01-18 01:18:22,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 01:18:22,927 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 [2022-01-18 01:18:22,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:22,967 INFO L225 Difference]: With dead ends: 23111 [2022-01-18 01:18:22,967 INFO L226 Difference]: Without dead ends: 23111 [2022-01-18 01:18:22,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:18:22,968 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 934 mSDsluCounter, 3350 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 3611 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:22,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 3611 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:18:22,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23111 states. [2022-01-18 01:18:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23111 to 16148. [2022-01-18 01:18:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16148 states, 16147 states have (on average 2.8636898495076486) internal successors, (46240), 16147 states have internal predecessors, (46240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:23,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16148 states to 16148 states and 46240 transitions. [2022-01-18 01:18:23,229 INFO L78 Accepts]: Start accepts. Automaton has 16148 states and 46240 transitions. Word has length 177 [2022-01-18 01:18:23,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:23,229 INFO L470 AbstractCegarLoop]: Abstraction has 16148 states and 46240 transitions. [2022-01-18 01:18:23,230 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) [2022-01-18 01:18:23,230 INFO L276 IsEmpty]: Start isEmpty. Operand 16148 states and 46240 transitions. [2022-01-18 01:18:23,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:23,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:23,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:23,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-01-18 01:18:23,251 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:23,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:23,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1401784550, now seen corresponding path program 54 times [2022-01-18 01:18:23,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:23,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921223254] [2022-01-18 01:18:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:23,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:23,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:23,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921223254] [2022-01-18 01:18:23,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921223254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:23,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:23,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:23,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317212727] [2022-01-18 01:18:23,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:23,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:23,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:23,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:23,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:23,575 INFO L87 Difference]: Start difference. First operand 16148 states and 46240 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) [2022-01-18 01:18:24,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:24,165 INFO L93 Difference]: Finished difference Result 23215 states and 66787 transitions. [2022-01-18 01:18:24,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 01:18:24,166 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 [2022-01-18 01:18:24,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:24,205 INFO L225 Difference]: With dead ends: 23215 [2022-01-18 01:18:24,205 INFO L226 Difference]: Without dead ends: 23215 [2022-01-18 01:18:24,206 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 [2022-01-18 01:18:24,206 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1020 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 2777 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:24,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 2777 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:24,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23215 states. [2022-01-18 01:18:24,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23215 to 16124. [2022-01-18 01:18:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16124 states, 16123 states have (on average 2.8623705265769397) internal successors, (46150), 16123 states have internal predecessors, (46150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:24,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16124 states to 16124 states and 46150 transitions. [2022-01-18 01:18:24,465 INFO L78 Accepts]: Start accepts. Automaton has 16124 states and 46150 transitions. Word has length 177 [2022-01-18 01:18:24,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:24,465 INFO L470 AbstractCegarLoop]: Abstraction has 16124 states and 46150 transitions. [2022-01-18 01:18:24,466 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) [2022-01-18 01:18:24,466 INFO L276 IsEmpty]: Start isEmpty. Operand 16124 states and 46150 transitions. [2022-01-18 01:18:24,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:24,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:24,487 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] [2022-01-18 01:18:24,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-01-18 01:18:24,487 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:24,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:24,487 INFO L85 PathProgramCache]: Analyzing trace with hash 920866516, now seen corresponding path program 55 times [2022-01-18 01:18:24,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:24,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708947998] [2022-01-18 01:18:24,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:24,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:24,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:24,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708947998] [2022-01-18 01:18:24,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708947998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:24,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:24,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:18:24,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146786954] [2022-01-18 01:18:24,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:24,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:18:24,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:24,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:18:24,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:18:24,819 INFO L87 Difference]: Start difference. First operand 16124 states and 46150 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) [2022-01-18 01:18:25,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:25,493 INFO L93 Difference]: Finished difference Result 22979 states and 66137 transitions. [2022-01-18 01:18:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:18:25,493 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 [2022-01-18 01:18:25,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:25,533 INFO L225 Difference]: With dead ends: 22979 [2022-01-18 01:18:25,533 INFO L226 Difference]: Without dead ends: 22979 [2022-01-18 01:18:25,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=337, Invalid=1069, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:18:25,534 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 973 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:25,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [973 Valid, 3050 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:18:25,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22979 states. [2022-01-18 01:18:25,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22979 to 16156. [2022-01-18 01:18:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16156 states, 16155 states have (on average 2.863633549984525) internal successors, (46262), 16155 states have internal predecessors, (46262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:25,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16156 states to 16156 states and 46262 transitions. [2022-01-18 01:18:25,798 INFO L78 Accepts]: Start accepts. Automaton has 16156 states and 46262 transitions. Word has length 177 [2022-01-18 01:18:25,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:25,798 INFO L470 AbstractCegarLoop]: Abstraction has 16156 states and 46262 transitions. [2022-01-18 01:18:25,798 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) [2022-01-18 01:18:25,798 INFO L276 IsEmpty]: Start isEmpty. Operand 16156 states and 46262 transitions. [2022-01-18 01:18:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:25,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:25,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:25,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-01-18 01:18:25,821 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:25,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:25,821 INFO L85 PathProgramCache]: Analyzing trace with hash -606047046, now seen corresponding path program 49 times [2022-01-18 01:18:25,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:25,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789092575] [2022-01-18 01:18:25,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:25,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:26,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:26,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789092575] [2022-01-18 01:18:26,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789092575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:26,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:26,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:26,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199609140] [2022-01-18 01:18:26,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:26,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:26,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:26,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:26,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:26,176 INFO L87 Difference]: Start difference. First operand 16156 states and 46262 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) [2022-01-18 01:18:26,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:26,849 INFO L93 Difference]: Finished difference Result 22941 states and 66029 transitions. [2022-01-18 01:18:26,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:18:26,849 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 [2022-01-18 01:18:26,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:26,886 INFO L225 Difference]: With dead ends: 22941 [2022-01-18 01:18:26,886 INFO L226 Difference]: Without dead ends: 22941 [2022-01-18 01:18:26,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:18:26,887 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 814 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:26,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 2734 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22941 states. [2022-01-18 01:18:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22941 to 16172. [2022-01-18 01:18:27,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16172 states, 16171 states have (on average 2.8635211180508318) internal successors, (46306), 16171 states have internal predecessors, (46306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:27,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16172 states to 16172 states and 46306 transitions. [2022-01-18 01:18:27,141 INFO L78 Accepts]: Start accepts. Automaton has 16172 states and 46306 transitions. Word has length 177 [2022-01-18 01:18:27,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:27,141 INFO L470 AbstractCegarLoop]: Abstraction has 16172 states and 46306 transitions. [2022-01-18 01:18:27,142 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) [2022-01-18 01:18:27,142 INFO L276 IsEmpty]: Start isEmpty. Operand 16172 states and 46306 transitions. [2022-01-18 01:18:27,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:27,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:27,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:27,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-01-18 01:18:27,163 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:27,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:27,163 INFO L85 PathProgramCache]: Analyzing trace with hash -404498156, now seen corresponding path program 61 times [2022-01-18 01:18:27,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:27,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687744401] [2022-01-18 01:18:27,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:27,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:27,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:27,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687744401] [2022-01-18 01:18:27,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687744401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:27,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:27,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:18:27,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738175111] [2022-01-18 01:18:27,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:27,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:18:27,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:27,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:18:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:18:27,487 INFO L87 Difference]: Start difference. First operand 16172 states and 46306 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) [2022-01-18 01:18:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:28,081 INFO L93 Difference]: Finished difference Result 23199 states and 66759 transitions. [2022-01-18 01:18:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:18:28,082 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 [2022-01-18 01:18:28,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:28,122 INFO L225 Difference]: With dead ends: 23199 [2022-01-18 01:18:28,122 INFO L226 Difference]: Without dead ends: 23199 [2022-01-18 01:18:28,122 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 [2022-01-18 01:18:28,122 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1031 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:28,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 2762 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:28,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23199 states. [2022-01-18 01:18:28,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23199 to 16172. [2022-01-18 01:18:28,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16172 states, 16171 states have (on average 2.8635211180508318) internal successors, (46306), 16171 states have internal predecessors, (46306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:28,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16172 states to 16172 states and 46306 transitions. [2022-01-18 01:18:28,377 INFO L78 Accepts]: Start accepts. Automaton has 16172 states and 46306 transitions. Word has length 177 [2022-01-18 01:18:28,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:28,377 INFO L470 AbstractCegarLoop]: Abstraction has 16172 states and 46306 transitions. [2022-01-18 01:18:28,377 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) [2022-01-18 01:18:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand 16172 states and 46306 transitions. [2022-01-18 01:18:28,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:28,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:28,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:28,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-01-18 01:18:28,398 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:28,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:28,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1217261514, now seen corresponding path program 56 times [2022-01-18 01:18:28,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:28,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492783542] [2022-01-18 01:18:28,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:28,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:28,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:28,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:28,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492783542] [2022-01-18 01:18:28,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492783542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:28,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:28,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:28,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907965333] [2022-01-18 01:18:28,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:28,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:28,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:28,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:28,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:28,718 INFO L87 Difference]: Start difference. First operand 16172 states and 46306 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) [2022-01-18 01:18:29,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:29,311 INFO L93 Difference]: Finished difference Result 23311 states and 67075 transitions. [2022-01-18 01:18:29,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:18:29,311 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 [2022-01-18 01:18:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:29,351 INFO L225 Difference]: With dead ends: 23311 [2022-01-18 01:18:29,352 INFO L226 Difference]: Without dead ends: 23311 [2022-01-18 01:18:29,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:18:29,352 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 819 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:29,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [819 Valid, 2533 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:29,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23311 states. [2022-01-18 01:18:29,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23311 to 16164. [2022-01-18 01:18:29,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16164 states, 16163 states have (on average 2.8625873909546495) internal successors, (46268), 16163 states have internal predecessors, (46268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:29,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16164 states to 16164 states and 46268 transitions. [2022-01-18 01:18:29,613 INFO L78 Accepts]: Start accepts. Automaton has 16164 states and 46268 transitions. Word has length 177 [2022-01-18 01:18:29,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:29,613 INFO L470 AbstractCegarLoop]: Abstraction has 16164 states and 46268 transitions. [2022-01-18 01:18:29,613 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) [2022-01-18 01:18:29,613 INFO L276 IsEmpty]: Start isEmpty. Operand 16164 states and 46268 transitions. [2022-01-18 01:18:29,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:29,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:29,634 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] [2022-01-18 01:18:29,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-01-18 01:18:29,635 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:29,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:29,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2039177010, now seen corresponding path program 62 times [2022-01-18 01:18:29,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:29,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247652680] [2022-01-18 01:18:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:29,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:29,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:29,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:29,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247652680] [2022-01-18 01:18:29,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247652680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:29,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:29,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:18:29,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802345887] [2022-01-18 01:18:29,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:29,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:18:29,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:29,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:18:29,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:18:29,972 INFO L87 Difference]: Start difference. First operand 16164 states and 46268 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) [2022-01-18 01:18:30,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:30,583 INFO L93 Difference]: Finished difference Result 23535 states and 67691 transitions. [2022-01-18 01:18:30,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:18:30,583 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 [2022-01-18 01:18:30,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:30,624 INFO L225 Difference]: With dead ends: 23535 [2022-01-18 01:18:30,624 INFO L226 Difference]: Without dead ends: 23535 [2022-01-18 01:18:30,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=365, Invalid=1195, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 01:18:30,625 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 995 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:30,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 2964 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:30,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23535 states. [2022-01-18 01:18:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23535 to 16148. [2022-01-18 01:18:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16148 states, 16147 states have (on average 2.86269895336595) internal successors, (46224), 16147 states have internal predecessors, (46224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16148 states to 16148 states and 46224 transitions. [2022-01-18 01:18:30,900 INFO L78 Accepts]: Start accepts. Automaton has 16148 states and 46224 transitions. Word has length 177 [2022-01-18 01:18:30,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:30,900 INFO L470 AbstractCegarLoop]: Abstraction has 16148 states and 46224 transitions. [2022-01-18 01:18:30,901 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) [2022-01-18 01:18:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 16148 states and 46224 transitions. [2022-01-18 01:18:30,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:30,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:30,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:30,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-01-18 01:18:30,922 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:30,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:30,923 INFO L85 PathProgramCache]: Analyzing trace with hash -586109690, now seen corresponding path program 57 times [2022-01-18 01:18:30,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:30,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044461346] [2022-01-18 01:18:30,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:30,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:31,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:31,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044461346] [2022-01-18 01:18:31,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044461346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:31,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:31,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:31,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43489806] [2022-01-18 01:18:31,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:31,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:31,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:31,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:31,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:31,262 INFO L87 Difference]: Start difference. First operand 16148 states and 46224 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) [2022-01-18 01:18:31,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:31,850 INFO L93 Difference]: Finished difference Result 23319 states and 67081 transitions. [2022-01-18 01:18:31,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 01:18:31,850 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 [2022-01-18 01:18:31,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:31,889 INFO L225 Difference]: With dead ends: 23319 [2022-01-18 01:18:31,890 INFO L226 Difference]: Without dead ends: 23319 [2022-01-18 01:18:31,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=357, Invalid=1125, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 01:18:31,890 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1032 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:31,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 2708 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:31,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23319 states. [2022-01-18 01:18:32,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23319 to 16164. [2022-01-18 01:18:32,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16164 states, 16163 states have (on average 2.8625873909546495) internal successors, (46268), 16163 states have internal predecessors, (46268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:32,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16164 states to 16164 states and 46268 transitions. [2022-01-18 01:18:32,151 INFO L78 Accepts]: Start accepts. Automaton has 16164 states and 46268 transitions. Word has length 177 [2022-01-18 01:18:32,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:32,151 INFO L470 AbstractCegarLoop]: Abstraction has 16164 states and 46268 transitions. [2022-01-18 01:18:32,151 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) [2022-01-18 01:18:32,151 INFO L276 IsEmpty]: Start isEmpty. Operand 16164 states and 46268 transitions. [2022-01-18 01:18:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:32,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:32,174 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] [2022-01-18 01:18:32,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-01-18 01:18:32,175 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:32,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:32,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1614494184, now seen corresponding path program 58 times [2022-01-18 01:18:32,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:32,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521316677] [2022-01-18 01:18:32,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:32,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:32,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:32,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521316677] [2022-01-18 01:18:32,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521316677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:32,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:32,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:32,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135976125] [2022-01-18 01:18:32,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:32,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:32,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:32,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:32,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:32,499 INFO L87 Difference]: Start difference. First operand 16164 states and 46268 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) [2022-01-18 01:18:33,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:33,222 INFO L93 Difference]: Finished difference Result 24183 states and 69553 transitions. [2022-01-18 01:18:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 01:18:33,222 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 [2022-01-18 01:18:33,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:33,264 INFO L225 Difference]: With dead ends: 24183 [2022-01-18 01:18:33,264 INFO L226 Difference]: Without dead ends: 24183 [2022-01-18 01:18:33,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=386, Invalid=1254, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 01:18:33,264 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 1196 mSDsluCounter, 2647 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 2943 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:33,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1196 Valid, 2943 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 01:18:33,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24183 states. [2022-01-18 01:18:33,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24183 to 16100. [2022-01-18 01:18:33,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16100 states, 16099 states have (on average 2.8625380458413567) internal successors, (46084), 16099 states have internal predecessors, (46084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:33,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16100 states to 16100 states and 46084 transitions. [2022-01-18 01:18:33,532 INFO L78 Accepts]: Start accepts. Automaton has 16100 states and 46084 transitions. Word has length 177 [2022-01-18 01:18:33,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:33,532 INFO L470 AbstractCegarLoop]: Abstraction has 16100 states and 46084 transitions. [2022-01-18 01:18:33,533 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) [2022-01-18 01:18:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand 16100 states and 46084 transitions. [2022-01-18 01:18:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:33,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:33,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:33,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-01-18 01:18:33,555 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:33,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:33,555 INFO L85 PathProgramCache]: Analyzing trace with hash 64342592, now seen corresponding path program 63 times [2022-01-18 01:18:33,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:33,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989850425] [2022-01-18 01:18:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:33,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:33,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:33,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989850425] [2022-01-18 01:18:33,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989850425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:33,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:33,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:33,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2463719] [2022-01-18 01:18:33,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:33,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:33,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:33,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:33,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:33,815 INFO L87 Difference]: Start difference. First operand 16100 states and 46084 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) [2022-01-18 01:18:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:34,524 INFO L93 Difference]: Finished difference Result 26370 states and 75770 transitions. [2022-01-18 01:18:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 01:18:34,525 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 [2022-01-18 01:18:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:34,574 INFO L225 Difference]: With dead ends: 26370 [2022-01-18 01:18:34,575 INFO L226 Difference]: Without dead ends: 26370 [2022-01-18 01:18:34,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=393, Invalid=1247, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 01:18:34,575 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 1117 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 3920 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:34,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1117 Valid, 3920 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26370 states. [2022-01-18 01:18:34,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26370 to 16100. [2022-01-18 01:18:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16100 states, 16099 states have (on average 2.8625380458413567) internal successors, (46084), 16099 states have internal predecessors, (46084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:34,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16100 states to 16100 states and 46084 transitions. [2022-01-18 01:18:34,867 INFO L78 Accepts]: Start accepts. Automaton has 16100 states and 46084 transitions. Word has length 177 [2022-01-18 01:18:34,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:34,867 INFO L470 AbstractCegarLoop]: Abstraction has 16100 states and 46084 transitions. [2022-01-18 01:18:34,867 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) [2022-01-18 01:18:34,867 INFO L276 IsEmpty]: Start isEmpty. Operand 16100 states and 46084 transitions. [2022-01-18 01:18:34,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:34,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:34,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:34,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-01-18 01:18:34,890 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:34,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:34,890 INFO L85 PathProgramCache]: Analyzing trace with hash 973513084, now seen corresponding path program 59 times [2022-01-18 01:18:34,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:34,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485727867] [2022-01-18 01:18:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:34,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:35,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:35,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485727867] [2022-01-18 01:18:35,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485727867] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:18:35,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251158079] [2022-01-18 01:18:35,168 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:18:35,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:18:35,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:18:35,169 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) [2022-01-18 01:18:35,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 01:18:35,396 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:18:35,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:18:35,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 65 conjunts are in the unsatisfiable core [2022-01-18 01:18:35,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:18:35,542 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 [2022-01-18 01:18:35,651 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 [2022-01-18 01:18:35,964 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:18:35,965 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 [2022-01-18 01:18:36,125 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 [2022-01-18 01:18:36,382 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 [2022-01-18 01:18:36,479 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 [2022-01-18 01:18:36,929 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 [2022-01-18 01:18:36,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:18:36,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:18:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:37,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251158079] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:18:37,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:18:37,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 9] total 49 [2022-01-18 01:18:37,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251965130] [2022-01-18 01:18:37,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:18:37,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 01:18:37,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:37,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 01:18:37,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2129, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 01:18:37,341 INFO L87 Difference]: Start difference. First operand 16100 states and 46084 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) [2022-01-18 01:18:44,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:44,353 INFO L93 Difference]: Finished difference Result 49738 states and 143317 transitions. [2022-01-18 01:18:44,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 01:18:44,353 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 [2022-01-18 01:18:44,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:44,460 INFO L225 Difference]: With dead ends: 49738 [2022-01-18 01:18:44,460 INFO L226 Difference]: Without dead ends: 49738 [2022-01-18 01:18:44,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 331 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3190 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2636, Invalid=10246, Unknown=0, NotChecked=0, Total=12882 [2022-01-18 01:18:44,462 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 4274 mSDsluCounter, 9859 mSDsCounter, 0 mSdLazyCounter, 2844 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4274 SdHoareTripleChecker+Valid, 10193 SdHoareTripleChecker+Invalid, 3252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 361 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:44,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4274 Valid, 10193 Invalid, 3252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2844 Invalid, 0 Unknown, 361 Unchecked, 1.3s Time] [2022-01-18 01:18:44,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49738 states. [2022-01-18 01:18:44,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49738 to 17780. [2022-01-18 01:18:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17780 states, 17779 states have (on average 2.8762022610945497) internal successors, (51136), 17779 states have internal predecessors, (51136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17780 states to 17780 states and 51136 transitions. [2022-01-18 01:18:45,034 INFO L78 Accepts]: Start accepts. Automaton has 17780 states and 51136 transitions. Word has length 177 [2022-01-18 01:18:45,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:45,034 INFO L470 AbstractCegarLoop]: Abstraction has 17780 states and 51136 transitions. [2022-01-18 01:18:45,035 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) [2022-01-18 01:18:45,035 INFO L276 IsEmpty]: Start isEmpty. Operand 17780 states and 51136 transitions. [2022-01-18 01:18:45,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:45,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:45,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:45,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 01:18:45,258 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,SelfDestructingSolverStorable239 [2022-01-18 01:18:45,258 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:45,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:45,260 INFO L85 PathProgramCache]: Analyzing trace with hash 660843338, now seen corresponding path program 60 times [2022-01-18 01:18:45,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:45,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058443827] [2022-01-18 01:18:45,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:45,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:45,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:45,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058443827] [2022-01-18 01:18:45,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058443827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:45,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:45,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:18:45,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189484366] [2022-01-18 01:18:45,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:45,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:18:45,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:45,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:18:45,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:18:45,575 INFO L87 Difference]: Start difference. First operand 17780 states and 51136 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) [2022-01-18 01:18:46,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:46,146 INFO L93 Difference]: Finished difference Result 23883 states and 68771 transitions. [2022-01-18 01:18:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 01:18:46,146 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 [2022-01-18 01:18:46,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:46,186 INFO L225 Difference]: With dead ends: 23883 [2022-01-18 01:18:46,186 INFO L226 Difference]: Without dead ends: 23883 [2022-01-18 01:18:46,186 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 [2022-01-18 01:18:46,187 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1351 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:46,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1351 Valid, 2572 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:46,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23883 states. [2022-01-18 01:18:46,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23883 to 17756. [2022-01-18 01:18:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17756 states, 17755 states have (on average 2.8745705435088706) internal successors, (51038), 17755 states have internal predecessors, (51038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:46,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17756 states to 17756 states and 51038 transitions. [2022-01-18 01:18:46,465 INFO L78 Accepts]: Start accepts. Automaton has 17756 states and 51038 transitions. Word has length 177 [2022-01-18 01:18:46,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:46,465 INFO L470 AbstractCegarLoop]: Abstraction has 17756 states and 51038 transitions. [2022-01-18 01:18:46,465 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) [2022-01-18 01:18:46,465 INFO L276 IsEmpty]: Start isEmpty. Operand 17756 states and 51038 transitions. [2022-01-18 01:18:46,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:46,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:46,489 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] [2022-01-18 01:18:46,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-01-18 01:18:46,489 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:46,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:46,489 INFO L85 PathProgramCache]: Analyzing trace with hash -866070224, now seen corresponding path program 50 times [2022-01-18 01:18:46,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:46,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954960617] [2022-01-18 01:18:46,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:46,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:46,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:46,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954960617] [2022-01-18 01:18:46,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954960617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:46,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:46,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:46,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520451997] [2022-01-18 01:18:46,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:46,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:46,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:46,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:46,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:46,811 INFO L87 Difference]: Start difference. First operand 17756 states and 51038 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) [2022-01-18 01:18:47,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:47,375 INFO L93 Difference]: Finished difference Result 23459 states and 67305 transitions. [2022-01-18 01:18:47,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 01:18:47,375 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 [2022-01-18 01:18:47,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:47,416 INFO L225 Difference]: With dead ends: 23459 [2022-01-18 01:18:47,416 INFO L226 Difference]: Without dead ends: 23459 [2022-01-18 01:18:47,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 01:18:47,416 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 972 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:47,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [972 Valid, 2741 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:47,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23459 states. [2022-01-18 01:18:47,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23459 to 17284. [2022-01-18 01:18:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17284 states, 17283 states have (on average 2.8601515940519584) internal successors, (49432), 17283 states have internal predecessors, (49432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:47,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17284 states to 17284 states and 49432 transitions. [2022-01-18 01:18:47,678 INFO L78 Accepts]: Start accepts. Automaton has 17284 states and 49432 transitions. Word has length 177 [2022-01-18 01:18:47,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:47,679 INFO L470 AbstractCegarLoop]: Abstraction has 17284 states and 49432 transitions. [2022-01-18 01:18:47,679 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) [2022-01-18 01:18:47,679 INFO L276 IsEmpty]: Start isEmpty. Operand 17284 states and 49432 transitions. [2022-01-18 01:18:47,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:47,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:47,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:47,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-01-18 01:18:47,702 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:47,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:47,702 INFO L85 PathProgramCache]: Analyzing trace with hash -664521334, now seen corresponding path program 64 times [2022-01-18 01:18:47,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:47,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993468199] [2022-01-18 01:18:47,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:47,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:48,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:48,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993468199] [2022-01-18 01:18:48,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993468199] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:48,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:48,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:18:48,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341542546] [2022-01-18 01:18:48,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:48,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:18:48,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:48,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:18:48,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:18:48,030 INFO L87 Difference]: Start difference. First operand 17284 states and 49432 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) [2022-01-18 01:18:48,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:48,553 INFO L93 Difference]: Finished difference Result 23501 states and 67417 transitions. [2022-01-18 01:18:48,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 01:18:48,553 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 [2022-01-18 01:18:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:48,592 INFO L225 Difference]: With dead ends: 23501 [2022-01-18 01:18:48,593 INFO L226 Difference]: Without dead ends: 23501 [2022-01-18 01:18:48,593 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 [2022-01-18 01:18:48,593 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 741 mSDsluCounter, 2813 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:48,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 3095 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 770 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:48,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23501 states. [2022-01-18 01:18:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23501 to 17284. [2022-01-18 01:18:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17284 states, 17283 states have (on average 2.8601515940519584) internal successors, (49432), 17283 states have internal predecessors, (49432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:48,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17284 states to 17284 states and 49432 transitions. [2022-01-18 01:18:48,858 INFO L78 Accepts]: Start accepts. Automaton has 17284 states and 49432 transitions. Word has length 177 [2022-01-18 01:18:48,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:48,859 INFO L470 AbstractCegarLoop]: Abstraction has 17284 states and 49432 transitions. [2022-01-18 01:18:48,859 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) [2022-01-18 01:18:48,859 INFO L276 IsEmpty]: Start isEmpty. Operand 17284 states and 49432 transitions. [2022-01-18 01:18:48,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:48,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:48,881 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] [2022-01-18 01:18:48,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-01-18 01:18:48,881 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:48,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:48,881 INFO L85 PathProgramCache]: Analyzing trace with hash -200946592, now seen corresponding path program 38 times [2022-01-18 01:18:48,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:48,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995948143] [2022-01-18 01:18:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:48,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:49,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:49,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995948143] [2022-01-18 01:18:49,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995948143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:49,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:49,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:49,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766535043] [2022-01-18 01:18:49,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:49,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:49,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:49,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:49,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:49,206 INFO L87 Difference]: Start difference. First operand 17284 states and 49432 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) [2022-01-18 01:18:49,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:49,756 INFO L93 Difference]: Finished difference Result 23725 states and 68065 transitions. [2022-01-18 01:18:49,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 01:18:49,756 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 [2022-01-18 01:18:49,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:49,796 INFO L225 Difference]: With dead ends: 23725 [2022-01-18 01:18:49,796 INFO L226 Difference]: Without dead ends: 23725 [2022-01-18 01:18:49,797 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 [2022-01-18 01:18:49,797 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 924 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:49,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 2849 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:49,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23725 states. [2022-01-18 01:18:50,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23725 to 17276. [2022-01-18 01:18:50,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17276 states, 17275 states have (on average 2.859276410998553) internal successors, (49394), 17275 states have internal predecessors, (49394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:50,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17276 states to 17276 states and 49394 transitions. [2022-01-18 01:18:50,063 INFO L78 Accepts]: Start accepts. Automaton has 17276 states and 49394 transitions. Word has length 177 [2022-01-18 01:18:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:50,063 INFO L470 AbstractCegarLoop]: Abstraction has 17276 states and 49394 transitions. [2022-01-18 01:18:50,064 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) [2022-01-18 01:18:50,064 INFO L276 IsEmpty]: Start isEmpty. Operand 17276 states and 49394 transitions. [2022-01-18 01:18:50,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:50,086 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:50,086 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] [2022-01-18 01:18:50,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-01-18 01:18:50,086 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:50,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:50,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1995767108, now seen corresponding path program 65 times [2022-01-18 01:18:50,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:50,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792331296] [2022-01-18 01:18:50,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:50,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:50,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:50,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792331296] [2022-01-18 01:18:50,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792331296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:50,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:50,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 01:18:50,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511769105] [2022-01-18 01:18:50,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:50,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 01:18:50,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:50,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 01:18:50,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-01-18 01:18:50,466 INFO L87 Difference]: Start difference. First operand 17276 states and 49394 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) [2022-01-18 01:18:51,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:51,032 INFO L93 Difference]: Finished difference Result 23909 states and 68563 transitions. [2022-01-18 01:18:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:18:51,032 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 [2022-01-18 01:18:51,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:51,072 INFO L225 Difference]: With dead ends: 23909 [2022-01-18 01:18:51,072 INFO L226 Difference]: Without dead ends: 23909 [2022-01-18 01:18:51,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1082, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:18:51,073 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 876 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:51,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 2835 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:51,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23909 states. [2022-01-18 01:18:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23909 to 17276. [2022-01-18 01:18:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17276 states, 17275 states have (on average 2.859276410998553) internal successors, (49394), 17275 states have internal predecessors, (49394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17276 states to 17276 states and 49394 transitions. [2022-01-18 01:18:51,348 INFO L78 Accepts]: Start accepts. Automaton has 17276 states and 49394 transitions. Word has length 177 [2022-01-18 01:18:51,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:51,349 INFO L470 AbstractCegarLoop]: Abstraction has 17276 states and 49394 transitions. [2022-01-18 01:18:51,349 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) [2022-01-18 01:18:51,349 INFO L276 IsEmpty]: Start isEmpty. Operand 17276 states and 49394 transitions. [2022-01-18 01:18:51,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:51,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:51,371 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] [2022-01-18 01:18:51,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-01-18 01:18:51,371 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:51,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:51,371 INFO L85 PathProgramCache]: Analyzing trace with hash -2004317796, now seen corresponding path program 39 times [2022-01-18 01:18:51,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:51,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199729542] [2022-01-18 01:18:51,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:51,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:51,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:51,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199729542] [2022-01-18 01:18:51,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199729542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:51,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:51,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:51,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574678516] [2022-01-18 01:18:51,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:51,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:51,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:51,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:51,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:51,768 INFO L87 Difference]: Start difference. First operand 17276 states and 49394 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) [2022-01-18 01:18:52,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:52,385 INFO L93 Difference]: Finished difference Result 23637 states and 67799 transitions. [2022-01-18 01:18:52,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 01:18:52,385 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 [2022-01-18 01:18:52,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:52,425 INFO L225 Difference]: With dead ends: 23637 [2022-01-18 01:18:52,425 INFO L226 Difference]: Without dead ends: 23637 [2022-01-18 01:18:52,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 01:18:52,426 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 1186 mSDsluCounter, 2745 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 3036 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:52,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1186 Valid, 3036 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:52,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23637 states. [2022-01-18 01:18:52,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23637 to 17196. [2022-01-18 01:18:52,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17196 states, 17195 states have (on average 2.858854318115731) internal successors, (49158), 17195 states have internal predecessors, (49158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:52,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17196 states to 17196 states and 49158 transitions. [2022-01-18 01:18:52,685 INFO L78 Accepts]: Start accepts. Automaton has 17196 states and 49158 transitions. Word has length 177 [2022-01-18 01:18:52,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:52,686 INFO L470 AbstractCegarLoop]: Abstraction has 17196 states and 49158 transitions. [2022-01-18 01:18:52,686 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) [2022-01-18 01:18:52,686 INFO L276 IsEmpty]: Start isEmpty. Operand 17196 states and 49158 transitions. [2022-01-18 01:18:52,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:52,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:52,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:52,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-01-18 01:18:52,708 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:52,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:52,708 INFO L85 PathProgramCache]: Analyzing trace with hash 196286078, now seen corresponding path program 40 times [2022-01-18 01:18:52,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:52,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768619452] [2022-01-18 01:18:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:52,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:53,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:53,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768619452] [2022-01-18 01:18:53,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768619452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:53,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:53,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:53,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135474132] [2022-01-18 01:18:53,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:53,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:53,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:53,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:53,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:53,009 INFO L87 Difference]: Start difference. First operand 17196 states and 49158 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) [2022-01-18 01:18:53,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:53,673 INFO L93 Difference]: Finished difference Result 22989 states and 65729 transitions. [2022-01-18 01:18:53,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 01:18:53,673 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 [2022-01-18 01:18:53,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:53,710 INFO L225 Difference]: With dead ends: 22989 [2022-01-18 01:18:53,710 INFO L226 Difference]: Without dead ends: 22989 [2022-01-18 01:18:53,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=362, Invalid=1198, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 01:18:53,710 INFO L933 BasicCegarLoop]: 359 mSDtfsCounter, 1056 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:53,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 3051 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:53,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22989 states. [2022-01-18 01:18:53,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22989 to 15628. [2022-01-18 01:18:53,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15628 states, 15627 states have (on average 2.843668010494657) internal successors, (44438), 15627 states have internal predecessors, (44438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15628 states to 15628 states and 44438 transitions. [2022-01-18 01:18:53,961 INFO L78 Accepts]: Start accepts. Automaton has 15628 states and 44438 transitions. Word has length 177 [2022-01-18 01:18:53,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:53,961 INFO L470 AbstractCegarLoop]: Abstraction has 15628 states and 44438 transitions. [2022-01-18 01:18:53,961 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) [2022-01-18 01:18:53,961 INFO L276 IsEmpty]: Start isEmpty. Operand 15628 states and 44438 transitions. [2022-01-18 01:18:53,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:53,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:53,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:53,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-01-18 01:18:53,981 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:53,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:53,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1320257190, now seen corresponding path program 66 times [2022-01-18 01:18:53,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:53,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863500873] [2022-01-18 01:18:53,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:53,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:54,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:54,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:54,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863500873] [2022-01-18 01:18:54,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863500873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:54,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:18:54,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 01:18:54,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657335556] [2022-01-18 01:18:54,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:54,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 01:18:54,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:54,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 01:18:54,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-01-18 01:18:54,231 INFO L87 Difference]: Start difference. First operand 15628 states and 44438 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) [2022-01-18 01:18:54,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:54,858 INFO L93 Difference]: Finished difference Result 22720 states and 64836 transitions. [2022-01-18 01:18:54,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 01:18:54,858 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 [2022-01-18 01:18:54,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:54,895 INFO L225 Difference]: With dead ends: 22720 [2022-01-18 01:18:54,895 INFO L226 Difference]: Without dead ends: 22720 [2022-01-18 01:18:54,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=316, Invalid=1016, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 01:18:54,896 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 1404 mSDsluCounter, 3543 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 3874 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:54,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1404 Valid, 3874 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:18:54,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22720 states. [2022-01-18 01:18:55,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22720 to 14780. [2022-01-18 01:18:55,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14780 states, 14779 states have (on average 2.8403816225725693) internal successors, (41978), 14779 states have internal predecessors, (41978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14780 states to 14780 states and 41978 transitions. [2022-01-18 01:18:55,137 INFO L78 Accepts]: Start accepts. Automaton has 14780 states and 41978 transitions. Word has length 177 [2022-01-18 01:18:55,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:55,137 INFO L470 AbstractCegarLoop]: Abstraction has 14780 states and 41978 transitions. [2022-01-18 01:18:55,137 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) [2022-01-18 01:18:55,137 INFO L276 IsEmpty]: Start isEmpty. Operand 14780 states and 41978 transitions. [2022-01-18 01:18:55,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 01:18:55,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:55,156 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] [2022-01-18 01:18:55,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-01-18 01:18:55,156 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:55,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1967543744, now seen corresponding path program 61 times [2022-01-18 01:18:55,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:55,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656478794] [2022-01-18 01:18:55,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:55,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:55,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:55,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656478794] [2022-01-18 01:18:55,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656478794] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:18:55,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144750122] [2022-01-18 01:18:55,420 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:18:55,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:18:55,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:18:55,421 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) [2022-01-18 01:18:55,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 01:18:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:55,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 01:18:55,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:18:56,088 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 01:18:56,089 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 [2022-01-18 01:18:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:56,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:18:56,342 INFO L353 Elim1Store]: treesize reduction 42, result has 50.6 percent of original size [2022-01-18 01:18:56,343 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 [2022-01-18 01:18:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:56,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144750122] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:18:56,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:18:56,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 9] total 32 [2022-01-18 01:18:56,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923832857] [2022-01-18 01:18:56,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:18:56,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 01:18:56,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:56,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 01:18:56,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2022-01-18 01:18:56,458 INFO L87 Difference]: Start difference. First operand 14780 states and 41978 transitions. Second operand has 32 states, 32 states have (on average 9.21875) internal successors, (295), 32 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:57,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:57,756 INFO L93 Difference]: Finished difference Result 22605 states and 64526 transitions. [2022-01-18 01:18:57,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 01:18:57,756 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.21875) internal successors, (295), 32 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have 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 [2022-01-18 01:18:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:57,792 INFO L225 Difference]: With dead ends: 22605 [2022-01-18 01:18:57,792 INFO L226 Difference]: Without dead ends: 22605 [2022-01-18 01:18:57,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 351 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=692, Invalid=2848, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 01:18:57,793 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 1777 mSDsluCounter, 6817 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1777 SdHoareTripleChecker+Valid, 7180 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:57,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1777 Valid, 7180 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1774 Invalid, 0 Unknown, 134 Unchecked, 0.7s Time] [2022-01-18 01:18:57,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22605 states. [2022-01-18 01:18:58,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22605 to 14528. [2022-01-18 01:18:58,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14528 states, 14527 states have (on average 2.840022027947959) internal successors, (41257), 14527 states have internal predecessors, (41257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:58,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14528 states to 14528 states and 41257 transitions. [2022-01-18 01:18:58,083 INFO L78 Accepts]: Start accepts. Automaton has 14528 states and 41257 transitions. Word has length 177 [2022-01-18 01:18:58,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:58,083 INFO L470 AbstractCegarLoop]: Abstraction has 14528 states and 41257 transitions. [2022-01-18 01:18:58,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.21875) internal successors, (295), 32 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:58,083 INFO L276 IsEmpty]: Start isEmpty. Operand 14528 states and 41257 transitions. [2022-01-18 01:18:58,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-18 01:18:58,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:58,102 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] [2022-01-18 01:18:58,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 01:18:58,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:18:58,302 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:58,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:58,304 INFO L85 PathProgramCache]: Analyzing trace with hash 151786433, now seen corresponding path program 2 times [2022-01-18 01:18:58,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:58,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632204809] [2022-01-18 01:18:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:58,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:18:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:18:58,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:18:58,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632204809] [2022-01-18 01:18:58,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632204809] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:18:58,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701904354] [2022-01-18 01:18:58,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:18:58,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:18:58,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:18:58,466 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) [2022-01-18 01:18:58,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 01:18:58,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-18 01:18:58,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:18:58,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 01:18:58,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:18:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 01:18:59,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 01:18:59,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701904354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:18:59,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 01:18:59,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2022-01-18 01:18:59,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685190867] [2022-01-18 01:18:59,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:18:59,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 01:18:59,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:18:59,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 01:18:59,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-01-18 01:18:59,116 INFO L87 Difference]: Start difference. First operand 14528 states and 41257 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) [2022-01-18 01:18:59,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:18:59,481 INFO L93 Difference]: Finished difference Result 15263 states and 42926 transitions. [2022-01-18 01:18:59,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 01:18:59,482 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 [2022-01-18 01:18:59,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:18:59,506 INFO L225 Difference]: With dead ends: 15263 [2022-01-18 01:18:59,506 INFO L226 Difference]: Without dead ends: 15154 [2022-01-18 01:18:59,506 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 [2022-01-18 01:18:59,507 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 112 mSDsluCounter, 1881 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:18:59,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 2071 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:18:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15154 states. [2022-01-18 01:18:59,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15154 to 8352. [2022-01-18 01:18:59,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8352 states, 8351 states have (on average 2.776553706142977) internal successors, (23187), 8351 states have internal predecessors, (23187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:18:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8352 states to 8352 states and 23187 transitions. [2022-01-18 01:18:59,631 INFO L78 Accepts]: Start accepts. Automaton has 8352 states and 23187 transitions. Word has length 180 [2022-01-18 01:18:59,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:18:59,631 INFO L470 AbstractCegarLoop]: Abstraction has 8352 states and 23187 transitions. [2022-01-18 01:18:59,632 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) [2022-01-18 01:18:59,632 INFO L276 IsEmpty]: Start isEmpty. Operand 8352 states and 23187 transitions. [2022-01-18 01:18:59,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:18:59,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:18:59,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:18:59,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 01:18:59,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:18:59,841 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:18:59,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:18:59,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1442899840, now seen corresponding path program 1 times [2022-01-18 01:18:59,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:18:59,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325810053] [2022-01-18 01:18:59,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:18:59,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:18:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:00,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:00,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325810053] [2022-01-18 01:19:00,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325810053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:00,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:00,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 01:19:00,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052306986] [2022-01-18 01:19:00,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:00,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 01:19:00,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:00,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 01:19:00,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-01-18 01:19:00,089 INFO L87 Difference]: Start difference. First operand 8352 states and 23187 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) [2022-01-18 01:19:00,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:00,657 INFO L93 Difference]: Finished difference Result 14479 states and 39838 transitions. [2022-01-18 01:19:00,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 01:19:00,657 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 [2022-01-18 01:19:00,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:00,678 INFO L225 Difference]: With dead ends: 14479 [2022-01-18 01:19:00,679 INFO L226 Difference]: Without dead ends: 14479 [2022-01-18 01:19:00,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=287, Invalid=903, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 01:19:00,679 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1268 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:00,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1268 Valid, 3032 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:19:00,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14479 states. [2022-01-18 01:19:00,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14479 to 9108. [2022-01-18 01:19:00,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9108 states, 9107 states have (on average 2.7769847370154825) internal successors, (25290), 9107 states have internal predecessors, (25290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:00,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9108 states to 9108 states and 25290 transitions. [2022-01-18 01:19:00,813 INFO L78 Accepts]: Start accepts. Automaton has 9108 states and 25290 transitions. Word has length 181 [2022-01-18 01:19:00,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:00,813 INFO L470 AbstractCegarLoop]: Abstraction has 9108 states and 25290 transitions. [2022-01-18 01:19:00,813 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) [2022-01-18 01:19:00,813 INFO L276 IsEmpty]: Start isEmpty. Operand 9108 states and 25290 transitions. [2022-01-18 01:19:00,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:00,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:00,823 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, 1, 1, 1, 1] [2022-01-18 01:19:00,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-01-18 01:19:00,824 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:00,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:00,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1693882528, now seen corresponding path program 1 times [2022-01-18 01:19:00,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:00,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512739299] [2022-01-18 01:19:00,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:00,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:00,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:00,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512739299] [2022-01-18 01:19:00,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512739299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:00,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:00,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:19:00,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063872379] [2022-01-18 01:19:00,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:00,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:19:00,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:00,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:19:00,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:19:00,893 INFO L87 Difference]: Start difference. First operand 9108 states and 25290 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) [2022-01-18 01:19:01,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:01,030 INFO L93 Difference]: Finished difference Result 11276 states and 31210 transitions. [2022-01-18 01:19:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 01:19:01,031 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 [2022-01-18 01:19:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:01,052 INFO L225 Difference]: With dead ends: 11276 [2022-01-18 01:19:01,053 INFO L226 Difference]: Without dead ends: 11219 [2022-01-18 01:19:01,053 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 [2022-01-18 01:19:01,053 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 215 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:01,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 1065 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:19:01,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11219 states. [2022-01-18 01:19:01,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11219 to 10392. [2022-01-18 01:19:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10392 states, 10391 states have (on average 2.7839476470022135) internal successors, (28928), 10391 states have internal predecessors, (28928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10392 states to 10392 states and 28928 transitions. [2022-01-18 01:19:01,213 INFO L78 Accepts]: Start accepts. Automaton has 10392 states and 28928 transitions. Word has length 181 [2022-01-18 01:19:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:01,213 INFO L470 AbstractCegarLoop]: Abstraction has 10392 states and 28928 transitions. [2022-01-18 01:19:01,213 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) [2022-01-18 01:19:01,213 INFO L276 IsEmpty]: Start isEmpty. Operand 10392 states and 28928 transitions. [2022-01-18 01:19:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:01,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:01,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:19:01,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-01-18 01:19:01,225 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:01,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:01,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1303549216, now seen corresponding path program 2 times [2022-01-18 01:19:01,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:01,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5740562] [2022-01-18 01:19:01,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:01,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:01,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:01,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5740562] [2022-01-18 01:19:01,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5740562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:01,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:01,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:19:01,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042537396] [2022-01-18 01:19:01,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:01,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:19:01,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:01,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:19:01,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:19:01,298 INFO L87 Difference]: Start difference. First operand 10392 states and 28928 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) [2022-01-18 01:19:01,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:01,429 INFO L93 Difference]: Finished difference Result 11187 states and 31022 transitions. [2022-01-18 01:19:01,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 01:19:01,429 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 [2022-01-18 01:19:01,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:01,445 INFO L225 Difference]: With dead ends: 11187 [2022-01-18 01:19:01,445 INFO L226 Difference]: Without dead ends: 11130 [2022-01-18 01:19:01,445 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 [2022-01-18 01:19:01,446 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 97 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:01,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1294 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:19:01,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11130 states. [2022-01-18 01:19:01,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11130 to 10431. [2022-01-18 01:19:01,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10431 states, 10430 states have (on average 2.7836049856184086) internal successors, (29033), 10430 states have internal predecessors, (29033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:01,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10431 states to 10431 states and 29033 transitions. [2022-01-18 01:19:01,566 INFO L78 Accepts]: Start accepts. Automaton has 10431 states and 29033 transitions. Word has length 181 [2022-01-18 01:19:01,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:01,566 INFO L470 AbstractCegarLoop]: Abstraction has 10431 states and 29033 transitions. [2022-01-18 01:19:01,566 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) [2022-01-18 01:19:01,566 INFO L276 IsEmpty]: Start isEmpty. Operand 10431 states and 29033 transitions. [2022-01-18 01:19:01,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:01,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:01,578 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, 1, 1, 1, 1] [2022-01-18 01:19:01,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-01-18 01:19:01,578 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:01,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:01,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1045782252, now seen corresponding path program 3 times [2022-01-18 01:19:01,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:01,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725706279] [2022-01-18 01:19:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:01,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:01,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:01,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725706279] [2022-01-18 01:19:01,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725706279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:01,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:01,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:19:01,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346456848] [2022-01-18 01:19:01,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:01,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:19:01,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:01,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:19:01,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:19:01,651 INFO L87 Difference]: Start difference. First operand 10431 states and 29033 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) [2022-01-18 01:19:01,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:01,762 INFO L93 Difference]: Finished difference Result 11198 states and 31059 transitions. [2022-01-18 01:19:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:19:01,762 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 [2022-01-18 01:19:01,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:01,778 INFO L225 Difference]: With dead ends: 11198 [2022-01-18 01:19:01,779 INFO L226 Difference]: Without dead ends: 11141 [2022-01-18 01:19:01,779 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 [2022-01-18 01:19:01,779 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 83 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:01,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 1298 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:19:01,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11141 states. [2022-01-18 01:19:01,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11141 to 10431. [2022-01-18 01:19:01,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10431 states, 10430 states have (on average 2.7836049856184086) internal successors, (29033), 10430 states have internal predecessors, (29033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:01,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10431 states to 10431 states and 29033 transitions. [2022-01-18 01:19:01,903 INFO L78 Accepts]: Start accepts. Automaton has 10431 states and 29033 transitions. Word has length 181 [2022-01-18 01:19:01,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:01,903 INFO L470 AbstractCegarLoop]: Abstraction has 10431 states and 29033 transitions. [2022-01-18 01:19:01,903 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) [2022-01-18 01:19:01,903 INFO L276 IsEmpty]: Start isEmpty. Operand 10431 states and 29033 transitions. [2022-01-18 01:19:01,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:01,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:01,915 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, 1, 1, 1, 1] [2022-01-18 01:19:01,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2022-01-18 01:19:01,916 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:01,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:01,916 INFO L85 PathProgramCache]: Analyzing trace with hash -964256132, now seen corresponding path program 4 times [2022-01-18 01:19:01,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:01,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439851229] [2022-01-18 01:19:01,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:01,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:01,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:01,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439851229] [2022-01-18 01:19:01,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439851229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:01,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:01,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:19:01,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138607791] [2022-01-18 01:19:01,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:01,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:19:01,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:01,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:19:01,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:19:01,983 INFO L87 Difference]: Start difference. First operand 10431 states and 29033 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) [2022-01-18 01:19:02,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:02,140 INFO L93 Difference]: Finished difference Result 12809 states and 35387 transitions. [2022-01-18 01:19:02,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 01:19:02,140 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 [2022-01-18 01:19:02,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:02,159 INFO L225 Difference]: With dead ends: 12809 [2022-01-18 01:19:02,159 INFO L226 Difference]: Without dead ends: 12752 [2022-01-18 01:19:02,159 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 [2022-01-18 01:19:02,159 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 214 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:02,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 1784 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:19:02,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12752 states. [2022-01-18 01:19:02,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12752 to 11670. [2022-01-18 01:19:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11670 states, 11669 states have (on average 2.7775302082440656) internal successors, (32411), 11669 states have internal predecessors, (32411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11670 states to 11670 states and 32411 transitions. [2022-01-18 01:19:02,305 INFO L78 Accepts]: Start accepts. Automaton has 11670 states and 32411 transitions. Word has length 181 [2022-01-18 01:19:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:02,305 INFO L470 AbstractCegarLoop]: Abstraction has 11670 states and 32411 transitions. [2022-01-18 01:19:02,305 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) [2022-01-18 01:19:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 11670 states and 32411 transitions. [2022-01-18 01:19:02,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:02,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:02,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:19:02,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2022-01-18 01:19:02,320 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:02,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:02,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1597101116, now seen corresponding path program 5 times [2022-01-18 01:19:02,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:02,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136555372] [2022-01-18 01:19:02,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:02,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:02,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:02,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136555372] [2022-01-18 01:19:02,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136555372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:02,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:02,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:19:02,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111889057] [2022-01-18 01:19:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:02,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:19:02,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:02,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:19:02,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:19:02,404 INFO L87 Difference]: Start difference. First operand 11670 states and 32411 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) [2022-01-18 01:19:02,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:02,522 INFO L93 Difference]: Finished difference Result 12489 states and 34589 transitions. [2022-01-18 01:19:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:19:02,522 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 [2022-01-18 01:19:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:02,541 INFO L225 Difference]: With dead ends: 12489 [2022-01-18 01:19:02,541 INFO L226 Difference]: Without dead ends: 12432 [2022-01-18 01:19:02,541 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 [2022-01-18 01:19:02,542 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 104 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:02,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1119 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:19:02,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12432 states. [2022-01-18 01:19:02,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12432 to 11674. [2022-01-18 01:19:02,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11674 states, 11673 states have (on average 2.7775207744367343) internal successors, (32422), 11673 states have internal predecessors, (32422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:02,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11674 states to 11674 states and 32422 transitions. [2022-01-18 01:19:02,686 INFO L78 Accepts]: Start accepts. Automaton has 11674 states and 32422 transitions. Word has length 181 [2022-01-18 01:19:02,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:02,686 INFO L470 AbstractCegarLoop]: Abstraction has 11674 states and 32422 transitions. [2022-01-18 01:19:02,686 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) [2022-01-18 01:19:02,686 INFO L276 IsEmpty]: Start isEmpty. Operand 11674 states and 32422 transitions. [2022-01-18 01:19:02,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:02,700 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:02,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:19:02,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2022-01-18 01:19:02,700 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:02,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:02,700 INFO L85 PathProgramCache]: Analyzing trace with hash 348534712, now seen corresponding path program 6 times [2022-01-18 01:19:02,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:02,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235284073] [2022-01-18 01:19:02,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:02,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:02,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:02,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:02,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235284073] [2022-01-18 01:19:02,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235284073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:02,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:02,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:19:02,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581172601] [2022-01-18 01:19:02,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:02,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:19:02,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:02,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:19:02,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:19:02,783 INFO L87 Difference]: Start difference. First operand 11674 states and 32422 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) [2022-01-18 01:19:02,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:02,953 INFO L93 Difference]: Finished difference Result 12429 states and 34433 transitions. [2022-01-18 01:19:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 01:19:02,953 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 [2022-01-18 01:19:02,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:02,971 INFO L225 Difference]: With dead ends: 12429 [2022-01-18 01:19:02,971 INFO L226 Difference]: Without dead ends: 12372 [2022-01-18 01:19:02,971 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 [2022-01-18 01:19:02,971 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 85 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:02,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1771 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:19:02,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12372 states. [2022-01-18 01:19:03,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12372 to 11670. [2022-01-18 01:19:03,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11670 states, 11669 states have (on average 2.7775302082440656) internal successors, (32411), 11669 states have internal predecessors, (32411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:03,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11670 states to 11670 states and 32411 transitions. [2022-01-18 01:19:03,108 INFO L78 Accepts]: Start accepts. Automaton has 11670 states and 32411 transitions. Word has length 181 [2022-01-18 01:19:03,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:03,108 INFO L470 AbstractCegarLoop]: Abstraction has 11670 states and 32411 transitions. [2022-01-18 01:19:03,108 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) [2022-01-18 01:19:03,108 INFO L276 IsEmpty]: Start isEmpty. Operand 11670 states and 32411 transitions. [2022-01-18 01:19:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:03,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:03,121 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, 1, 1, 1, 1] [2022-01-18 01:19:03,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-01-18 01:19:03,122 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:03,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:03,122 INFO L85 PathProgramCache]: Analyzing trace with hash -550249376, now seen corresponding path program 1 times [2022-01-18 01:19:03,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:03,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291916177] [2022-01-18 01:19:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:03,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:03,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:03,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291916177] [2022-01-18 01:19:03,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291916177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:03,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:03,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:19:03,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759273904] [2022-01-18 01:19:03,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:03,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:19:03,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:03,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:19:03,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:19:03,185 INFO L87 Difference]: Start difference. First operand 11670 states and 32411 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) [2022-01-18 01:19:03,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:03,345 INFO L93 Difference]: Finished difference Result 12788 states and 35346 transitions. [2022-01-18 01:19:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 01:19:03,345 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 [2022-01-18 01:19:03,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:03,364 INFO L225 Difference]: With dead ends: 12788 [2022-01-18 01:19:03,364 INFO L226 Difference]: Without dead ends: 12737 [2022-01-18 01:19:03,364 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 [2022-01-18 01:19:03,364 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 203 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:03,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1626 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:19:03,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12737 states. [2022-01-18 01:19:03,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12737 to 11706. [2022-01-18 01:19:03,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11706 states, 11705 states have (on average 2.777445536095686) internal successors, (32510), 11705 states have internal predecessors, (32510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11706 states to 11706 states and 32510 transitions. [2022-01-18 01:19:03,548 INFO L78 Accepts]: Start accepts. Automaton has 11706 states and 32510 transitions. Word has length 181 [2022-01-18 01:19:03,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:03,548 INFO L470 AbstractCegarLoop]: Abstraction has 11706 states and 32510 transitions. [2022-01-18 01:19:03,548 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) [2022-01-18 01:19:03,548 INFO L276 IsEmpty]: Start isEmpty. Operand 11706 states and 32510 transitions. [2022-01-18 01:19:03,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:03,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:03,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:19:03,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-01-18 01:19:03,562 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:03,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:03,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1708434304, now seen corresponding path program 1 times [2022-01-18 01:19:03,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:03,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134389223] [2022-01-18 01:19:03,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:03,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:19:04,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:04,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134389223] [2022-01-18 01:19:04,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134389223] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:19:04,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154002734] [2022-01-18 01:19:04,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:04,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:19:04,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:19:04,318 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) [2022-01-18 01:19:04,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 01:19:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:04,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 61 conjunts are in the unsatisfiable core [2022-01-18 01:19:04,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:19:04,686 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 [2022-01-18 01:19:04,787 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 [2022-01-18 01:19:05,004 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:19:05,004 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 [2022-01-18 01:19:05,100 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 [2022-01-18 01:19:05,272 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 [2022-01-18 01:19:05,368 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 [2022-01-18 01:19:06,003 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-01-18 01:19:06,004 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 [2022-01-18 01:19:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:19:06,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:19:06,843 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4893 (Array Int Int)) (~get2~0.base Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_4893))) (let ((.cse4 (select .cse7 c_~get1~0.base)) (.cse5 (select .cse7 ~get2~0.base)) (.cse6 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse1 (select .cse5 (+ c_~get2~0.offset .cse6))) (.cse0 (select .cse4 (+ c_~get1~0.offset .cse6))) (.cse2 (select .cse5 c_~get2~0.offset)) (.cse3 (select .cse4 c_~get1~0.offset))) (or (<= (+ .cse0 1) .cse1) (= .cse2 .cse3) (= .cse1 .cse0) (< .cse2 .cse3)))))) is different from false [2022-01-18 01:19:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:06,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154002734] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 01:19:06,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 01:19:06,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [28, 30] total 66 [2022-01-18 01:19:06,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655302082] [2022-01-18 01:19:06,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:06,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 01:19:06,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:06,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 01:19:06,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=3848, Unknown=1, NotChecked=126, Total=4290 [2022-01-18 01:19:06,977 INFO L87 Difference]: Start difference. First operand 11706 states and 32510 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) [2022-01-18 01:19:08,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:08,384 INFO L93 Difference]: Finished difference Result 15279 states and 42180 transitions. [2022-01-18 01:19:08,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 01:19:08,385 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 [2022-01-18 01:19:08,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:08,408 INFO L225 Difference]: With dead ends: 15279 [2022-01-18 01:19:08,408 INFO L226 Difference]: Without dead ends: 15279 [2022-01-18 01:19:08,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 322 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=461, Invalid=5242, Unknown=1, NotChecked=148, Total=5852 [2022-01-18 01:19:08,409 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 387 mSDsluCounter, 3909 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 4259 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 579 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:08,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 4259 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 825 Invalid, 0 Unknown, 579 Unchecked, 0.4s Time] [2022-01-18 01:19:08,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15279 states. [2022-01-18 01:19:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15279 to 12206. [2022-01-18 01:19:08,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12206 states, 12205 states have (on average 2.7741089717328964) internal successors, (33858), 12205 states have internal predecessors, (33858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:08,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12206 states to 12206 states and 33858 transitions. [2022-01-18 01:19:08,575 INFO L78 Accepts]: Start accepts. Automaton has 12206 states and 33858 transitions. Word has length 181 [2022-01-18 01:19:08,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:08,575 INFO L470 AbstractCegarLoop]: Abstraction has 12206 states and 33858 transitions. [2022-01-18 01:19:08,575 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) [2022-01-18 01:19:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 12206 states and 33858 transitions. [2022-01-18 01:19:08,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:08,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:08,589 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, 1, 1, 1, 1] [2022-01-18 01:19:08,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-18 01:19:08,789 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,SelfDestructingSolverStorable258 [2022-01-18 01:19:08,790 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:08,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:08,790 INFO L85 PathProgramCache]: Analyzing trace with hash -287180576, now seen corresponding path program 2 times [2022-01-18 01:19:08,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:08,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094667831] [2022-01-18 01:19:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:08,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:08,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:08,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094667831] [2022-01-18 01:19:08,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094667831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:08,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:08,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:19:08,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402462889] [2022-01-18 01:19:08,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:08,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:19:08,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:08,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:19:08,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:19:08,878 INFO L87 Difference]: Start difference. First operand 12206 states and 33858 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) [2022-01-18 01:19:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:08,993 INFO L93 Difference]: Finished difference Result 13096 states and 36217 transitions. [2022-01-18 01:19:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 01:19:08,994 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 [2022-01-18 01:19:08,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:09,013 INFO L225 Difference]: With dead ends: 13096 [2022-01-18 01:19:09,013 INFO L226 Difference]: Without dead ends: 13045 [2022-01-18 01:19:09,013 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 [2022-01-18 01:19:09,013 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 97 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:09,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1092 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:19:09,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13045 states. [2022-01-18 01:19:09,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13045 to 12210. [2022-01-18 01:19:09,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12210 states, 12209 states have (on average 2.77410107297895) internal successors, (33869), 12209 states have internal predecessors, (33869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:09,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12210 states to 12210 states and 33869 transitions. [2022-01-18 01:19:09,164 INFO L78 Accepts]: Start accepts. Automaton has 12210 states and 33869 transitions. Word has length 181 [2022-01-18 01:19:09,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:09,164 INFO L470 AbstractCegarLoop]: Abstraction has 12210 states and 33869 transitions. [2022-01-18 01:19:09,164 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) [2022-01-18 01:19:09,164 INFO L276 IsEmpty]: Start isEmpty. Operand 12210 states and 33869 transitions. [2022-01-18 01:19:09,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:09,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:09,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:19:09,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-01-18 01:19:09,178 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:09,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:09,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1658455252, now seen corresponding path program 3 times [2022-01-18 01:19:09,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:09,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360394002] [2022-01-18 01:19:09,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:09,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:09,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:09,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360394002] [2022-01-18 01:19:09,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360394002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:09,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:09,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:19:09,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13804947] [2022-01-18 01:19:09,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:09,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:19:09,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:09,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:19:09,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:19:09,246 INFO L87 Difference]: Start difference. First operand 12210 states and 33869 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) [2022-01-18 01:19:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:09,372 INFO L93 Difference]: Finished difference Result 13107 states and 36254 transitions. [2022-01-18 01:19:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:19:09,373 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 [2022-01-18 01:19:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:09,392 INFO L225 Difference]: With dead ends: 13107 [2022-01-18 01:19:09,392 INFO L226 Difference]: Without dead ends: 13056 [2022-01-18 01:19:09,392 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 [2022-01-18 01:19:09,392 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 86 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:09,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 1321 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:19:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13056 states. [2022-01-18 01:19:09,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13056 to 12206. [2022-01-18 01:19:09,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12206 states, 12205 states have (on average 2.7741089717328964) internal successors, (33858), 12205 states have internal predecessors, (33858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12206 states to 12206 states and 33858 transitions. [2022-01-18 01:19:09,536 INFO L78 Accepts]: Start accepts. Automaton has 12206 states and 33858 transitions. Word has length 181 [2022-01-18 01:19:09,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:09,536 INFO L470 AbstractCegarLoop]: Abstraction has 12206 states and 33858 transitions. [2022-01-18 01:19:09,536 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) [2022-01-18 01:19:09,536 INFO L276 IsEmpty]: Start isEmpty. Operand 12206 states and 33858 transitions. [2022-01-18 01:19:09,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:09,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:09,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:19:09,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-01-18 01:19:09,551 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:09,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:09,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1851109188, now seen corresponding path program 4 times [2022-01-18 01:19:09,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:09,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042185656] [2022-01-18 01:19:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:09,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:09,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:09,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042185656] [2022-01-18 01:19:09,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042185656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:09,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:09,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:19:09,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606010046] [2022-01-18 01:19:09,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:09,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:19:09,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:09,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:19:09,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:19:09,614 INFO L87 Difference]: Start difference. First operand 12206 states and 33858 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) [2022-01-18 01:19:09,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:09,750 INFO L93 Difference]: Finished difference Result 13618 states and 37592 transitions. [2022-01-18 01:19:09,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 01:19:09,751 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 [2022-01-18 01:19:09,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:09,770 INFO L225 Difference]: With dead ends: 13618 [2022-01-18 01:19:09,770 INFO L226 Difference]: Without dead ends: 13567 [2022-01-18 01:19:09,770 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 [2022-01-18 01:19:09,771 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 208 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:09,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 1490 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:19:09,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13567 states. [2022-01-18 01:19:09,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13567 to 12245. [2022-01-18 01:19:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12245 states, 12244 states have (on average 2.7738484155504737) internal successors, (33963), 12244 states have internal predecessors, (33963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12245 states to 12245 states and 33963 transitions. [2022-01-18 01:19:09,924 INFO L78 Accepts]: Start accepts. Automaton has 12245 states and 33963 transitions. Word has length 181 [2022-01-18 01:19:09,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:09,924 INFO L470 AbstractCegarLoop]: Abstraction has 12245 states and 33963 transitions. [2022-01-18 01:19:09,924 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) [2022-01-18 01:19:09,924 INFO L276 IsEmpty]: Start isEmpty. Operand 12245 states and 33963 transitions. [2022-01-18 01:19:09,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:09,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:09,938 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, 1, 1, 1, 1] [2022-01-18 01:19:09,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-01-18 01:19:09,938 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:09,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:09,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2074947418, now seen corresponding path program 5 times [2022-01-18 01:19:09,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:09,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493216088] [2022-01-18 01:19:09,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:09,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:10,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:10,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:10,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493216088] [2022-01-18 01:19:10,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493216088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:10,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:10,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:19:10,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215351901] [2022-01-18 01:19:10,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:10,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:19:10,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:10,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:19:10,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:19:10,015 INFO L87 Difference]: Start difference. First operand 12245 states and 33963 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) [2022-01-18 01:19:10,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:10,177 INFO L93 Difference]: Finished difference Result 13186 states and 36487 transitions. [2022-01-18 01:19:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 01:19:10,178 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 [2022-01-18 01:19:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:10,201 INFO L225 Difference]: With dead ends: 13186 [2022-01-18 01:19:10,201 INFO L226 Difference]: Without dead ends: 13135 [2022-01-18 01:19:10,201 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 [2022-01-18 01:19:10,201 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 104 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:10,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1332 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:19:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13135 states. [2022-01-18 01:19:10,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13135 to 12249. [2022-01-18 01:19:10,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12249 states, 12248 states have (on average 2.7738406270411495) internal successors, (33974), 12248 states have internal predecessors, (33974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:10,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12249 states to 12249 states and 33974 transitions. [2022-01-18 01:19:10,346 INFO L78 Accepts]: Start accepts. Automaton has 12249 states and 33974 transitions. Word has length 181 [2022-01-18 01:19:10,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:10,346 INFO L470 AbstractCegarLoop]: Abstraction has 12249 states and 33974 transitions. [2022-01-18 01:19:10,346 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) [2022-01-18 01:19:10,346 INFO L276 IsEmpty]: Start isEmpty. Operand 12249 states and 33974 transitions. [2022-01-18 01:19:10,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:10,360 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:10,360 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:19:10,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-01-18 01:19:10,360 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:10,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:10,361 INFO L85 PathProgramCache]: Analyzing trace with hash -129311590, now seen corresponding path program 6 times [2022-01-18 01:19:10,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:10,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716759675] [2022-01-18 01:19:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:10,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:10,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:10,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716759675] [2022-01-18 01:19:10,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716759675] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:10,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:10,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 01:19:10,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983460545] [2022-01-18 01:19:10,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:10,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 01:19:10,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 01:19:10,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:19:10,435 INFO L87 Difference]: Start difference. First operand 12249 states and 33974 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) [2022-01-18 01:19:10,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:10,565 INFO L93 Difference]: Finished difference Result 13126 states and 36331 transitions. [2022-01-18 01:19:10,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 01:19:10,565 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 [2022-01-18 01:19:10,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:10,584 INFO L225 Difference]: With dead ends: 13126 [2022-01-18 01:19:10,585 INFO L226 Difference]: Without dead ends: 13075 [2022-01-18 01:19:10,585 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 [2022-01-18 01:19:10,585 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 85 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:10,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1352 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:19:10,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13075 states. [2022-01-18 01:19:10,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13075 to 12245. [2022-01-18 01:19:10,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12245 states, 12244 states have (on average 2.7738484155504737) internal successors, (33963), 12244 states have internal predecessors, (33963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:10,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12245 states to 12245 states and 33963 transitions. [2022-01-18 01:19:10,730 INFO L78 Accepts]: Start accepts. Automaton has 12245 states and 33963 transitions. Word has length 181 [2022-01-18 01:19:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:10,730 INFO L470 AbstractCegarLoop]: Abstraction has 12245 states and 33963 transitions. [2022-01-18 01:19:10,730 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) [2022-01-18 01:19:10,730 INFO L276 IsEmpty]: Start isEmpty. Operand 12245 states and 33963 transitions. [2022-01-18 01:19:10,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:10,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:10,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:19:10,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-01-18 01:19:10,747 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:10,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:10,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1830773360, now seen corresponding path program 2 times [2022-01-18 01:19:10,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:10,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360773610] [2022-01-18 01:19:10,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:10,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:19:11,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:11,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360773610] [2022-01-18 01:19:11,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360773610] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:19:11,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055504968] [2022-01-18 01:19:11,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:19:11,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:19:11,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:19:11,341 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) [2022-01-18 01:19:11,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 01:19:11,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-18 01:19:11,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:19:11,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 01:19:11,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:19:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:12,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 01:19:12,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055504968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:12,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 01:19:12,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [28] total 47 [2022-01-18 01:19:12,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773666556] [2022-01-18 01:19:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:12,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 01:19:12,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:12,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 01:19:12,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1970, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 01:19:12,677 INFO L87 Difference]: Start difference. First operand 12245 states and 33963 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) [2022-01-18 01:19:13,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:13,868 INFO L93 Difference]: Finished difference Result 20076 states and 55270 transitions. [2022-01-18 01:19:13,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 01:19:13,869 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 [2022-01-18 01:19:13,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:13,900 INFO L225 Difference]: With dead ends: 20076 [2022-01-18 01:19:13,900 INFO L226 Difference]: Without dead ends: 20076 [2022-01-18 01:19:13,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=620, Invalid=4492, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 01:19:13,900 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 1507 mSDsluCounter, 4051 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 362 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:13,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 4390 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 933 Invalid, 0 Unknown, 362 Unchecked, 0.4s Time] [2022-01-18 01:19:13,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20076 states. [2022-01-18 01:19:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20076 to 12588. [2022-01-18 01:19:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12588 states, 12587 states have (on average 2.7773099229363627) internal successors, (34958), 12587 states have internal predecessors, (34958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12588 states to 12588 states and 34958 transitions. [2022-01-18 01:19:14,108 INFO L78 Accepts]: Start accepts. Automaton has 12588 states and 34958 transitions. Word has length 181 [2022-01-18 01:19:14,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:14,108 INFO L470 AbstractCegarLoop]: Abstraction has 12588 states and 34958 transitions. [2022-01-18 01:19:14,109 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) [2022-01-18 01:19:14,109 INFO L276 IsEmpty]: Start isEmpty. Operand 12588 states and 34958 transitions. [2022-01-18 01:19:14,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:14,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:14,125 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, 1, 1, 1, 1] [2022-01-18 01:19:14,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 01:19:14,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:19:14,325 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:14,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:14,326 INFO L85 PathProgramCache]: Analyzing trace with hash -909661620, now seen corresponding path program 2 times [2022-01-18 01:19:14,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:14,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609927280] [2022-01-18 01:19:14,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:14,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:14,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:14,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609927280] [2022-01-18 01:19:14,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609927280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:14,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:14,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 01:19:14,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364746480] [2022-01-18 01:19:14,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:14,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 01:19:14,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:14,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 01:19:14,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-01-18 01:19:14,574 INFO L87 Difference]: Start difference. First operand 12588 states and 34958 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) [2022-01-18 01:19:15,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:15,100 INFO L93 Difference]: Finished difference Result 19224 states and 53264 transitions. [2022-01-18 01:19:15,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 01:19:15,101 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 [2022-01-18 01:19:15,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:15,130 INFO L225 Difference]: With dead ends: 19224 [2022-01-18 01:19:15,130 INFO L226 Difference]: Without dead ends: 19224 [2022-01-18 01:19:15,130 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 [2022-01-18 01:19:15,130 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 1070 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:15,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1070 Valid, 2790 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 01:19:15,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19224 states. [2022-01-18 01:19:15,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19224 to 12592. [2022-01-18 01:19:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12592 states, 12591 states have (on average 2.77761893415932) internal successors, (34973), 12591 states have internal predecessors, (34973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:15,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12592 states to 12592 states and 34973 transitions. [2022-01-18 01:19:15,327 INFO L78 Accepts]: Start accepts. Automaton has 12592 states and 34973 transitions. Word has length 181 [2022-01-18 01:19:15,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:15,328 INFO L470 AbstractCegarLoop]: Abstraction has 12592 states and 34973 transitions. [2022-01-18 01:19:15,328 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) [2022-01-18 01:19:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 12592 states and 34973 transitions. [2022-01-18 01:19:15,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:15,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:15,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:19:15,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-01-18 01:19:15,344 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:15,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:15,344 INFO L85 PathProgramCache]: Analyzing trace with hash 185790988, now seen corresponding path program 3 times [2022-01-18 01:19:15,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:15,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482389675] [2022-01-18 01:19:15,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:15,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:19:16,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:16,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482389675] [2022-01-18 01:19:16,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482389675] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:19:16,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255425779] [2022-01-18 01:19:16,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:19:16,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:19:16,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:19:16,285 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) [2022-01-18 01:19:16,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 01:19:16,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-18 01:19:16,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:19:16,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-18 01:19:16,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:19:17,483 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:19:17,483 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 [2022-01-18 01:19:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:17,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 01:19:17,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255425779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:17,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 01:19:17,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [30] total 48 [2022-01-18 01:19:17,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555616353] [2022-01-18 01:19:17,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:17,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 01:19:17,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:17,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 01:19:17,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=2044, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 01:19:17,525 INFO L87 Difference]: Start difference. First operand 12592 states and 34973 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) [2022-01-18 01:19:18,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:18,936 INFO L93 Difference]: Finished difference Result 19804 states and 54858 transitions. [2022-01-18 01:19:18,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 01:19:18,936 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 [2022-01-18 01:19:18,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:18,966 INFO L225 Difference]: With dead ends: 19804 [2022-01-18 01:19:18,966 INFO L226 Difference]: Without dead ends: 19804 [2022-01-18 01:19:18,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=712, Invalid=4988, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 01:19:18,967 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 1734 mSDsluCounter, 5009 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1734 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 275 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:18,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1734 Valid, 5320 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1341 Invalid, 0 Unknown, 275 Unchecked, 0.6s Time] [2022-01-18 01:19:18,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19804 states. [2022-01-18 01:19:19,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19804 to 12593. [2022-01-18 01:19:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12593 states, 12592 states have (on average 2.7776365946632784) internal successors, (34976), 12592 states have internal predecessors, (34976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:19,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12593 states to 12593 states and 34976 transitions. [2022-01-18 01:19:19,170 INFO L78 Accepts]: Start accepts. Automaton has 12593 states and 34976 transitions. Word has length 181 [2022-01-18 01:19:19,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:19,170 INFO L470 AbstractCegarLoop]: Abstraction has 12593 states and 34976 transitions. [2022-01-18 01:19:19,170 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) [2022-01-18 01:19:19,170 INFO L276 IsEmpty]: Start isEmpty. Operand 12593 states and 34976 transitions. [2022-01-18 01:19:19,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:19,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:19,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:19:19,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-01-18 01:19:19,386 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,SelfDestructingSolverStorable266 [2022-01-18 01:19:19,387 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:19,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:19,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1218567710, now seen corresponding path program 3 times [2022-01-18 01:19:19,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:19,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235404654] [2022-01-18 01:19:19,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:19,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:19,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:19,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235404654] [2022-01-18 01:19:19,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235404654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:19,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:19,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 01:19:19,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096952877] [2022-01-18 01:19:19,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:19,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 01:19:19,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:19,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 01:19:19,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-01-18 01:19:19,651 INFO L87 Difference]: Start difference. First operand 12593 states and 34976 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) [2022-01-18 01:19:20,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:20,228 INFO L93 Difference]: Finished difference Result 18952 states and 52451 transitions. [2022-01-18 01:19:20,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 01:19:20,229 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 [2022-01-18 01:19:20,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:20,257 INFO L225 Difference]: With dead ends: 18952 [2022-01-18 01:19:20,258 INFO L226 Difference]: Without dead ends: 18952 [2022-01-18 01:19:20,258 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 [2022-01-18 01:19:20,258 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 1057 mSDsluCounter, 2760 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 2996 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:20,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1057 Valid, 2996 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:19:20,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18952 states. [2022-01-18 01:19:20,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18952 to 12640. [2022-01-18 01:19:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12640 states, 12639 states have (on average 2.7779887649339345) internal successors, (35111), 12639 states have internal predecessors, (35111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12640 states to 12640 states and 35111 transitions. [2022-01-18 01:19:20,454 INFO L78 Accepts]: Start accepts. Automaton has 12640 states and 35111 transitions. Word has length 181 [2022-01-18 01:19:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:20,455 INFO L470 AbstractCegarLoop]: Abstraction has 12640 states and 35111 transitions. [2022-01-18 01:19:20,455 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) [2022-01-18 01:19:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 12640 states and 35111 transitions. [2022-01-18 01:19:20,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:20,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:20,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:19:20,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-01-18 01:19:20,470 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:20,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:20,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2143595328, now seen corresponding path program 4 times [2022-01-18 01:19:20,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:20,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237378593] [2022-01-18 01:19:20,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:20,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:21,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:19:21,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:21,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237378593] [2022-01-18 01:19:21,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237378593] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:19:21,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317419157] [2022-01-18 01:19:21,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:19:21,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:19:21,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:19:21,205 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) [2022-01-18 01:19:21,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 01:19:21,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:19:21,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:19:21,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 01:19:21,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:19:21,985 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 [2022-01-18 01:19:22,136 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 [2022-01-18 01:19:22,244 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 [2022-01-18 01:19:22,830 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-01-18 01:19:22,830 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 [2022-01-18 01:19:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:19:22,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:19:23,689 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_5105 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5105))) (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 [2022-01-18 01:19:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:23,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317419157] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 01:19:23,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 01:19:23,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [28, 29] total 66 [2022-01-18 01:19:23,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7803275] [2022-01-18 01:19:23,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:23,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 01:19:23,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:23,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 01:19:23,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=3873, Unknown=1, NotChecked=126, Total=4290 [2022-01-18 01:19:23,821 INFO L87 Difference]: Start difference. First operand 12640 states and 35111 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) [2022-01-18 01:19:33,199 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((~get1~0.base Int)) (let ((.cse5 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse6 (select |c_#memory_int| ~get1~0.base)) (.cse4 (select |c_#memory_int| c_~get2~0.base)) (.cse7 (* c_thread2Thread1of1ForFork1_~i~1 4))) (let ((.cse2 (select .cse4 (+ c_~get2~0.offset .cse7))) (.cse3 (select .cse6 (+ .cse7 c_~get1~0.offset))) (.cse0 (select .cse6 (+ c_~get1~0.offset .cse5))) (.cse1 (select .cse4 (+ c_~get2~0.offset .cse5)))) (or (= .cse0 .cse1) (<= (+ .cse2 1) .cse3) (= .cse2 .cse3) (< .cse0 .cse1))))) (let ((.cse12 (select |c_#memory_int| c_~get1~0.base)) (.cse10 (select |c_#memory_int| c_~get2~0.base)) (.cse13 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse9 (select .cse10 (+ c_~get2~0.offset .cse13))) (.cse8 (select .cse12 (+ c_~get1~0.offset .cse13)))) (or (< .cse8 .cse9) (= |c_thread2Thread1of1ForFork1_#t~mem9| |c_thread2Thread1of1ForFork1_#t~mem10|) (= .cse9 .cse8) (let ((.cse11 (* c_thread2Thread1of1ForFork1_~i~1 4))) (<= (+ (select .cse10 (+ c_~get2~0.offset .cse11)) 1) (select .cse12 (+ .cse11 c_~get1~0.offset)))))))) is different from false [2022-01-18 01:19:36,273 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((~get1~0.base Int) (v_ArrVal_5105 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5105))) (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 [2022-01-18 01:19:48,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:48,182 INFO L93 Difference]: Finished difference Result 17732 states and 48918 transitions. [2022-01-18 01:19:48,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 01:19:48,183 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 [2022-01-18 01:19:48,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:48,210 INFO L225 Difference]: With dead ends: 17732 [2022-01-18 01:19:48,211 INFO L226 Difference]: Without dead ends: 17732 [2022-01-18 01:19:48,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 323 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1660 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=466, Invalid=5833, Unknown=33, NotChecked=474, Total=6806 [2022-01-18 01:19:48,212 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 417 mSDsluCounter, 4005 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 4381 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1393 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:48,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 4381 Invalid, 2180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 779 Invalid, 0 Unknown, 1393 Unchecked, 0.4s Time] [2022-01-18 01:19:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17732 states. [2022-01-18 01:19:48,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17732 to 12737. [2022-01-18 01:19:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12737 states, 12736 states have (on average 2.779444095477387) internal successors, (35399), 12736 states have internal predecessors, (35399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12737 states to 12737 states and 35399 transitions. [2022-01-18 01:19:48,409 INFO L78 Accepts]: Start accepts. Automaton has 12737 states and 35399 transitions. Word has length 181 [2022-01-18 01:19:48,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:48,409 INFO L470 AbstractCegarLoop]: Abstraction has 12737 states and 35399 transitions. [2022-01-18 01:19:48,409 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) [2022-01-18 01:19:48,409 INFO L276 IsEmpty]: Start isEmpty. Operand 12737 states and 35399 transitions. [2022-01-18 01:19:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:48,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:48,426 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, 1, 1, 1, 1] [2022-01-18 01:19:48,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-01-18 01:19:48,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:19:48,626 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:48,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:48,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1767032008, now seen corresponding path program 4 times [2022-01-18 01:19:48,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:48,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576809654] [2022-01-18 01:19:48,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:48,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:48,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:48,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576809654] [2022-01-18 01:19:48,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576809654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:48,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:19:48,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 01:19:48,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188540750] [2022-01-18 01:19:48,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:48,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 01:19:48,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:48,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 01:19:48,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-01-18 01:19:48,876 INFO L87 Difference]: Start difference. First operand 12737 states and 35399 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) [2022-01-18 01:19:49,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:49,409 INFO L93 Difference]: Finished difference Result 18947 states and 52469 transitions. [2022-01-18 01:19:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 01:19:49,409 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 [2022-01-18 01:19:49,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:49,438 INFO L225 Difference]: With dead ends: 18947 [2022-01-18 01:19:49,438 INFO L226 Difference]: Without dead ends: 18947 [2022-01-18 01:19:49,438 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 [2022-01-18 01:19:49,439 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 1249 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 3009 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:49,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 3009 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:19:49,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18947 states. [2022-01-18 01:19:49,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18947 to 12737. [2022-01-18 01:19:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12737 states, 12736 states have (on average 2.779444095477387) internal successors, (35399), 12736 states have internal predecessors, (35399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:49,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12737 states to 12737 states and 35399 transitions. [2022-01-18 01:19:49,640 INFO L78 Accepts]: Start accepts. Automaton has 12737 states and 35399 transitions. Word has length 181 [2022-01-18 01:19:49,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:49,640 INFO L470 AbstractCegarLoop]: Abstraction has 12737 states and 35399 transitions. [2022-01-18 01:19:49,641 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) [2022-01-18 01:19:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 12737 states and 35399 transitions. [2022-01-18 01:19:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:49,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:49,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:19:49,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-01-18 01:19:49,657 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:49,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:49,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1166049066, now seen corresponding path program 5 times [2022-01-18 01:19:49,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:49,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829458820] [2022-01-18 01:19:49,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:49,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:19:50,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:50,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829458820] [2022-01-18 01:19:50,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829458820] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:19:50,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135365434] [2022-01-18 01:19:50,325 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:19:50,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:19:50,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:19:50,326 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) [2022-01-18 01:19:50,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 01:19:50,574 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:19:50,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:19:50,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 80 conjunts are in the unsatisfiable core [2022-01-18 01:19:50,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:19:50,605 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 [2022-01-18 01:19:50,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:19:50,785 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 [2022-01-18 01:19:50,944 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 [2022-01-18 01:19:51,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:19:51,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 01:19:51,349 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:19:51,349 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 [2022-01-18 01:19:51,538 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 [2022-01-18 01:19:51,809 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 [2022-01-18 01:19:51,975 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 [2022-01-18 01:19:52,569 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:19:52,569 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 [2022-01-18 01:19:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:19:52,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:19:53,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:53,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135365434] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 01:19:53,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 01:19:53,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [28, 30] total 66 [2022-01-18 01:19:53,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719053707] [2022-01-18 01:19:53,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:53,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 01:19:53,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 01:19:53,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=3940, Unknown=20, NotChecked=0, Total=4290 [2022-01-18 01:19:53,599 INFO L87 Difference]: Start difference. First operand 12737 states and 35399 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) [2022-01-18 01:19:53,653 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse4 (select |c_#memory_int| c_~get1~0.base)) (.cse5 (select |c_#memory_int| c_~get2~0.base)) (.cse6 (* c_thread1Thread1of1ForFork0_~i~0 4))) (let ((.cse3 (select .cse5 (+ c_~get2~0.offset .cse6))) (.cse2 (select .cse4 (+ c_~get1~0.offset .cse6))) (.cse0 (select .cse5 c_~get2~0.offset)) (.cse1 (select .cse4 c_~get1~0.offset))) (or (= .cse0 .cse1) (<= (+ .cse2 1) .cse3) (= .cse3 .cse2) (< .cse0 .cse1)))) (forall ((v_ArrVal_5161 (Array Int Int))) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5161))) (let ((.cse12 (* c_thread1Thread1of1ForFork0_~i~0 4)) (.cse11 (select .cse14 c_~get2~0.base)) (.cse13 (select .cse14 c_~get1~0.base))) (let ((.cse8 (select .cse13 c_~get1~0.offset)) (.cse7 (select .cse11 c_~get2~0.offset)) (.cse10 (select .cse13 (+ c_~get1~0.offset .cse12))) (.cse9 (select .cse11 (+ c_~get2~0.offset .cse12)))) (or (< .cse7 .cse8) (= .cse8 .cse7) (= .cse9 .cse10) (<= (+ .cse10 1) .cse9))))))) is different from false [2022-01-18 01:19:55,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:55,352 INFO L93 Difference]: Finished difference Result 18172 states and 50149 transitions. [2022-01-18 01:19:55,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 01:19:55,352 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 [2022-01-18 01:19:55,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:55,381 INFO L225 Difference]: With dead ends: 18172 [2022-01-18 01:19:55,381 INFO L226 Difference]: Without dead ends: 18172 [2022-01-18 01:19:55,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 324 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2567 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=757, Invalid=7763, Unknown=40, NotChecked=182, Total=8742 [2022-01-18 01:19:55,383 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 985 mSDsluCounter, 4359 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 4730 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 879 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:55,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 4730 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1211 Invalid, 0 Unknown, 879 Unchecked, 0.6s Time] [2022-01-18 01:19:55,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18172 states. [2022-01-18 01:19:55,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18172 to 12819. [2022-01-18 01:19:55,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12819 states, 12818 states have (on average 2.78210329224528) internal successors, (35661), 12818 states have internal predecessors, (35661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:55,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12819 states to 12819 states and 35661 transitions. [2022-01-18 01:19:55,586 INFO L78 Accepts]: Start accepts. Automaton has 12819 states and 35661 transitions. Word has length 181 [2022-01-18 01:19:55,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:55,586 INFO L470 AbstractCegarLoop]: Abstraction has 12819 states and 35661 transitions. [2022-01-18 01:19:55,586 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) [2022-01-18 01:19:55,586 INFO L276 IsEmpty]: Start isEmpty. Operand 12819 states and 35661 transitions. [2022-01-18 01:19:55,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:55,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:55,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:19:55,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 01:19:55,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:19:55,803 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:55,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:55,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1932642920, now seen corresponding path program 6 times [2022-01-18 01:19:55,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:55,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036421091] [2022-01-18 01:19:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:55,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:19:56,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:19:56,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:19:56,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036421091] [2022-01-18 01:19:56,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036421091] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:19:56,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575279125] [2022-01-18 01:19:56,426 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:19:56,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:19:56,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:19:56,427 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) [2022-01-18 01:19:56,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 01:19:56,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-01-18 01:19:56,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:19:56,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-18 01:19:56,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:19:57,535 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:19:57,536 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 [2022-01-18 01:19:57,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:19:57,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 01:19:57,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575279125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:19:57,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 01:19:57,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [28] total 47 [2022-01-18 01:19:57,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263816506] [2022-01-18 01:19:57,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:19:57,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 01:19:57,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:19:57,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 01:19:57,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 01:19:57,644 INFO L87 Difference]: Start difference. First operand 12819 states and 35661 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) [2022-01-18 01:19:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:19:59,262 INFO L93 Difference]: Finished difference Result 20507 states and 56650 transitions. [2022-01-18 01:19:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 01:19:59,262 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 [2022-01-18 01:19:59,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:19:59,293 INFO L225 Difference]: With dead ends: 20507 [2022-01-18 01:19:59,293 INFO L226 Difference]: Without dead ends: 20507 [2022-01-18 01:19:59,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1192 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=736, Invalid=5116, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 01:19:59,294 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 1681 mSDsluCounter, 3908 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 4245 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:19:59,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1681 Valid, 4245 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1204 Invalid, 0 Unknown, 126 Unchecked, 0.5s Time] [2022-01-18 01:19:59,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20507 states. [2022-01-18 01:19:59,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20507 to 12805. [2022-01-18 01:19:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12805 states, 12804 states have (on average 2.781786941580756) internal successors, (35618), 12804 states have internal predecessors, (35618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:19:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12805 states to 12805 states and 35618 transitions. [2022-01-18 01:19:59,503 INFO L78 Accepts]: Start accepts. Automaton has 12805 states and 35618 transitions. Word has length 181 [2022-01-18 01:19:59,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:19:59,503 INFO L470 AbstractCegarLoop]: Abstraction has 12805 states and 35618 transitions. [2022-01-18 01:19:59,503 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) [2022-01-18 01:19:59,503 INFO L276 IsEmpty]: Start isEmpty. Operand 12805 states and 35618 transitions. [2022-01-18 01:19:59,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:19:59,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:19:59,519 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, 1, 1, 1, 1] [2022-01-18 01:19:59,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-01-18 01:19:59,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:19:59,720 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:19:59,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:19:59,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1377001474, now seen corresponding path program 7 times [2022-01-18 01:19:59,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:19:59,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641921813] [2022-01-18 01:19:59,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:19:59,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:19:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:20:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:20:00,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:20:00,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641921813] [2022-01-18 01:20:00,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641921813] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:20:00,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073302043] [2022-01-18 01:20:00,520 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:20:00,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:20:00,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:20:00,521 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) [2022-01-18 01:20:00,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 01:20:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:20:00,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 61 conjunts are in the unsatisfiable core [2022-01-18 01:20:00,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:20:00,901 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 [2022-01-18 01:20:01,002 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 [2022-01-18 01:20:01,218 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:20:01,219 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 [2022-01-18 01:20:01,315 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 [2022-01-18 01:20:01,492 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 [2022-01-18 01:20:01,588 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 [2022-01-18 01:20:02,155 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-01-18 01:20:02,156 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 [2022-01-18 01:20:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:20:02,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:20:03,684 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5231 (Array Int Int)) (~get2~0.base Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5231))) (let ((.cse5 (select .cse7 ~get2~0.base)) (.cse4 (select .cse7 c_~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))) (.cse0 (select .cse5 c_~get2~0.offset)) (.cse1 (select .cse4 c_~get1~0.offset))) (or (< .cse0 .cse1) (<= (+ .cse2 1) .cse3) (= .cse2 .cse3) (= .cse0 .cse1)))))) is different from false [2022-01-18 01:20:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:20:03,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073302043] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 01:20:03,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 01:20:03,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [30, 30] total 69 [2022-01-18 01:20:03,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486656839] [2022-01-18 01:20:03,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:20:03,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 01:20:03,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:20:03,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 01:20:03,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=4242, Unknown=2, NotChecked=132, Total=4692 [2022-01-18 01:20:03,824 INFO L87 Difference]: Start difference. First operand 12805 states and 35618 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) [2022-01-18 01:20:04,297 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_5231 (Array Int Int)) (~get2~0.base Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5231))) (let ((.cse5 (select .cse7 ~get2~0.base)) (.cse4 (select .cse7 c_~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))) (.cse0 (select .cse5 c_~get2~0.offset)) (.cse1 (select .cse4 c_~get1~0.offset))) (or (< .cse0 .cse1) (<= (+ .cse2 1) .cse3) (= .cse2 .cse3) (= .cse0 .cse1)))))) (or (< |c_thread2Thread1of1ForFork1_#t~mem11| |c_thread2Thread1of1ForFork1_#t~mem12|) (<= (+ |c_thread1Thread1of1ForFork0_#t~mem4| 1) |c_thread1Thread1of1ForFork0_#t~mem5|))) is different from false [2022-01-18 01:20:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:20:05,399 INFO L93 Difference]: Finished difference Result 19261 states and 53144 transitions. [2022-01-18 01:20:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 01:20:05,399 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 [2022-01-18 01:20:05,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:20:05,432 INFO L225 Difference]: With dead ends: 19261 [2022-01-18 01:20:05,433 INFO L226 Difference]: Without dead ends: 19261 [2022-01-18 01:20:05,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 323 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2472 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=650, Invalid=7911, Unknown=3, NotChecked=366, Total=8930 [2022-01-18 01:20:05,434 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 567 mSDsluCounter, 4585 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 4951 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 658 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:20:05,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 4951 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1284 Invalid, 0 Unknown, 658 Unchecked, 0.6s Time] [2022-01-18 01:20:05,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19261 states. [2022-01-18 01:20:05,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19261 to 12836. [2022-01-18 01:20:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12836 states, 12835 states have (on average 2.781145305804441) internal successors, (35696), 12835 states have internal predecessors, (35696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:20:05,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12836 states to 12836 states and 35696 transitions. [2022-01-18 01:20:05,651 INFO L78 Accepts]: Start accepts. Automaton has 12836 states and 35696 transitions. Word has length 181 [2022-01-18 01:20:05,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:20:05,651 INFO L470 AbstractCegarLoop]: Abstraction has 12836 states and 35696 transitions. [2022-01-18 01:20:05,651 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) [2022-01-18 01:20:05,652 INFO L276 IsEmpty]: Start isEmpty. Operand 12836 states and 35696 transitions. [2022-01-18 01:20:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:20:05,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:20:05,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:20:05,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 01:20:05,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:20:05,870 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:20:05,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:20:05,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1633556068, now seen corresponding path program 5 times [2022-01-18 01:20:05,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:20:05,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316865101] [2022-01-18 01:20:05,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:20:05,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:20:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:20:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:20:06,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:20:06,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316865101] [2022-01-18 01:20:06,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316865101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:20:06,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:20:06,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 01:20:06,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627994866] [2022-01-18 01:20:06,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:20:06,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 01:20:06,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:20:06,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 01:20:06,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-01-18 01:20:06,104 INFO L87 Difference]: Start difference. First operand 12836 states and 35696 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) [2022-01-18 01:20:06,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:20:06,673 INFO L93 Difference]: Finished difference Result 19613 states and 54398 transitions. [2022-01-18 01:20:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 01:20:06,673 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 [2022-01-18 01:20:06,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:20:06,704 INFO L225 Difference]: With dead ends: 19613 [2022-01-18 01:20:06,704 INFO L226 Difference]: Without dead ends: 19613 [2022-01-18 01:20:06,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=264, Invalid=858, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 01:20:06,704 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 1452 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:20:06,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1452 Valid, 3079 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:20:06,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19613 states. [2022-01-18 01:20:06,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19613 to 12844. [2022-01-18 01:20:06,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12844 states, 12843 states have (on average 2.7814373588725374) internal successors, (35722), 12843 states have internal predecessors, (35722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:20:06,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12844 states to 12844 states and 35722 transitions. [2022-01-18 01:20:06,916 INFO L78 Accepts]: Start accepts. Automaton has 12844 states and 35722 transitions. Word has length 181 [2022-01-18 01:20:06,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:20:06,916 INFO L470 AbstractCegarLoop]: Abstraction has 12844 states and 35722 transitions. [2022-01-18 01:20:06,916 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) [2022-01-18 01:20:06,916 INFO L276 IsEmpty]: Start isEmpty. Operand 12844 states and 35722 transitions. [2022-01-18 01:20:06,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:20:06,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:20:06,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:20:06,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-01-18 01:20:06,933 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:20:06,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:20:06,934 INFO L85 PathProgramCache]: Analyzing trace with hash -538103460, now seen corresponding path program 8 times [2022-01-18 01:20:06,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:20:06,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157942457] [2022-01-18 01:20:06,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:20:06,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:20:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:20:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:20:07,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:20:07,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157942457] [2022-01-18 01:20:07,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157942457] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:20:07,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548590348] [2022-01-18 01:20:07,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:20:07,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:20:07,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:20:07,597 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) [2022-01-18 01:20:07,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 01:20:07,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-18 01:20:07,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:20:07,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-18 01:20:07,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:20:08,781 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:20:08,782 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 [2022-01-18 01:20:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:20:08,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 01:20:08,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548590348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:20:08,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 01:20:08,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [28] total 47 [2022-01-18 01:20:08,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166777021] [2022-01-18 01:20:08,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:20:08,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 01:20:08,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:20:08,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 01:20:08,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=1957, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 01:20:08,838 INFO L87 Difference]: Start difference. First operand 12844 states and 35722 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) [2022-01-18 01:20:10,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:20:10,109 INFO L93 Difference]: Finished difference Result 20103 states and 55769 transitions. [2022-01-18 01:20:10,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 01:20:10,109 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 [2022-01-18 01:20:10,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:20:10,140 INFO L225 Difference]: With dead ends: 20103 [2022-01-18 01:20:10,140 INFO L226 Difference]: Without dead ends: 20103 [2022-01-18 01:20:10,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1308 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=754, Invalid=5252, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 01:20:10,141 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 1100 mSDsluCounter, 4261 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 4580 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 456 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:20:10,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 4580 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1026 Invalid, 0 Unknown, 456 Unchecked, 0.4s Time] [2022-01-18 01:20:10,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20103 states. [2022-01-18 01:20:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20103 to 12845. [2022-01-18 01:20:10,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12845 states, 12844 states have (on average 2.7814543755839303) internal successors, (35725), 12844 states have internal predecessors, (35725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:20:10,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12845 states to 12845 states and 35725 transitions. [2022-01-18 01:20:10,400 INFO L78 Accepts]: Start accepts. Automaton has 12845 states and 35725 transitions. Word has length 181 [2022-01-18 01:20:10,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:20:10,400 INFO L470 AbstractCegarLoop]: Abstraction has 12845 states and 35725 transitions. [2022-01-18 01:20:10,400 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) [2022-01-18 01:20:10,400 INFO L276 IsEmpty]: Start isEmpty. Operand 12845 states and 35725 transitions. [2022-01-18 01:20:10,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:20:10,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:20:10,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:20:10,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-18 01:20:10,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:20:10,617 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:20:10,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:20:10,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1942462158, now seen corresponding path program 6 times [2022-01-18 01:20:10,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:20:10,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854594783] [2022-01-18 01:20:10,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:20:10,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:20:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:20:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:20:10,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:20:10,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854594783] [2022-01-18 01:20:10,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854594783] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:20:10,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:20:10,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 01:20:10,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115533944] [2022-01-18 01:20:10,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:20:10,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 01:20:10,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:20:10,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 01:20:10,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-01-18 01:20:10,842 INFO L87 Difference]: Start difference. First operand 12845 states and 35725 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) [2022-01-18 01:20:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:20:11,350 INFO L93 Difference]: Finished difference Result 19573 states and 54279 transitions. [2022-01-18 01:20:11,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 01:20:11,350 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 [2022-01-18 01:20:11,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:20:11,380 INFO L225 Difference]: With dead ends: 19573 [2022-01-18 01:20:11,380 INFO L226 Difference]: Without dead ends: 19573 [2022-01-18 01:20:11,381 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 [2022-01-18 01:20:11,381 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 1084 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:20:11,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 2894 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:20:11,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19573 states. [2022-01-18 01:20:11,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19573 to 12849. [2022-01-18 01:20:11,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12849 states, 12848 states have (on average 2.7820672478206725) internal successors, (35744), 12848 states have internal predecessors, (35744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:20:11,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12849 states to 12849 states and 35744 transitions. [2022-01-18 01:20:11,584 INFO L78 Accepts]: Start accepts. Automaton has 12849 states and 35744 transitions. Word has length 181 [2022-01-18 01:20:11,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:20:11,584 INFO L470 AbstractCegarLoop]: Abstraction has 12849 states and 35744 transitions. [2022-01-18 01:20:11,584 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) [2022-01-18 01:20:11,584 INFO L276 IsEmpty]: Start isEmpty. Operand 12849 states and 35744 transitions. [2022-01-18 01:20:11,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:20:11,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:20:11,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:20:11,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2022-01-18 01:20:11,600 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:20:11,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:20:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1419700880, now seen corresponding path program 9 times [2022-01-18 01:20:11,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:20:11,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250635174] [2022-01-18 01:20:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:20:11,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:20:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:20:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:20:12,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:20:12,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250635174] [2022-01-18 01:20:12,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250635174] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:20:12,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026038499] [2022-01-18 01:20:12,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:20:12,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:20:12,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:20:12,765 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) [2022-01-18 01:20:12,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 01:20:13,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-18 01:20:13,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:20:13,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2022-01-18 01:20:13,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:20:13,961 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:20:13,962 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 [2022-01-18 01:20:14,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:20:14,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 01:20:14,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026038499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:20:14,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 01:20:14,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [37] total 55 [2022-01-18 01:20:14,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346657359] [2022-01-18 01:20:14,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:20:14,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 01:20:14,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:20:14,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 01:20:14,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=2701, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 01:20:14,072 INFO L87 Difference]: Start difference. First operand 12849 states and 35744 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) [2022-01-18 01:20:15,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:20:15,394 INFO L93 Difference]: Finished difference Result 19931 states and 55245 transitions. [2022-01-18 01:20:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 01:20:15,394 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 [2022-01-18 01:20:15,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:20:15,424 INFO L225 Difference]: With dead ends: 19931 [2022-01-18 01:20:15,424 INFO L226 Difference]: Without dead ends: 19931 [2022-01-18 01:20:15,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1875 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=708, Invalid=5612, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 01:20:15,425 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 1405 mSDsluCounter, 4124 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1405 SdHoareTripleChecker+Valid, 4422 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:20:15,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1405 Valid, 4422 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1381 Invalid, 0 Unknown, 153 Unchecked, 0.6s Time] [2022-01-18 01:20:15,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19931 states. [2022-01-18 01:20:15,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19931 to 12850. [2022-01-18 01:20:15,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12850 states, 12849 states have (on average 2.7821620359561057) internal successors, (35748), 12849 states have internal predecessors, (35748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:20:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12850 states to 12850 states and 35748 transitions. [2022-01-18 01:20:15,627 INFO L78 Accepts]: Start accepts. Automaton has 12850 states and 35748 transitions. Word has length 181 [2022-01-18 01:20:15,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:20:15,627 INFO L470 AbstractCegarLoop]: Abstraction has 12850 states and 35748 transitions. [2022-01-18 01:20:15,627 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) [2022-01-18 01:20:15,627 INFO L276 IsEmpty]: Start isEmpty. Operand 12850 states and 35748 transitions. [2022-01-18 01:20:15,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:20:15,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:20:15,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:20:15,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-01-18 01:20:15,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable276 [2022-01-18 01:20:15,845 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:20:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:20:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1804040840, now seen corresponding path program 7 times [2022-01-18 01:20:15,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:20:15,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724871492] [2022-01-18 01:20:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:20:15,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:20:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:20:16,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:20:16,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:20:16,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724871492] [2022-01-18 01:20:16,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724871492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:20:16,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:20:16,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 01:20:16,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943429973] [2022-01-18 01:20:16,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:20:16,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 01:20:16,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:20:16,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 01:20:16,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-01-18 01:20:16,071 INFO L87 Difference]: Start difference. First operand 12850 states and 35748 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) [2022-01-18 01:20:16,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:20:16,560 INFO L93 Difference]: Finished difference Result 19425 states and 53881 transitions. [2022-01-18 01:20:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 01:20:16,561 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 [2022-01-18 01:20:16,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:20:16,590 INFO L225 Difference]: With dead ends: 19425 [2022-01-18 01:20:16,590 INFO L226 Difference]: Without dead ends: 19425 [2022-01-18 01:20:16,591 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 [2022-01-18 01:20:16,591 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 1263 mSDsluCounter, 2279 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 01:20:16,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 2532 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 01:20:16,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19425 states. [2022-01-18 01:20:16,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19425 to 12843. [2022-01-18 01:20:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12843 states, 12842 states have (on average 2.7814203395109796) internal successors, (35719), 12842 states have internal predecessors, (35719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:20:16,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12843 states to 12843 states and 35719 transitions. [2022-01-18 01:20:16,794 INFO L78 Accepts]: Start accepts. Automaton has 12843 states and 35719 transitions. Word has length 181 [2022-01-18 01:20:16,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:20:16,794 INFO L470 AbstractCegarLoop]: Abstraction has 12843 states and 35719 transitions. [2022-01-18 01:20:16,794 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) [2022-01-18 01:20:16,794 INFO L276 IsEmpty]: Start isEmpty. Operand 12843 states and 35719 transitions. [2022-01-18 01:20:16,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:20:16,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:20:16,811 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, 1, 1, 1, 1] [2022-01-18 01:20:16,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2022-01-18 01:20:16,811 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:20:16,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:20:16,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1889943514, now seen corresponding path program 10 times [2022-01-18 01:20:16,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:20:16,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603191590] [2022-01-18 01:20:16,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:20:16,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:20:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:20:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:20:17,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:20:17,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603191590] [2022-01-18 01:20:17,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603191590] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:20:17,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082875223] [2022-01-18 01:20:17,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:20:17,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:20:17,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:20:17,806 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) [2022-01-18 01:20:17,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 01:20:18,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:20:18,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:20:18,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-18 01:20:18,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:20:18,568 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 [2022-01-18 01:20:18,706 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 [2022-01-18 01:20:18,796 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 [2022-01-18 01:20:19,325 INFO L353 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-01-18 01:20:19,325 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 [2022-01-18 01:20:19,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 01:20:19,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:20:20,199 WARN L838 $PredicateComparison]: unable to prove that (forall ((~get1~0.base Int) (v_ArrVal_5379 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5379))) (let ((.cse4 (select .cse7 c_~get2~0.base)) (.cse5 (select .cse7 ~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 [2022-01-18 01:20:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:20:20,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082875223] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 01:20:20,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 01:20:20,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [30, 29] total 68 [2022-01-18 01:20:20,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817437707] [2022-01-18 01:20:20,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:20:20,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 01:20:20,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:20:20,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 01:20:20,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=4072, Unknown=1, NotChecked=130, Total=4556 [2022-01-18 01:20:20,331 INFO L87 Difference]: Start difference. First operand 12843 states and 35719 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) [2022-01-18 01:20:23,819 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((~get1~0.base Int) (v_ArrVal_5379 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_5379))) (let ((.cse4 (select .cse7 c_~get2~0.base)) (.cse5 (select .cse7 ~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)))))) (or (< |c_thread2Thread1of1ForFork1_#t~mem11| |c_thread2Thread1of1ForFork1_#t~mem12|) (<= (+ |c_thread1Thread1of1ForFork0_#t~mem4| 1) |c_thread1Thread1of1ForFork0_#t~mem5|))) is different from false [2022-01-18 01:20:24,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:20:24,581 INFO L93 Difference]: Finished difference Result 17155 states and 47601 transitions. [2022-01-18 01:20:24,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 01:20:24,581 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 [2022-01-18 01:20:24,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:20:24,607 INFO L225 Difference]: With dead ends: 17155 [2022-01-18 01:20:24,608 INFO L226 Difference]: Without dead ends: 17155 [2022-01-18 01:20:24,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 325 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2476 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=545, Invalid=6598, Unknown=5, NotChecked=334, Total=7482 [2022-01-18 01:20:24,608 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 494 mSDsluCounter, 3878 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 4237 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 643 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:20:24,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 4237 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1037 Invalid, 0 Unknown, 643 Unchecked, 0.5s Time] [2022-01-18 01:20:24,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17155 states. [2022-01-18 01:20:24,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17155 to 12860. [2022-01-18 01:20:24,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12860 states, 12859 states have (on average 2.7811649428415897) internal successors, (35763), 12859 states have internal predecessors, (35763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:20:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12860 states to 12860 states and 35763 transitions. [2022-01-18 01:20:24,797 INFO L78 Accepts]: Start accepts. Automaton has 12860 states and 35763 transitions. Word has length 181 [2022-01-18 01:20:24,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:20:24,797 INFO L470 AbstractCegarLoop]: Abstraction has 12860 states and 35763 transitions. [2022-01-18 01:20:24,797 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) [2022-01-18 01:20:24,797 INFO L276 IsEmpty]: Start isEmpty. Operand 12860 states and 35763 transitions. [2022-01-18 01:20:24,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:20:24,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:20:24,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:20:24,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-01-18 01:20:25,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable278 [2022-01-18 01:20:25,013 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:20:25,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:20:25,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1971221562, now seen corresponding path program 8 times [2022-01-18 01:20:25,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:20:25,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116268555] [2022-01-18 01:20:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:20:25,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:20:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:20:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 01:20:25,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:20:25,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116268555] [2022-01-18 01:20:25,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116268555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:20:25,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:20:25,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-01-18 01:20:25,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860940406] [2022-01-18 01:20:25,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:20:25,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 01:20:25,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:20:25,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 01:20:25,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-01-18 01:20:25,279 INFO L87 Difference]: Start difference. First operand 12860 states and 35763 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) [2022-01-18 01:20:25,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:20:25,817 INFO L93 Difference]: Finished difference Result 19564 states and 54204 transitions. [2022-01-18 01:20:25,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 01:20:25,817 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 [2022-01-18 01:20:25,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:20:25,847 INFO L225 Difference]: With dead ends: 19564 [2022-01-18 01:20:25,847 INFO L226 Difference]: Without dead ends: 19564 [2022-01-18 01:20:25,847 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 [2022-01-18 01:20:25,847 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 1493 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:20:25,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 2926 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 01:20:25,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19564 states. [2022-01-18 01:20:26,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19564 to 12925. [2022-01-18 01:20:26,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12925 states, 12924 states have (on average 2.7807954193748063) internal successors, (35939), 12924 states have internal predecessors, (35939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 01:20:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12925 states to 12925 states and 35939 transitions. [2022-01-18 01:20:26,048 INFO L78 Accepts]: Start accepts. Automaton has 12925 states and 35939 transitions. Word has length 181 [2022-01-18 01:20:26,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:20:26,048 INFO L470 AbstractCegarLoop]: Abstraction has 12925 states and 35939 transitions. [2022-01-18 01:20:26,048 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) [2022-01-18 01:20:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 12925 states and 35939 transitions. [2022-01-18 01:20:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-18 01:20:26,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:20:26,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:20:26,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-01-18 01:20:26,065 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:20:26,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:20:26,065 INFO L85 PathProgramCache]: Analyzing trace with hash -213626536, now seen corresponding path program 11 times [2022-01-18 01:20:26,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:20:26,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066873967] [2022-01-18 01:20:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:20:26,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:20:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:20:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:20:26,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:20:26,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066873967] [2022-01-18 01:20:26,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066873967] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:20:26,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848190244] [2022-01-18 01:20:26,691 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:20:26,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:20:26,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:20:26,692 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) [2022-01-18 01:20:26,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 01:20:26,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:20:26,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:20:26,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 70 conjunts are in the unsatisfiable core [2022-01-18 01:20:26,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:20:26,971 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 [2022-01-18 01:20:27,097 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-01-18 01:20:27,098 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 [2022-01-18 01:20:27,414 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:20:27,414 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 [2022-01-18 01:20:27,537 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 [2022-01-18 01:20:27,708 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 [2022-01-18 01:20:27,816 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 [2022-01-18 01:20:28,493 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 01:20:28,493 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 [2022-01-18 01:20:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:20:28,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-01-18 01:20:41,213 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 01:20:41,213 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 01:20:41,690 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 01:20:41,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-01-18 01:20:41,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:20:41,891 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 182 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 64 known predicates. [2022-01-18 01:20:41,892 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 01:20:41,892 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 01:20:41,895 INFO L732 BasicCegarLoop]: Path program histogram: [66, 61, 50, 40, 11, 8, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:20:41,896 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 01:20:41,896 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 01:20:41,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 01:20:41 BasicIcfg [2022-01-18 01:20:41,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 01:20:41,898 INFO L158 Benchmark]: Toolchain (without parser) took 719827.15ms. Allocated memory was 369.1MB in the beginning and 3.6GB in the end (delta: 3.2GB). Free memory was 314.8MB in the beginning and 2.2GB in the end (delta: -1.9GB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. [2022-01-18 01:20:41,898 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 369.1MB. Free memory is still 332.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 01:20:41,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.05ms. Allocated memory was 369.1MB in the beginning and 494.9MB in the end (delta: 125.8MB). Free memory was 314.7MB in the beginning and 466.3MB in the end (delta: -151.6MB). Peak memory consumption was 4.4MB. Max. memory is 16.0GB. [2022-01-18 01:20:41,898 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.22ms. Allocated memory is still 494.9MB. Free memory was 466.3MB in the beginning and 464.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 01:20:41,898 INFO L158 Benchmark]: Boogie Preprocessor took 46.71ms. Allocated memory is still 494.9MB. Free memory was 464.2MB in the beginning and 462.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 01:20:41,898 INFO L158 Benchmark]: RCFGBuilder took 504.62ms. Allocated memory is still 494.9MB. Free memory was 462.1MB in the beginning and 443.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-18 01:20:41,898 INFO L158 Benchmark]: TraceAbstraction took 718995.64ms. Allocated memory was 494.9MB in the beginning and 3.6GB in the end (delta: 3.1GB). Free memory was 442.2MB in the beginning and 2.2GB in the end (delta: -1.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. [2022-01-18 01:20:41,899 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 369.1MB. Free memory is still 332.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 224.05ms. Allocated memory was 369.1MB in the beginning and 494.9MB in the end (delta: 125.8MB). Free memory was 314.7MB in the beginning and 466.3MB in the end (delta: -151.6MB). Peak memory consumption was 4.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.22ms. Allocated memory is still 494.9MB. Free memory was 466.3MB in the beginning and 464.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 46.71ms. Allocated memory is still 494.9MB. Free memory was 464.2MB in the beginning and 462.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 504.62ms. Allocated memory is still 494.9MB. Free memory was 462.1MB in the beginning and 443.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 718995.64ms. Allocated memory was 494.9MB in the beginning and 3.6GB in the end (delta: 3.1GB). Free memory was 442.2MB in the beginning and 2.2GB in the end (delta: -1.7GB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. * 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 TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 64 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 TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 64 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 TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 64 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: 718.9s, OverallIterations: 281, TraceHistogramMax: 2, PathProgramHistogramMax: 66, EmptinessCheckTime: 5.7s, AutomataDifference: 343.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 330852 SdHoareTripleChecker+Valid, 109.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 330852 mSDsluCounter, 1041587 SdHoareTripleChecker+Invalid, 90.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 32282 IncrementalHoareTripleChecker+Unchecked, 962134 mSDsCounter, 5488 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 282861 IncrementalHoareTripleChecker+Invalid, 320631 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5488 mSolverCounterUnsat, 101876 mSDtfsCounter, 282861 mSolverCounterSat, 1.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28978 GetRequests, 16694 SyntacticMatches, 163 SemanticMatches, 12121 ConstructedPredicates, 24 IntricatePredicates, 21 DeprecatedPredicates, 152715 ImplicationChecksByTransitivity, 268.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18604occurred in iteration=202, InterpolantAutomatonStates: 7240, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 79.5s AutomataMinimizationTime, 280 MinimizatonAttempts, 2773160 StatesRemovedByMinimization, 276 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 250.1s InterpolantComputationTime, 57781 NumberOfCodeBlocks, 57534 NumberOfCodeBlocksAsserted, 355 NumberOfCheckSat, 65116 ConstructedInterpolants, 781 QuantifiedInterpolants, 388834 SizeOfPredicates, 1266 NumberOfNonLiveVariables, 18358 ConjunctsInSsa, 2519 ConjunctsInUnsatCore, 376 InterpolantComputations, 246 PerfectInterpolantSequences, 804/1008 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